#2 Air. Who wants to vent?

Episode 2 gives the listener an overview of what an air vent is, and what is it not. It explains how air vents are different from air separators and where air vents are installed. Caleffi's wide variety of air vent product families are introduced and their unique features and benefits are covered.

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Transcript

[Music]

00:04

welcome to ask Caleffi

00:06

the podcast that dives into real-life

00:09

problems that plumbing and hvac

00:11

technicians face in the field we're your

00:13

hosts from the caleffi tech support team

00:15

i'm greg tubbs and i'm dan ferkus

00:17

welcome

00:18

we look forward to sharing some stories

00:20

from our tech calls and using our

00:21

background and expertise

00:23

to make your days a little easier

00:26

[Music]

00:29

and here we are coming at you from

00:31

our headquarters here in

00:32

milwaukee wisconsin

00:34

how you doing dan good episode two i'm

00:36

excited yeah

00:37

what are we talking about today well

00:39

today we're gonna talk about air vents

00:40

wonderful so i got a question okay

00:44

what is the purpose of an air vent well

00:46

greg an air vent is designed to remove

00:48

air bubbles either manually or

00:50

automatically from your hydronic system

00:53

i got a question for you what do you got

00:55

air is good for humans what's it not

00:56

good for well it's definitely not good

00:59

for hydronic

01:00

heating and cooling systems at all

01:02

that's a fact

01:04

yeah i mean you get a little air in that

01:05

system if you don't have your fluid

01:08

quality set up right it can really wreak

01:10

some havoc on it it sure can

01:12

yeah air is air in a hydronic system is

01:15

not a good thing

01:16

no not at all i got a fun fact for you

01:19

greg

01:19

what's that did you know that caleffi is

01:22

the world's largest manufacturer of air

01:24

vents

01:25

you know i often wondered who was the

01:28

largest manufacturer

01:29

i maybe i took it for granted that i

01:31

work here and didn't realize

01:33

that we are the largest manufacturer in

01:35

the world

01:36

it was interesting i see a lot of air

01:38

vents in our warehouse i see a lot of

01:40

air vents leave our warehouse

01:41

take a lot of tech calls on their events

01:44

and applications for them

01:46

but didn't realize that you know what

01:48

worldwide i mean this is

01:50

we represent north american canada

01:52

worldwide

01:53

largest manufacturer that's crazy yeah

01:56

sure is yeah i mean air vents are

01:59

they're easy to recognize aren't they

02:02

they're they're a single port device um

02:06

one pipe connection um compared to an

02:08

air separator which is a

02:10

two port device it's a multi-pass device

02:13

that incorporates

02:15

not just an air vent but a coalescing

02:17

mesh big difference between the two

02:19

big difference between the two similar

02:21

end result

02:22

air removal air removal you know you're

02:24

right i mean air vent

02:25

you know single location where

02:29

that air separator is a multi-pass

02:30

device so

02:32

you know today i think it's great we're

02:33

talking about air vents i know we're

02:34

gonna come back at a later date

02:36

and talk about separators and we will

02:38

guaranteed we will

02:40

so we have a lot of different products

02:44

to remove air sure do when we're talking

02:47

air vents

02:48

absolutely they all kind of work the

02:49

same though yeah the end result is the

02:52

same

02:52

we're removing air from the system but

02:56

in location too i mean for the most part

02:58

you're locating an air vent

02:59

in a similar location no matter if it's

03:01

a manual

03:02

or an automatic yeah actually you may

03:05

locate it anywhere in a system

03:07

you'll see them at the top of boilers

03:08

you'll see them on the top of tanks

03:10

um you know a high point and a riser

03:14

sure sure and they're all i mean the

03:17

automatics

03:18

really consist of a handful of parts

03:20

when you look at it if you you cut it in

03:22

half and look at it

03:23

you got a body you got a float with a

03:26

mechanism

03:28

and a needle valve that vents allows

03:31

that that air to vent out

03:32

right at the discharge port right so

03:37

let's talk about the types of products

03:39

or the products that we have available

03:41

for

03:42

air vents yeah boy you look in our 2020

03:44

catalog

03:45

we're coming to 2021 soon and we've got

03:48

pages of air vents

03:50

there's a lot of different products a

03:52

lot of different features a lot of

03:53

different specifications so yeah i think

03:55

it's great we'll just take some time and

03:56

walk through each one of the models and

03:58

you know try to provide some some

04:00

information on them

04:01

sure well might as well start out with

04:04

the good old reliable manual air vent

04:05

yeah start simple yeah the 337 i mean

04:08

it's a sweet little vent

04:09

typically we see them located on

04:12

radiators uh

04:14

ends of baseboards panel radiators

04:17

handle rads

04:18

um i've even had guys call in and say

04:21

yeah we love this vent for

04:22

uh fan coils right yeah i've seen them

04:25

on fan coils i've seen them on i've

04:28

actually

04:28

even seen them at the end of manifolds

04:30

sure makes sense

04:32

yeah i mean it's a nice little manual

04:33

vent so you know manual being the key

04:35

word

04:36

manual vent means you're manually

04:39

opening it

04:40

it's not automatic right you grab hold

04:42

the knob give it a turn

04:44

and have your cup ready but what's nice

04:46

about that 337 valve

04:49

is you can squeeze a little piece of

04:50

hose on the end of that thing

04:52

right that sure is nice have you ever

04:54

been tucked in a corner on a cast iron

04:56

baseboard

04:57

with an old air vent that just has a

04:59

little hole in it to let the air out

05:01

yeah you're trying to trying to catch

05:03

that that water as it comes shooting out

05:05

and it may

05:05

come dribbling out or it may come

05:08

shooting out you never know they come

05:09

spitting out in little spurts

05:11

right that that and you know you know

05:14

that water is never very clean

05:16

never clean and it never fails they have

05:18

white carpeting yeah white carpet or a

05:20

white wall next to it and you're

05:22

tucked in the corner with a rag and a

05:24

and a boiler valve key just trying to

05:26

trying to get that air purged out and

05:28

get that radiator to

05:30

to heat up yeah so this is a really nice

05:35

manual air vent for that yeah that's

05:36

really that you you hit it right there

05:39

that having that little

05:40

tab on it where you can connect the hose

05:42

and run down to a cup

05:43

really can can make your life a lot

05:45

easier absolutely

05:47

so we go from there to our 50 80. yeah

05:50

the hydrocal

05:51

yeah that's an interesting little

05:53

product and we do get some

05:54

confused guys they call in they

05:57

we advertise it as is an automatic but a

06:00

manual

06:01

right so which is it first it's kind of

06:03

like a hybrid the chicken

06:04

or the egg oh it's like a hybrid yeah

06:07

it is a hybrid so what can you tell us

06:11

about that

06:12

well it's nice because it it's exactly

06:14

that it's an auto

06:16

air vent and it's a manual air vent sure

06:18

the automatic side of it

06:20

has hygroscopic discs in it and

06:22

hydroscopic discs are a little waver

06:24

wafer that allow air to permeate through

06:27

the disc

06:28

so it gives you that automatic air

06:30

venting but then the minute they come in

06:32

contact with water they'll swell up in

06:34

matter of

06:35

seconds i think it's like two seconds

06:37

they swear up swell up to

06:38

50 percent larger than their original

06:40

size and that'll close off that port and

06:42

prevent

06:43

water from leaking that's pretty cool

06:45

and there's a stack of these in there

06:47

there's probably

06:48

15 20 of them maybe more right yeah and

06:50

then

06:51

what's nice about that too is that if

06:53

that disc is swelled up

06:54

and you're out there doing service you

06:57

can open them and put them into a manual

06:59

mode and manually bleed

07:01

sure and that's just by screwing that

07:03

valve in and that depresses the little

07:05

check valve that's in there yeah once

07:07

those discs well up greg will that thing

07:09

ever work again

07:11

it will work again but it may take some

07:13

time

07:14

so we do get that question a lot too

07:17

hey how long does it take for these

07:20

wafers to dry up for this thing to vent

07:23

air automatically again

07:24

yep i had that question a lot what's the

07:27

answer you give them

07:28

um well it kind of depends on your

07:31

system

07:32

i mean it's interesting because i've

07:33

often wondered that myself you know hey

07:35

you know they swell up they react within

07:38

seconds they close

07:39

the flow of water and air off but you

07:42

know what depending on your system

07:43

temperature

07:45

that kind of determines how long it's

07:47

going to take for that to dry out and go

07:49

back into service what was interesting

07:50

is when i looked at it

07:52

you know a low temperature system you

07:54

know say 140 degree water

07:56

you know you're going to be two and a

07:57

half hours for that to dry out

08:00

and go back into service wow so then

08:03

say it's a baseboard system or a cast

08:07

iron radiator system where they're

08:08

sending

08:09

we'll say 180 degree water at it yeah it

08:11

was interesting at 180 degrees it'll

08:13

it'll go back into service in an hour

08:15

wow so the warmer the water the quicker

08:18

it'll evaporate

08:19

and allow those discs to shrink back

08:21

down and get you back into purging air

08:24

automatically exactly you know but the

08:27

one thing with those discs is that they

08:28

don't last forever

08:29

no no they don't uh i think it's a three

08:33

year life span

08:34

really is all they have you know and

08:37

which makes sense because

08:38

if you have that thing set in automatic

08:40

mode and it's constantly

08:41

trying to vent and then it makes those

08:44

those discs swell then they

08:45

then they shrink back down again after

08:48

drying out

08:48

it's a lot of cycles of yeah over time

08:51

they'll degrade

08:52

yeah yeah or they'll get debris in them

08:54

yeah it's nice though we sell that

08:55

replacement cartridge

08:57

um it's just a a simple replacement

08:59

cartridge with new hydroscopic

09:01

discs in it that allows you to go out

09:03

and you remove the cartridge

09:05

and you install the new one and you're

09:06

back in service sure

09:09

but what's the one benefit with our

09:10

system it's easy to change that

09:12

cartridge

09:13

yeah the fact that we have a check valve

09:16

in there

09:16

that's what's making this so much easier

09:18

to take care of

09:20

within seconds you can unscrew that that

09:22

cartridge that needs to be replaced

09:24

thread in the new one no leaks no worry

09:27

you don't have to depressurize the

09:28

system and worry about fighting all that

09:30

air back out and charging the customer a

09:32

ton of money to

09:33

sit and purge air out for just a little

09:35

leak event or

09:37

or event that just needs service right

09:39

yeah i mean that check valve really

09:40

saves you

09:41

i mean we've both been in a position

09:43

where we've been out and

09:44

now maybe you have a manual air vent and

09:46

the thing's been painted four

09:47

times or the or the

09:51

threads are stripped out and now you're

09:53

stuck not being able to close that vent

09:55

off

09:56

right so you need to replace it and it's

09:58

in a radiator with no check valve

10:00

so you're draining the system to change

10:02

this three dollar airbend

10:04

right yeah it's it's a huge benefit

10:07

i think for the service service

10:09

technician so

10:11

from the manual vents we've got a ton of

10:13

automatic vents

10:15

yeah but our base model is the robo kill

10:18

yeah robocal is an interesting vent i

10:20

mean that fan

10:21

you know any of our air vents and any

10:24

air vent on the market is going to have

10:25

a venting capacity

10:27

and that you know the venting capacity

10:28

is how much air it will vent and it's

10:30

it's rated an scfm sure scfm

10:34

so what is scfm what does that mean for

10:37

guys who go

10:38

i don't even know what that is it's your

10:40

standard cubic feet per minute of air

10:42

removal

10:42

okay so it's it's the venting capacity

10:45

right right

10:46

yeah the higher the scfm the higher the

10:48

venting capacity of that auto air vent

10:50

sure so you look at the robocal again

10:52

interesting product it's rated at 1.75

10:55

scfm so it has good air removal capacity

11:00

it's a sealed economical not serviceable

11:03

device

11:03

so that product is is designed and built

11:06

at a price point where

11:08

you know it's robust it's going to do a

11:10

great job of of venting air

11:12

it's going to be reliable but at the

11:14

point where maybe some debris gets stuck

11:16

into it

11:17

you're not going to pull it apart and

11:18

service it it's going to be replaceable

11:20

yeah cool fact about that

11:23

particular air vent did you know that it

11:26

is manufactured from start to finish so

11:28

right

11:29

right from bar stock all the way to

11:32

the manufacturing process of it the

11:34

testing and the packaging

11:37

it's never touched by human hands it's

11:38

all done by robots that was pretty

11:40

amazing i didn't know

11:42

that until we started putting together

11:44

our our talking points it was pretty

11:46

interesting to learn that it was 100

11:48

percent built by robots

11:49

um you think about that i mean you have

11:52

an internal float

11:53

and linkage and components there's a

11:55

spring in there

11:57

that all need to be installed and it's

11:58

not never touched by human hands

12:00

yeah it's pretty crazy what's the

12:03

probably one of the biggest questions or

12:04

most

12:05

asked questions you get about that

12:07

product i probably get asked most about

12:09

that

12:10

plug on the side there's a plug with a

12:12

an allen wrench

12:13

opening on the side and i get the

12:16

question quite a bit you know okay

12:17

can i open that up and use that as a

12:19

venting port to do a

12:21

side discharge yeah i recall getting

12:25

that question quite a bit when i first

12:26

started here

12:27

yeah that and i always tell the guys

12:29

don't remove the plug it's part of the

12:31

manufacturing process again being built

12:33

by robots and machines

12:35

you know they need an access point to

12:37

access that body for

12:39

for production also has the spring

12:43

behind it yeah so removing that is going

12:45

to cause some issues with the

12:47

ability to vent right and that spring is

12:50

actually tied to the top of the float

12:52

and that's what allows that float to

12:53

ride up and down

12:55

so whatever you do don't remove the

12:58

black plug

12:58

right right that's not inside discharge

13:00

part that's part of the manufacturing

13:02

process

13:03

cool so from from the robocal

13:07

which is a real nice economical air vent

13:09

we go to some of our

13:12

more high-end type air vents more robust

13:14

a little more robust more serviceable

13:16

in the mini cal and the valcal right

13:19

yeah very similar construction between

13:21

the two

13:22

yeah the mini cal and valcal they are

13:26

a serviceable meaning you could actually

13:28

unthread the cover

13:30

that has the needle valve the linkage

13:33

and the float attached

13:34

to it and pull it out and if it were to

13:36

start leaking you could actually

13:38

run fluid by run fluid through it or air

13:41

if you wanted to to clean that guy out

13:43

get it and clean any debris out of the

13:45

needle

13:45

yes and clean out the body if need be if

13:49

there's a lot of debris

13:50

from fluid in into that body right you'd

13:53

be able to

13:53

remove remove that debris yeah yeah i

13:57

mean very serviceable and that cap's

13:58

easy to remove it seals with an o-ring

14:00

so it's not on there super tight

14:02

i mean you don't need a a ton of force

14:04

to tighten it down

14:05

that o-ring does the ceiling having that

14:08

float in there

14:10

when that float rises it'll create a

14:11

little air pocket above it

14:13

so you shouldn't have the water coming

14:15

in contact with the needle and it's when

14:18

you get debris

14:19

stuck in there that that water will rise

14:22

up above the float and it'll leak

14:24

right right because you're allowing a

14:25

place for that air to go if there is

14:27

debris stuck in the needle valve yeah

14:29

have you ever had any contractors call

14:30

you

14:31

asking you about manually bleeding those

14:33

i have

14:34

you know and yes you can do that but

14:38

typically if you have to manually

14:40

bleed it chances are it's already done

14:43

its job

14:44

if you're pushing it down you're getting

14:45

water right off the bat you just remove

14:47

that cushion of air

14:48

above it so then you got to worry about

14:50

debris also following

14:52

the water up right yeah you'll get a

14:54

piece of teflon tape or a chunk of

14:56

solder or

14:58

you lost rust or a wood chip or whatever

15:00

above that float and

15:02

it can plug you can hold that needle

15:04

valve open just to crack and allow water

15:06

to

15:07

to purge out of it but you know what it

15:09

like craig mentioned pull the cap off

15:10

clean it out put it back

15:12

in service uh very simple to to maintain

15:15

yeah what kind of uh flows can we expect

15:18

out of a valve like that

15:20

you know it's interesting so we we

15:22

talked about the mini cal and the val

15:24

cal yeah we lump those two together and

15:26

we only talked about

15:27

one design and construction and that's

15:29

really because they both share the same

15:31

design

15:31

in the same construction the difference

15:33

between the two is the mini cal

15:35

is going to be rated to the 1.75 cfm of

15:39

air removal that

15:40

we talked about with the robocal sure

15:42

but the valkal has a little bigger

15:44

body and a little bigger discharge

15:47

to where it'll remove up to 2.25

15:51

scfm of air so a little higher a little

15:53

higher capacity a little better air

15:54

removal

15:55

sure and that's probably going to be

15:56

better suited to you know

15:58

larger areas like maybe a boiler

16:02

right you know removing air from a

16:03

boiler quickly top of a storage tank top

16:05

of a storage tank or a larger riser sure

16:08

you know where the mini cal and maybe

16:11

the robocal would be more

16:12

suited for smaller risers manifold

16:16

manifolds

16:17

yep so that's that's where that product

16:19

comes into play

16:20

yeah and good news you know we talked

16:22

about the check valve in our

16:24

50 80 for for servicing uh we have

16:27

inline check valves

16:29

for both the valkeal and mini kale that

16:31

you can put into your piping and then as

16:33

you thread

16:35

that air vent into it it'll open it you

16:37

know i get got a question the other day

16:39

greg you probably had this

16:40

what's that little metal tab that sticks

16:42

out the bottom of the air vent for

16:44

we gotta we get that question quite

16:46

often actually between that and

16:48

in the black cap about the robocal

16:52

and that guy that that little steel tab

16:55

that's sticking out of the bottom of our

16:56

air vent

16:57

that's to depress the check valve that's

17:00

all it's there for

17:01

so don't take your tin snips and cut it

17:04

off

17:05

leave it on there right it's okay it's

17:07

supposed to be there

17:08

yeah that'll push that check valve open

17:10

when you screw it in and allow that

17:12

check weld to rise up and close when you

17:13

remove it

17:14

you know you you can also put a small

17:16

ball valve in below them too for

17:18

servicing

17:19

yeah that's that's another common

17:21

practice that some guys will do

17:22

is they'll put a ball valve instead of a

17:24

check valve if they have the room

17:26

but the check valve is nice it's very

17:28

compact and again

17:29

it's available for the robo the mini cal

17:32

and the velkal

17:34

any type of safety cap for those though

17:36

greg in fact uh there is there's a

17:38

couple of

17:39

varieties of safety cap i think probably

17:42

the most popular one being

17:44

sold is that that hygroscopic cap for

17:46

sure yeah

17:47

and with and it's got those those little

17:49

wafers in it similar to what's in the 50

17:51

80.

17:52

it's great for an installation where

17:54

maybe it's it's put in

17:56

in an area that you really don't want

17:58

water leaking say

18:00

buried buried in an unfinished area

18:03

above the finished ceiling or maybe in a

18:06

baseboard location yeah you know where

18:09

you you don't want you don't want to run

18:10

into a risk of that

18:12

you know some debris getting into that

18:14

that needle valve and causing that air

18:16

vent to leak

18:17

you got it i mean there's been nothing

18:19

worse than having

18:20

you know a manifold in a closet and all

18:23

the hardwood floor around it or

18:24

something and having that leak

18:26

right so that might go weeks or

18:28

[Music]

18:29

months without being noticed until it

18:31

causes a bigger problem yeah like a

18:33

swollen

18:34

wooden floor yeah you know what's nice

18:36

is those

18:37

same hydroscopic discs that we talked

18:39

about in the 50 80. so it's going to

18:41

swell within

18:42

seconds it's going to dry out within you

18:44

know

18:45

the amount of time it would based on

18:47

your water temperatures

18:48

and go right back into service will

18:50

require maintenance though

18:52

again like any hydroscopic disk about a

18:54

36 month life so

18:56

you know keep in mind if you're using

18:57

those caps a figure about every three

19:00

years you're going to want to replace

19:01

them

19:02

you got it so from there we're going to

19:04

go

19:05

to the discal air yeah the disco

19:08

discal air shares the discal name that

19:10

our separators carry

19:12

right uses similar construction on the

19:15

float

19:16

and assembly that our discal separator

19:18

uses

19:19

yeah that pinned float that pin float is

19:21

pretty neat because

19:22

it keeps the float centered in the body

19:25

and really allows a maximum amount of

19:27

air to

19:28

to flow around it and get out right

19:30

right yeah it keeps that floating

19:31

linkage

19:32

in the proper spot to get the most air

19:34

removal yeah

19:36

very efficient that way yeah i mean

19:37

those are rated up to 4.5

19:39

scfm sure and those have a half inch

19:42

female npt as of right now right uh

19:45

connection on the bottom of that

19:47

brass body yeah you know and we talked

19:49

about you know the serviceability of

19:50

being able to remove

19:52

the cap and clean the clean the pin and

19:55

and put it back in service but what's

19:57

another nice feature we have for that

19:58

great

19:59

yeah the discal air gives you the

20:02

ability

20:03

to buy some replacement service parts so

20:06

we actually sell

20:08

the cover and float if you don't want to

20:10

mess around with trying to clean out

20:12

the cover or you can't you just can't

20:14

seem to get that piece of debris out of

20:16

the needle valve we have that as a

20:18

replacement part

20:19

where you can just thread the old one

20:21

off and thread the new system on

20:24

and away you go right yep easy to

20:26

replace you could

20:27

you know take the old one and throw it

20:29

away or take it back clean it out and

20:31

put it back

20:31

as a service part for future used to

20:34

yeah and they're

20:34

they're universal and that will also

20:36

work with that hydroscopic safety cap

20:39

yes it does so from there we go to the

20:42

big dog

20:43

the maxcal yeah the max gal is the big

20:46

dog we see that on a lot of our

20:47

commercial products

20:48

we certainly do um very very serviceable

20:52

air vent um much larger capacity

20:56

we're looking at a huge brass body

20:58

three-quarter inch

20:59

female npt connection on the bottom and

21:02

then on the top

21:03

we've got a 3 8 thread

21:06

where you could put an adapter to go to

21:08

quarter inch quarter inch copper or a

21:11

quarter inch

21:11

quarter inch npt and what guys will do

21:15

is say this is put some place where they

21:17

want to be able to vent

21:19

but they're worried about water getting

21:21

out of it

21:22

they don't want it running all over that

21:23

nice new separator or they don't want it

21:25

running

21:25

someplace it shouldn't so then they're

21:27

able to

21:28

add that quarter inch npt by quarter

21:31

inch compression

21:32

brass fitting and go to copper and run

21:35

that copper down as a drain line to a

21:37

floor drain or some place

21:39

safe to drain drain fluid yeah to a

21:41

different venting location

21:44

you ever tear one of the inside of these

21:45

apart i have and it you know it's it's

21:47

a nice construction six bolt cap 7

21:50

16 nuts pull the cap off

21:54

there's an o-ring that seals the top but

21:57

inside there's a stainless steel ball

21:59

and linkage

22:00

yeah that's pretty cool yeah so it's

22:02

really a robust design

22:03

uh easy to get in and and clean it out

22:06

and then

22:07

you know the the air vent the float has

22:10

a sliding guide um

22:12

spring steel mechanism and actually has

22:14

a stainless steel

22:16

um the stainless steel ball and linkage

22:18

but then has a screen in it too

22:20

for the outlet very cool so that kind of

22:23

helps keep the bigger chunks out of out

22:26

of that needle valve yeah it's a thin

22:27

mesh strainer that just tries

22:29

that that's in there to help keep that

22:31

keep that discharge clean

22:33

that's awesome do we sell replacement

22:35

parts for that guy

22:36

that one we don't no no you can actually

22:39

get in you should be able to get in and

22:41

clean it out and put it back in service

22:43

uh being all stainless steel inside you

22:46

know there's not a whole lot that

22:47

typically will break down

22:49

sure so now that we've covered

22:53

our bases on the product

22:57

how many air vents can you actually put

22:59

in one system

23:01

it's kind of unlimited you know when you

23:02

talk about our product

23:05

it might not be uncommon to see

23:08

you know the max cal down in a

23:10

commercial boiler room and

23:12

you know maybe a valcal on top of a

23:14

storage tank and a mini cal

23:16

off the boiler or on a high point of a

23:18

riser and a hydrocal out on a

23:20

on a baseboard in the system i mean you

23:21

could see or even our

23:23

337 manual out in the system yeah and

23:26

that's that's why we have so many

23:28

different sizes because of the different

23:30

scfm ranges that might be required in

23:33

different kinds of systems right

23:35

and the locations of them yeah exactly

23:38

you know the one question i get quite a

23:39

bit too

23:40

is about a domestic water system yeah

23:43

we we do get that quite often and i

23:46

think

23:48

the biggest question we get when it

23:50

comes to the plumbing side of it is

23:53

hey don't don't you offer a air

23:56

separator for plumbing

23:57

after a recirc line yeah they're looking

24:00

for a separator

24:01

yeah well we don't have a separator but

24:03

we do have our air vent with our

24:05

with our plumb vent yeah we have a plumb

24:07

vent available

24:08

so it's based off of the 50 26 yeah the

24:11

robo cal

24:12

and it's made out of low lead brass and

24:15

it also incorporates

24:17

the external threads to use

24:20

the hydroscopic yeah actually comes with

24:22

the hydroscopic cap

24:24

yeah it's it's a great little vent for

24:26

plumbing risers yeah so you put that at

24:27

the high point of your riser

24:29

i mean you can have multiple again you

24:30

can have multiple plumb vents in your

24:32

system if you have multiple risers or

24:35

you know even down in the mechanical

24:38

space at a high point you know you might

24:40

have a

24:40

you know multiple risers tying together

24:42

to a manifold and then piped up and over

24:44

to

24:45

back to the hot water heater and you

24:47

might have a high point where air keeps

24:50

migrating it's a great location for it

24:52

you got it i mean yeah that's where this

24:55

valve shines

24:56

is in plumbing systems and research

24:59

i don't know how many times we had

25:00

people calling in asking for an air vent

25:03

for a research system because

25:05

their customer you know would turn on

25:07

the faucet and they'd get a huge

25:08

spit of air and then the faucet would

25:11

spit a lot

25:12

well enter the plum vent here we go

25:14

exactly and

25:16

i mean to the best of my knowledge i

25:17

think we're the only one on the market

25:19

with a low lead air vent

25:21

yeah i i don't see another product out

25:24

there that's a low lead brass option

25:26

right so yeah i mean a lot of different

25:29

products available you might

25:30

you might have a system that you know

25:32

one one of the products fits your needs

25:35

or

25:35

all of them i mean so we've got a wide

25:38

range of product to cover

25:40

cover your system yeah and if you're

25:42

really not sure give us a call

25:44

drop us an email we're happy to help you

25:47

out yeah absolutely

25:49

so what do you want to talk about next

25:50

week greg we're going to talk about air

25:52

separators

25:53

air separators didn't we just talk about

25:55

that no

25:57

commonly confused with air vents air

25:59

separators are

26:00

a little more efficient at removing air

26:03

from fluid you bet they are

26:04

all right so that's what we're going to

26:06

talk about next week sounds great i look

26:08

forward to that

26:08

see you then thank you for tuning in

26:11

if you ever need help please feel free

26:14

to contact our tech support team

26:15

anytime at techsupport.us

26:19

Caleffi.com or call us during our

26:22

business hours

26:23

at 7 30 a.m to 4 30 p.m

26:27

central time at 414-238-2360

26:38

[Music]

26:43

you