Latest Frequently Asked Questions
What are air admittance valves (AAVs)?
Air Admittance Valves (AAVs) are plumbing devices that allow air to enter a drainage system when negative pressure occurs, helping maintain proper system pressure while preventing sewer gases from entering the building.
Are Oatey air admittance valves code-compliant?
Yes, Oatey Sure-Vent Air Admittance Valves comply with ASSE Standards 1050 and 1051 and are IAPMO listed, making them acceptable under many plumbing codes when installed in accordance with local regulations and manufacturer instructions.
What are the benefits of using an AAV over a traditional vent?
AAVs simplify installation, reduce roof penetrations, and are ideal for remodels or locations where venting through the roof is not feasible.
How do I choose the right supply box for my application?
Selecting the right supply box depends on the fixture or appliance, available installation space, access requirements, and applicable plumbing codes.
What are the benefits of using Oatey stop valves?
Stop valves allow water to be shut off at individual fixtures, making repairs, appliance replacement, and emergency maintenance easier while helping reduce the risk of water damage.
What is the diameter of the Cherne Disc Seal bypass?
2 inches.
How many bladders come with the Cherne Disc Seal?
Each disc seal will include a double bladder. This means two bladders will be included in the purchase of each disc seal. The double bladders are engineered to provide a leakproof seal.
With the weights varying, how has Cherne made it easier to use to use the Cherne Disc Seal?
Cherne has designed the disc seals by using a lightweight, corrosion-resistant aluminum. The disc seals also include handles that assist for easy transporting and installation.
What are the different Cherne Disc Seal sizes offered?
The disc seal sizes range from 24 inches to 96 inches.
Part Number
Disc Seal Size
Max Back Pressure
Bypass Diameter
Weight
102418
24 IN
5 PSI
2 IN
65.52 LB
102718
27 IN
5 PSI
2 IN
74.72 LB
103018
30 IN
5 PSI
2 IN
85.07 LB
103318
33 IN
5 PSI
2 IN
95.05 LB
103618
36 IN
5 PSI
2 IN
105.38 LB
103918
39 IN
5 PSI
2 IN
126.72 LB
104218
42 IN
5 PSI
2 IN
138.35 LB
104518
45 IN
5 PSI
2 IN
150.32 LB
104818
48 IN
5 PSI
2 IN
162.69 LB
105418
54 IN
5 PSI
2 IN
188.45 LB
106018
60 IN
5 PSI
2 IN
215.58 LB
106618
66 IN
5 PSI
2 IN
244.06 LB
107218
72 IN
5 PSI
2 IN
329.34 LB
107818
78 IN
5 PSI
2 IN
367.29 LB
108418
84 IN
5 PSI
2 IN
405 LB
109018
90 IN
5 PSI
2 IN
444.39 LB
109618
96 IN
5 PSI
2 IN
485.13 LB
What is the maximum back pressure for Cherne Disc Seals?
5 PSI.
What is the purpose for the Cherne Disc Seals?
Cherne Disc Seals are designed to block flow or provide bypass flow in underground pipes with a low backpressure. Used for pipe construction, rehabilitation, cleaning and testing, these plugs can be separated into two halves to effortlessly fit through any manhole.
What is the length of time needed to test a joint with no more than 1 PSI drop?
5 seconds