How much vacuum (inches of mercury) do manholes need to be tested to?
10 inches
What is the shelf life of smoke bombs?
Smoke bombs have a one year shelf life from the date of manufacture.
What type of oil / lubricant is used on the hydrostatic test pumps?
Diaphragm Hydrostatic test pumps use oil in the engine, in the gear reduction unit, and in the pump itself. 30 weight motor oil is used for the engine and pump. The gear reduction unit uses 90 weight gear lube.
**Piston Pumps only use oil in the engine. (30 weight motor oil.)
What is the difference between a piston style pump and a Diaphragm test pump?
All of Cherne’s hydrostatic test pumps are designed to pressure test new potable water lines. Piston style pumps can be pressure fed or suction fed.
Piston pumps cannot be run dry nor should they be used in conjunction with chlorine. (Chlorine is frequently used when new potable water lines are being tested to avoid contamination).
Diaphragm test pumps cannot be pressure fed. However they can be used with an optional gravity feed water tank sold by Cherne, or with a large container (like a garbage can) filled with water into which the intake hose can be placed.
Diaphragm pumps can be used with up to a 10% chlorine solution in the test water.
Is there an updated list of products that can be field scrapped?
No. Field Scrapping products should only be defined by plumbing product manager.
Where can you find the material safety data sheets for smoke bombs and liquid smoke?
Material Safety Data Sheets for smoke bombs and liquid smoke can be found in the technical information section of the Cherne website at www.cherneind.com/Data/ or www.oatey.com
What size plugs would you use a Poly Lift line on?
Cherne offers two poly lift lines. The poly lift line with inflator (Schrader) valve fittings can be used on any plug that has an eyebolt, and also has a inflator valve. The poly lift lines with gauge can be used with any plug that has an eyebolt, and also has a removable inflator valve fitting.
Does Cherne offer a plug that can be used to plug a bathtub waste and overflow when conducting a rough-in test?
Yes. The #012678 Tub Plug Set.
Does Cherne off a Mechanical Plug that can be used to block and fill with water a DWV when conducting a rough-in test?
Yes. the Iron Grip Plugs can be used for this application and comes in sizes 2”, 3”, 4”, 6”, 8”, 10” and 12.”
What is the difference between SDR 35 and SDR 26 pipe?
Both pipes have the same outside diameter. SDR 35 has a thinner wall that SDR 26.