CHK-8SV Check Valve

Stainless Steel check valve with Viton seal. 

Spring-loaded check valve with 2.5 PSI crack pressure for positive seal, yet allows a high flow of ozone gas.  All stainless steel body with stainless steel spring and plunger.  Viton 0-ring used for sealing.

Specifications:

     -Working pressure = 1500 PSI

     -Working Temperature = -10 - 105-deg C

     -Crack pressure = 2.5 PSI

     -Threaded ends = Female NPT

Materials:

     -Body = 316 Stainless Steel

     -O-Ring = Viton

     -Spring = 304 Stainless Steel

     -Cap = 316 Stainless Steel

     -Spool = 316 Stainless Steel

     -Snap Ring = 304 Stainless Steel

See image above

This check valve is completely serviceable and rebuildable.  The only sealing material is a Viton O-ring.  This O-ring is easily replaceable is ever necessary.  The body is one piece and requires no seal for the body.  Only the O-ring is a sealing surface.  This makes the CHK-SV check valve the most reliable check valve over the long term.

Dimensions:

Common Uses:

     -Ozone gas backflow prevention

     -Isolation ozone from an oxygen concentrator

     -Prevention of water damage to an ozone generator

     -Used directly on Mazzei Venturi (see below)

We use this venturi directly on the Mazzei venturi.  The standard check valve supplied with a Mazzei venturi is made out of Kynar material and does not always create a leak-proof connection and may leak water slowly past the seal in many situations.  By removing the stock check valve and threading this check valve directly on the Mazzei venturi, a more secure connection is possible with stainless fittings, and a positive check valve with a positive seal is used.