For over 50 years, the compact, fluoropolymer (PTFE/FEP/PFA), Sanitary Insert Valve has been used as the most economical solution to providing a check valve in a new or existing sanitary piping system. This valve style is designed to fit into grooved-end clamp-type fittings. Since the Sanitary Insert Valve replaces the gasket normally used with clamp joints, no extra space is required to accommodate the valve.
Two different types of Sanitary Insert Valves are available. They are distinguished by the following designations in their part numbers:
TC – Designates Tri-Clamp® fittings manufactured by Alfa Laval Inc. as well as Waukesha Cherry-Burrell® S-Line Series of fittings.
- CB – Designates the Waukesha Cherry-Burrell® Q-Line Series of fittings.
- NOTE: Sanitary Insert Valve Types TC and CB are NOT interchangeable!
- PED Compliance Statement: Due to the unique “insert” design of our 3S, SC, CB, TC, SI, & UV, style check valves, they do not constitute an “identifiable pressure bearing housing” as defined in PED Guideline 1/8. These styles must be installed into either ferrules or fittings to create a pressure bearing housing. Instead, they are classified as “components of pressure equipment” as defined in PED Guideline 1/8. As a result, these valves can be sold in the European Community and no CE Mark is required.In addition applicaitons where the maximum allowed oerating pressure is 0.5 bar (7.2 psi) or less, do not fall under the PED, regardless of the valve style.
Size & Dimension
NOTES (DIMENSIONS TABLE)*Due to molding process, orifice may vary.
**Maximum nominal dimension for a fully open valve with no spring.Consult factory for more informationAvailable Materials
Pressure Temperature Table
- PTFE (TF)
Body Material Line Size Non-Shock Pressure-Temperature Rating PTFE (TF) 3/4"- 2" 55 PSIG @ 100 °F 2-1/2 " - 4" 20 PSIG @ 100 °F
Seat material and spring material selection may limit the recommended service temperature.
See seat ratings, spring ratings, and body material ratings for their respective recommended service temperatures.
Consult the factory for reduced P-T rating above 100 °F. Standard spring material is 316 Stainless Steel.Flow Data
PRESSURE DROP PSI
Size Cv 3/4 2.4 1 4.6 1-1/2 9.5 2 20.9 2-1/2 37.0 3 76.0 4 141
FOR WATER AT 72°F
WATER FLOWRATE - GPM
Note: All flow curves and Cv values presume the valves are fully open with 1/2 PSI cracking pressure springs. Consult the factory for more information.Valve Weights
SIZE PTFE 3/4 0.2 oz. 1 0.6 oz. 1-1/2 1.1 oz. 2 1.8 oz. 2-1/2 2.3 oz. 3 5.1 oz. 4 11.2 oz.Seat & Cracking Pressure Options Valve Style Size Range Body Materials
Allowable Seat Materials
Standard Cracking Pressures
Standard Spring Material
SIV 3/4" - 2" PTFE AFLAS®
"Metal to Metal"
316 SS SIV 2-1/2" - 4" PTFE AFLAS®
"Metal to Metal"