Plastic True Union Ball Valve, Type 21











ISO 9001:2000 Certified


Plastic True Union Ball Valve - Type 21

The Chemline Type 21 True Union Ball valve incorporates state of the art features and performance. This is a full port, full blocking True Union valve pressure rated at 16 bar (230 psi)****. Double stem o-rings are provided for safety. Pneumatic or electric actuator mounting is easily accomplished in the field – Just pull off the handle to reveal an integral ISO mounting platform. Optional threaded inserts in the base are available for anchoring the valve.

230 psi Working Pressure
NSF 61 Certified*****
Double Stem O-Rings for Safety


PVC, CPVC, PP, PVDF

Series: Type 21
Sizes: 3/8" - 4"
Ends: Socket, Threaded, Flanged,
Butt* or ChemFlareTM
Seats: Teflon® PTFE
Seals**: EPDM, FKM (Viton®), CPE***
Type 21 Series True Union Ball Valve Data Page
Installation and Maintenance Manual

* Butt ends for fusion to Chemline metric PP or PVDF piping.
** Other materials are available special order.
*** CPE = Chlorinated Polyethylene.
**** PVC, CPVC and PVDF 1/2" to 2" are rated at 230 psi; 2-1/2" to 4" and all size PP valves are rated at 150 psi at 20oC.
***** PVC valves with EPDM or FKM (Viton®) seals are certified under NSF/ANSI Standard 61 for contact with drinking water.






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