Pyronics Flanged Adjustable Orifices are designed for setting gas and/or air flow on combustion systems. The cylindrical plug valve has a micrometer type screw thread adjusting stem. This fine running thread permits very fine control of valve position and gas flow.

Models 3TSV-FM and 4TSV-F feature a slotted throttle adjustment continuously adjustable from full open to full closed. Throttle setting is maintained independently of normal on-off operation. Model 3TSV-FM is a Factory Mutual Approved safety cock incorporating two 1/4 inch copper tubing checking system connections.

The Ball Valve provides a large port and straight through flow with minimum pressure drop. The Ball is plated with a hard chromium finish and rotates on reinforced Teflon seats assuring long life and easy operation.