Kofloc Backpressure Valve Model 6800 Series

Backpressure Valve


The backpressure valve is a kind of relief valve that keeps the pressure at the front stage of a valve constant. It can easily and quickly control the pressure of a tank with a large buffer and remove the constant flow of a mixed gas, which cannot easily be done by general regulation valves with a subsequent stage controlling function. This new concept of pressure regulation has been attracting much attention.


-Convenient panel-mount type

– Compact design

– High-speed regulation of primary-side pressure

– This greaseless clean valve permits gas control in a pure state.


– Tank pressure control

– Constant flow control of mixed gas

Standard Specifications

Model 6800A 6800B 6800AL 6800BL
Pressure setting 0.01-0.3MPa 0.01-0.6MPa 0.01-0.3MPa 0.01-0.6MPa
Maximum exhaust flow 1L/MIN 0.8L/ MIN 10L/MIN 10L/MIN
Proof pressure 0.8MPa
Heat resistance 5℃-60℃
Connection end Rc 1/4 (standard), Rc 1/8
Materials of parts in
contact with fluids
(A) Al, brass, NBR, POM
(SS) SUS316, FKM, fluorocarbon resin

(Note) The maximum flow may vary depending on operating conditions.

Written by Rudy Wiratama