Downstream control:
Model 535-H single ported design is used for moderate applications upto 2" size. For severe applications & sizes above 2", 525 series double ported valves are used.

Upstream control:
Model 526 double ported valves are available upto 4" size for upstream control.

Compact Actuators:
Special compact actuators having diaphragm material,compatible with the fluid handled are used for the self regulating valves.

External impulse connection:
Wetted parts in the actuator are the diaphragm & diaphragm case alone, avoiding the need for frequent maintenance.