Mark 50/501/502/51 Series – Self-Operated
The Mark 50 Sliding Gate Back Pressure Regulator is used to regulate upstream pressure at a predetermined setpoint. The spring in the Mark 50 holds the sliding gate seats in their normally closed position.
Upstream pressure is sensed beneath the diaphragm. As the upstream pressure exceeds the setpoint, pressure is exerted on the diaphragm compressing the spring, which raises the stem to modulate the disc (the moveable component of the sliding gate seat set) toward the open position. As the seats open, upstream pressure is regulated to the required setpoint. A decrease in pressure relaxes the spring and diaphragm, moving the seats toward the closed position.
-
Sliding Gate Trim — Unique seat design provides unsurpassed trim life and accuracy
-
Fast Response — The short stroke of the sliding gate means fast response to changes in process conditions, resulting in less offset in pressure
-
Straight-through Flow — The flow is straight through the valve seats and body. Direction of the disc travel is at right angles with the flow, not opposed to the direction of the flow. Thus the flow does not unbalance the seats
-
Quiet Operation — The design of the Sliding Gate seats make them quieter than other types of regulators. The disc and plate are always in contact, which eliminates chattering. Straight-through flow minimizes turbulence
-
Minimum Maintenance — The Mark 60 sliding gate seats require no special tools for disassembly. The seats are pre-lapped at the factory and are self-lapping while in operation ensuring a continual tight shutoff
Mark 50 - Includes:
- 1/2" - 2"
- SST/Jorlon diaphragm materials, Standard Cv and one reduction
- FNPT end connections, HP option 2 inches and under
- DIN Flanges for CS or SST bodies (DN25 to DN50)
- 150# ANSI Flanges for CS or SST bodies
Mark 51 - Includes:
- FNPT End Connections
- SST/Jorlon diaphragm material
