The Mark 60 Sliding Gate Pressure Regulator regulates the downstream pressure to a predetermined set point. The spring holds the sliding gate seats in an open position to allow the process media to pass though the seats.
 
The downstream pressure is sensed beneath the diaphragm. As the pressure exceeds the set point, pressure is exerted on the diaphragm compressing the spring, which raises the stem to modulate the disc (the moveable component on the sliding gate seat set) toward the closed position.
 
As the seats close, downstream pressure will be reduced to the required set point. A decrease in pressure relaxes the spring and diaphragm to move the seats toward the open 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.