Features

• Compact;

  The 67 Series Regulators are engineered for outstanding performance in a compact, lightweight package.

• Panel Mounting;

  Panel mount construction includes spring case with 1/4 NPT vent, handwheel adjusting screw and mounting nut.

• Pilot Supply Regulator;

  Improves the accuracy of two-path control regulators by reducing inlet sensitivity caused by fluctuating inlet pressures.

• Full Usable Capacity;

  ; Fisher Regulators are laboratory tested. 100% of the published capacities can be used with confidence.

• Internal Relief;

  The 67 Type have an internal relief valve with a soft seat for reliable shut off with no discernible leakage. These regulators are recommended for conserving plant air.

• Smart Bleed;

  Internal check valve to relief pressure from outlet when supply pressure is lost.

Construction   Materials

• Body: Aluminum (ASTM B85/Alloy 380) or Forged Brass

• Spring Case: Aluminum or Forged Brass

• Diaphragm: Nitrile (NBR) or Fluoroelastomer (FKM)

• O-Rings: Nitrile (NBR) or Fluoroelastomer (FKM)

• Drain ValveBrass or Stainless Steel

• Upper Spring Seat: Steel

• Control Spring: Plated Steel

Principle of   Operation

Downstream pressure is registered internally on the lower side of the diaphragm. When the downstream pressure is at or above the set pressure, the valve plug is held against the orifice and there is no flow through the regulator.

When demand increases, downstream pressure drops slightly allowing the spring to extend, moving the stem down and the valve plug away from the orifice. This allows flow through the regulator.

Technical Data

• Body Sizes and End Connection Styles

  1/4-inch NPT

• Maximum Inlet Pressure

  250 psig (17.2 bar)

• Maximum Outlet Pressure

  50 psig (3.4 bar) over outlet pressure setting

• Spring Range

  Recommended: 5-35 psi

  Actual: 0-35 psi

• Pressure Registration

  Internal