Stainless Steel Pneumatic Relays and Volume Boosters

Large Flow Capacity Volume Booster -- Type 6000SS
from ControlAir LLC

The Type 6000 Volume Booster is a one-to-one signal to output relay that, when used with a positioner/actuator, is designed to increase the stroking speed of control valves. A large input signal change to the volume booster delivers high volume, fast action throttling control. An integral bypass... [See More]

  • Material: Aluminum; Stainless Steel
  • Output Pressure: 150
  • Type: Volume Booster
  • Maximum Pressure: 150
Pneumatic Relays -- Model 62
from Siemens Process Instrumentation

The Series 62 Constant-Differential Relays serve as air-flow controllers maintaining a constant air purge for ech setting of an integral needle valve. By maintaining a constant-differential pressure drop across a built-in needle valve (for any flow setting up to 2.1 cu. ft. of air per hour). Series... [See More]

  • Material: Aluminum; Stainless Steel
  • Maximum Pressure: 150
  • Type: Ratio Relay
Large Flow Capacity Volume Booster -- Type 6600
from ControlAir LLC

Rapid Stroke Capability in a Rugged Aluminum or Stainless Steel Casing. The Type-6500 aluminum and Type-6600 stainless steel volume boosters are 1:1 signal to output relays that are utilized in applications that require high flow capacity. Typically they are used to increase throttling speed of... [See More]

  • Material: Stainless Steel
  • Output Pressure: 150
  • Type: Volume Booster
  • Maximum Pressure: 250
Lock-Up Air Relay -- Type 250
from ControlAir LLC

The ControlAir Type 250 Lockup Air Relay is a reliable unit for fail in place applications of control valves when air supply drops below acceptable pressure levels. Valve or damper position is maintained by capturing air pressure inside the diaphragm chamber (or piston cylinder) of the actuator,... [See More]

  • Material: Aluminum; Stainless Steel
  • Set Point Pressure: 15 to 120
  • Type: Air Lock Relay
  • Maximum Pressure: 125
Precision Air Relay -- Type 200
from ControlAir LLC

The Type 200 Precision Air Relay is a pilot operated, multi-stage 1:1 relay with a positive and negative bias adjustment capability. It accurately reproduces a signal pressure plus or minus the bias setting with consistent reliability. Output control and stability are maintained through a high gain... [See More]

  • Material: Stainless Steel; Zinc
  • Output Pressure: 120
  • Type: Bias Relay
  • Maximum Pressure: 150
Snap-Acting Pneumatic Relay -- Mite 70
from ControlAir LLC

Set to trip on either an increasing or decreasing control signal, the Mite 70 will vent one port to atmosphere while it locks up the pressure in a second line. The tripped position is then held indefinitely until the control signal is restored and a manual reset button is pushed. The trip point is... [See More]

  • Material: Aluminum; Stainless Steel
  • Set Point Pressure: 1 to 100
  • Type: Snap Acting Relay
  • Maximum Pressure: 100
Snap-Acting Pneumatic Relay -- MITE 85
from ControlAir LLC

The Mite 85 allows you to establish two adjustable trip points that control flow through a 3-way valve. An increasing signal that exceeds the high trip point will open "I" port to "H". A decreasing signal pressure that drops below the low trip point will vent port "H". This switching action is... [See More]

  • Material: Aluminum; Stainless Steel
  • Maximum Pressure: 120
  • Type: Snap Acting Relay
  • Port Size: 0.1250 to 0.2500