Rotork plc Datasheets for Pneumatic Relays and Volume Boosters
Pneumatic relays and volume boosters control output air flow and pressure in response to a pneumatic input signal. They can perform simple functions such as boosting or scaling the output, or use complex reversal, biasing, and math function operators.
Pneumatic Relays and Volume Boosters: Learn more
| Product Name | Notes |
|---|---|
| Adjustable Ration Relay -- M21 | Features Adjustable from 30:1 dividing ratio to 1:30 multiplying ratio. Venturi aspiration system. Optional input and output biasing. Floating seal ring isolates control chamber. Panel or Line Mounting Benefits Assures... |
| High Flow Reversing Relay -- M2500A | Features Control sensitivity of 1" water column. Flow capacity of 150 SCFM (255 m3/HR). Soft Supply and Exhaust Valve seats. Balanced Supply Valve. Aspirator Tube design. Separate Control Chamber. Benefits... |
| High Flow Positive Bias Relay -- M1500A | Features Control sensitivity of 1" water column. Large Supply and Exhaust Valves. Soft Supply and Exhaust Valve seats. A balanced Supply Valve. Aspirator Tube design. A separate Control Chamber. Unit... |
| Positive and Negative Bias Relay -- M14 | Features Control sensitivity of 1/2" water column. Balanced Supply Valve. Aspirator Tube design. Separate Control Chamber. Mounting Bracket available Canadian Registration Number (CRN) certification. Benefits Allows use in precision applications. |
| Reversing Relay -- M25 | Features Control Sensitivity of 1/8" water column. Balanced supply valve. Aspirator tube design. Separate control chamber isolates. Unit construction. Benefits Allows for use in high precision applications. Minimizes the effects... |
| Snap Acting Relay -- M24 | Features Control Sensitivity of 1/8" water column. Balanced supply valve. Aspirator tube design. Separate control chamber. Unit construction. Benefits Designed for use in precision applications. Minimizes the effects of supply... |
| 500 SCFM [850 m3/HR] Forward/Exhaust High Flow No Bleed Volume Booster with Bypass Valve -- M4800A | Features Cv = 9; Flow capacity of 500 SCFM (850 m3/HR). Ratio Accuracy of 0.5%. Fixed dead band between the operation of the supply valve and exhaust valve. Integral bypass... |
| 500 SCFM [850 m3/HR] Forward/Exhaust High Flow No Bleed Volume Booste -- M4900A | Features Cv = 9; Flow capacity of 500 SCFM (850 m3/HR). Ratio Accuracy of 0.5%. Very low dead band between the operation of the supply valve and exhaust valve. High... |
| 150 SCFM [255 m3/Hr] Forward/Exhaust High Flow No Bleed Volume Booster -- M4500A | Features Flow capacity of 150 SCFM (255 m3/HR). Five signal to output ratios. Control sensitivity of 1" water column. Soft Supply and Exhaust Valve seats. Separate Control Chamber. Optional remote... |
| Back Pressure Pneumatic Booster -- M4500ABP | Features Flow capacity of 150 SCFM (255 m3/HR) Control sensitivity of 1" water column. Large Exhaust Valve design. Separate Control Chamber Aspirator Tube design. Unitized Construction. Benefits Extremely fast and... |
| 40 SCFM [68 m3/Hr] Forward/Exhaust Flow No Bleed Volume Booster -- M2000 | Features Flow capacity of 40 SCFM (68 m3/HR) Balanced Supply Valve Aspirator Tube design. Soft Supply and Exhaust Valve Seats. Small signal volume. A separate Control Chamber isolates the Diaphragm... |
| 45 SCFM [76.5 m3/Hr] Forward/Exhaust Flow Volume Booster -- M20 | Features Flow capacity of 45 SCFM (76.5 m3/HR) Ten available pressure ratios Optional Adjustable By-Pass Needle Valve option includes bubble tight exhaust valve. Optional Fixed Negative Bias. A separate Control... |
| Back Pressure Pneumatic Booster -- M20BP | Features Flow capacity of 45 SCFM (76.5 m3/HR Aspirator tube design A separate Control Chamber isolates the diaphragm from the main flow. Unit construction. Mounting Bracket available Benefits Fast responsive... |
| 1800 SCFM [3058 m3/Hr] Forward/Exhaust Ultra High Flow Volume Booster -- M200XLR | Features Forward and exhaust flow capacity of 1800 SCFM (3058 m3/HR) Control sensitivity to 1" water column. Increased Sensitivity ("L") option. Separate Control Chamber. Optional Adjustable By-Pass Needle Valve (includes... |
| 1800 SCFM [3058 m3/Hr] Forward Ultra High Flow Volume Booster -- M200 | Features Forward flow capacity of 1800 SCFM (3058 m3/HR) Control sensitivity to 1" water column. Separate Control Chamber. Optional Increased Sensitivity configuration with larger Control Diaphragm. Unit construction. Mounting Bracket... |
| Positive Bias Relay -- M15 | Features Sensitive to 1/4" Water Column variation. Balanced Supply Valve. Aspirator Tube. Flow Capacity of 40 SCFM (68 m3/HR). Separate Control Chamber. Mounting Bracket available. Benefits Permits use in high... |
| Computing Relay -- M22 | Features Small bleed across relief seat. Multiple inputs available. Adjustable Bias Range from -18 to +15 psig. Two gauge ports located 90deg from supply and outlet ports. Line or Panel... |
|
Higher Pressure Selector Relay -- M91
Lower Pressure Selector Relay -- M90 |
Features Small, rugged design. Soft seat construction. Low selection differential. Fast response. Automatic switching. Benefits Suitable for installation where space is limited. Assures positive shutoff. Allow precise control of switching... |
| Multi-Stage Positive Bias Relay -- M85D | Features Two Stage Pilot Operation. 14 SCFM flow capacity in a small size unit. Low air consumption. Compact size. Available in 1/8", 1/4" and 3/8" standard port sizes. Benefits Allows... |