Rotork Fairchild Model 72 high performance miniature regulator has a slightly larger footprint than the Model 70, which in conjunction with its over molded pintle valve, provides highly responsive, yet extremely stable operation. The Aluminum bonnet and valve body of the Model 72 makes it a light weight and versatile product.
Operating Principles
When the setpoint is reached, the upward force of the output pressure that acts on the bottom of the Diaphragm balances with the downward force that acts on the top of the Diaphragm. If the output pressure rises above the setpoint, the force that acts on the bottom of the Diaphragm moves the Diaphragm Assembly upward to close the Supply Valve and open the Relief Valve. Excess output pressure exhausts through the Vents in the unit until it reaches the setpoint. The Vibration Damper dampens the throttling action of the Valve.
Features
Model 72 High Performance Mini Regulator Features
- Control sensitivity of 2" water column and a supply pressure effect of less than 0.5% to deliver consistent and reliable precision accuracy to maintain your desired set point regardless of supply pressure changes or conditions
- Five set point pressure ranges from 0-5 psi, 0-3.5 BAR, 0-35 kPa up to 2-100 psi, 0.1-7 BAR, 15-700 kPa
- Compact size allows installation in restrictive spaces
- Repeatability within 0.02 psig dead ended - facilitates highly accurate setpoint control
- Lightweight aluminum and zinc plated steel construction permits use in portable, corrosive or difficult environments
- Vibration damper provides low noise operation
Specifications
Model 72 High Performance Mini Regulator Specifications
| Specification | Details |
|---|---|
| Ranges | 0–5 psig [0–0.35 BAR] up to 2–100 psig [0.15–15.7 BAR] (see p/n table) |
| Consumption | No measurable consumption (Non-Relieving unit) |
| Supply Pressure | Max: 300 psig [20 BAR] (2000 kPa) Min: 25 psig [1.8 BAR] (1800 kPa) |
| Supply Pressure Effect | < 0.025 psig [0.0018 BAR] for 5 psig [0.35 BAR] change in supply pressure |
| Flow Capacity | 2.5 SCFM (4.25 m3/hr) @ 100 psig [7 BAR] supply and 30 psig [2 BAR] setpoint |
| Exhaust Capacity | 0.15 SCFM (0.29 m3/hr) with 5 psig [0.35 BAR] downstream pressure |
| Ambient Temperature | -40°F to +160°F (-40°C to +71°C) |
| Materials of Construction |
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Q & A
Model 72 High Performance Mini Regulator Q & A
Downloads
Download Rotork Fairchild Model 72 High Performance Mini Regulator Datasheet
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