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CR-31 Push-Button Calibration Regulator
Enables controlled manual gas release at a constant flow rate with minimal flow loss. Designed for quick and reliable bump testing.
Key features
- Gas flows only while the button is held, for controlled bump testing
- Fixed flow rate to order, from 0.1 to 8 litres per minute
- 5/8 in x 18 UN C10 cylinder inlet, 6 mm taper outlet
- 83 bar maximum inlet, 0 to 103 bar inlet gauge
- Nickel plated brass with a brass piston, for non-reactive gases
Enquire about this product
Priced to your specification. Most enquiries are answered the same working day.
Request a quoteThe CR-31 is a push button regulator for calibration gas cylinders, used for bump testing gas detectors where the operator needs to release gas at a known constant flow for as long as the button is held and no longer. The flow rate is fixed at the factory to the figure your detector procedure calls for, anywhere from 0.1 to 8 litres per minute, and the outlet pressure is 4.1 bar. The inlet is the 5/8 inch by 18 UN thread used on C10 calibration cylinders and the outlet is a 6 mm taper. Maximum inlet pressure is 83 bar and the inlet gauge reads 0 to 103 bar. Body, cap and button are nickel plated brass with a brass piston and Viton, Buna-N and PTFE seals, the brass version being for non-reactive gases. It weighs 0.33 kg.
Specification
| Maximum Inlet Pressure | 83 bar |
|---|---|
| Setting Range | 4.1 bar outlet, fixed |
| In/Out Connections | 5/8 in x 18 UN (C10) inlet; 6 mm taper outlet |
| Gas Compatibility | Non-reactive gases, brass version |
| Stages | single stage |
| Weight | 0.33 kg |
| Gauge | Inlet gauge, brass, 0 to 103 bar |
| Material | Nickel plated brass body, cap and button; brass piston; Viton, Buna-N and PTFE seals |
| Flow Rate | 0.1 to 8 L/min, fixed to order |
| Technology | Piston, push button |
Downloads
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Common questions
- How does the CR-31 do a bump test?
- Gas flows only while the button is held down, so the detector gets a known flow for as long as the test needs and no longer, with very little gas lost. The flow rate is fixed at the factory to the figure your detector procedure calls for, anywhere from 0.1 to 8 litres a minute, and the outlet pressure is 4.1 bar. Say which flow you need when you order.
- Which calibration gas cylinders does the CR-31 fit?
- Cylinders with the 5/8 inch by 18 UN valve thread, the C10 calibration cylinder thread. The maximum inlet pressure is 83 bar and the inlet gauge reads 0 to 103 bar, so you can see what is left in the cylinder. The outlet is a 6 mm taper for the tubing to the detector.
- Which gases can the CR-31 be used with?
- Non reactive calibration gases on the brass version listed here: the body, cap and button are nickel plated brass with a brass piston and Viton, Buna-N and PTFE seals. For a reactive or corrosive calibration gas, ask us before ordering so the materials are checked against the gas. It is a single stage piston regulator and weighs 0.33 kg.
