Calibration Gas Equipment
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.
Calibration Gas Regulators
Regulators and fittings for calibration and span gas cylinders, used for gas detector bump testing and calibration. The range covers fixed flow regulators at preset flow rates, dial-a-flow units where the rate is selectable, push button and push type regulators for controlled manual release, piston type constant flow units and two-stage pressure reducing regulators, plus adaptors for the common calibration cylinder threads.
The right unit depends on the flow rate the detector maker specifies and whether you need one fixed rate or several. Product pages give the flow rates each unit supports.
Regulators
Calibration Gas Equipment
CR-32 Push-Type Calibration Regulator
Allows users to manually draw gas at a stable consistent flow whenever required with negligible flow drop-off.
Calibration Gas Equipment
CR-96 Fixed-Flow Calibration Regulator
Features a robust single-stage design that delivers a preset constant flow rate for calibration applications.
Calibration Gas Equipment
CR-121 Two-Stage Pressure-Reducing Regulator
Adjustable two-stage pressure-reducing regulator engineered to maintain highly stable outlet pressure as cylinder pressure decreases.
Calibration Gas Equipment
ACR-201/203 Dial-A-Flow Calibration Regulator - Brass
Offers a selection of preset constant flow rates through its single-stage design. A top-mounted dial allows users to manually adjust.
Calibration Gas Equipment
ACR-202/204 Dial-A-Flow Calibration Regulator - St/St
Provides a series of preset constant flow rates using a single-stage mechanism. The adjustable dial enables quick manual selection.
Calibration Gas Equipment
CR-301 Vari-Flow Calibration Regulator
Offers a selectable range of preset constant flow rates using a single-stage design. The top-mounted dial allows users to change flow.
Calibration Gas Equipment
Adaptors 07 Series
Robust selection of high-quality fittings designed to ensure secure leak-tight connections across a wide range of gas handling.
Calibration Gas Equipment
S Series 75 Constant Flow Regulator
Rotarex piston constant flow regulator for calibration gas cylinders: outlet preset at 3.5 bar, ten position flow selector to 3 or 5 l/min, 200 bar inlet, 0.7 kg.
Common questions
- What is span gas?
- Span gas is a calibration gas of known concentration, used to set what a gas detector reads at a point across its range. A bump test only checks that a detector responds at all. A span calibration sets how accurately it reads. Both depend on the gas arriving at a steady, known rate, which is the job of the regulators on this page.
- What is a fixed flow regulator?
- A fixed flow regulator delivers one preset flow rate from a calibration cylinder, with nothing to adjust. That makes it the simplest and most repeatable option where every test uses the same rate. Where several detectors need different rates, a selectable or dial type unit saves carrying more than one regulator to the same job.
- Which flow rate do I need?
- The detector manufacturer sets it, and it is normally printed in the instrument's own calibration procedure rather than chosen by the user. Match the regulator to that figure. Tell us the detector and the thread on your calibration cylinder and we will confirm which unit fits both.
Not sure what you need?
Send us the gas, the pressure and the connection and we will come back with the right unit.
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