swing check valve BB series. for gas for steam. Temperature: 20, 300, 425, 450, 538 °C. Pressure: 6 bar - 40 bar. DN: 50 mm - 500 mm. DISCO swing check valves CB 14 and 26 for

Non-return valves are key safety devices in gas systems, plants and pipelines. They prevent the formation of dangerous gas mixtures and other 

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Air, Water, Gas. Pressure. 10 kg. We are offering a comprehensive range of Wafer Single Plate Non Return Valve. Available in different pressure rating and sizes, these are offered at most competitive prices. Specifications: Pressure Rating: Class 150#, PN, 1.0, PN 1.6. Manufacturing Standard: Generally Conforming to API 594.

Definition of non-return valve: The non-return valve permits the medium to flow in a single direction. The reason to fit the non-return valve is to make sure that the medium is flowing inside the pipe in the correct direction. It is dependent on the condition of the pressure. Otherwise, there can be a reversal in the flow direction.

Gas non-return valves for town gas, grid gas, natural and liquid gas, Methane (cleaned Biogas), Hydrogen, Oxygen, Nitrogen, inert gases and compressed air Gas non-return valves / Check

Non-return valves are flow sensitive, and rely on the steam flow to open and close. The internal disc opens and allows the flow of steam through the valve. The disc will begin to close as forward steam flow decreases or is reversed, depending on the design.

This valve is additionally named as double-disc or split disc check valve. It's factory-made in wafer-body pattern and is out there with soft or exhausting seats. It's extremely popular in low-pressure liquid and gas field services. Its light-weight compact construction makes it a preferred check valve once area and convenience are necessary.

It also applies to both general purpose NRVs for normal low pressure duty and also special purpose NRVs when higher operating pressure differentials are 

Non-return check valves should also be fitted on the outlet side of the gas meter to give general protection, and smaller sizes should be fitted on the inlet pipe to any appliance where gas and air are mixed. Positive Seal Higher Flows Higher Pressure Range Integral Inlet/Outlet Pressure Taps Inlet Straining Screen can help protect equipment

Suitable for carburetor and low pressure fuel system. 1/8" BSP Male - Thread Check Valve One Way Non-return Valve Water Oil Gas. £6.49 + £14.89 P&P + £14.89 P&P + £14.89 P&P. Non Return Valve One Way Inline 6mm 8mm 10mm 12mm Fuel Air Water Pipe Tube Hose. £3.99