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Cla-Val UK

Since 1936, Cla-Val has been a leading manufacturer of automatic control valves serving waterworks, fire protection, aviation ground fueling, marine and industrial customers throughout the world. Their commitment to excellence and continuous improvement shows in each valve they produce and in the many new products they introduce to the marketplace each year.

Pressure Reducing Valves (PRV's)


Cla-Val PRV/ Regulating Valves automatically reduce a higher inlet pressure to a steady lower
downstream pressure, regardless of changing flow rate and/or varying inlet pressure. Your valve can
be customised with additional functions.

1. Model: B90-01 Pilot Operated Pressure Reducing Valves

2. Model: B91-01 Pilot operated PRV with Non Return

3. Model: AQUA 80-681 Direct Acting Pressure Reducing Valve


Pressure Surge / Relief Valves


Model: B50-01 Pressure Relief / Pressure Sustaining Valves

Cla-Val Models 50GE-01/NGE50-01 Pressure sustaining/ Surge Relief valves are hydraulically operated, pilot-controlled, modulating valve designed to maintain constant upstream pressure within close limits. This valve can be used for pressure relief, sustaining, back pressure, or unloading functions in a by-pass system. In operation, the valve is actuated by line pressure through a pilot control system, opening fast to maintain steady line pressure but closing gradually to prevent surges. Operation is completely automatic and pressure settings may be easily changed.

Surge Arrestor Valve

Model: AQUA B70-526 Surge Arrestor incorporates as standard:

Automatic Surge Protection - The “always on” controlled air release function prevents hammer and surges in the line when filling or refilling pipes.

Vacuum Protection - The large orifice admits air in the riser to prevent vacuum and damage to pipes and fittings from occurring when the booster set is down (powered off).

Effective Air Release - The small orifice functionality allows air to be removed from the system while the system is pressurised, preventing the formation of air locks in the system and keeping the system running efficiently.

Guaranteed performance - Every valve is pressure tested to ensure trouble free operation.

Differential Pressure Valves

Model: 40-111 - Differential Pressure Control Valve (DPCV)

CLA-VAL models 40GE-111 / NGE40-111 are hydraulically operated, pilot controlled, modulating valves designed to maintain a constant differential pressure across a pipe-work sub-circuit or temperature control valve to a pre-determined value despite fluctuations in mains pressure and/or flow-rate.

Typical applications
Maintaining control authority across a device to control temperature in a building in a 2-port control system.

Model: 250-01 - Reverse Acting DPCV

CLA-VAL models 250GE-01/ NGE250-01 are hydraulically operated, pilot controlled, modulating valve designed to be fitted on a typical by-pass and maintain a pre-determined pressure differential allowing “unwanted” water to “spill” from the flow pipe to return pipe. The valve tends to open on an increase in differential pressure and close on a decrease in differential pressure.

Typical applications
Maintaining control authority across a device to control temperature in a building in a 3 port bypass circuit

You can find all the product Datasheets HERE or by clicking on the links above or CALL US ON 01494 534638 for more info.