Laminar Pte Ltd Singapore

Laminar Pte Ltd


Pressure Reducing Valves

Group 1 1
Group 1 1


Laminar’s diaphragm-type control valves for pressure-reducing applications (PRV) automatically reduce a higher or unstable inlet pressure to a lower, desired outlet pressure. The outlet pressure remains constant, regardless of fluctuations in flow rate or constant pressure on the inlet side.

Designed to withstand even the toughest environments, PRVs reduce higher upstream pressure to lower constant downstream pressure, regardless of the fluctuating demand or the varying upstream force.

PRVs are essential to controlling a wide range of pressures in water systems. Their installation and maintenance are vital for proper system operation, from residential plumbing to industrial machinery. In steam systems, pressure-reducing valves are used to control steam pressure precisely.

The main control valve is pilot operated. Also, it can be turned into a 3-way solenoid operated Pressure Reducing Valve, activated by an electric current or charge to open or close the main valve.

The standard valve is provided with a “normally closed” solenoid valve. A “normally open” solenoid valve is optional, making it an electrically operated control valve. It can also be provided with a 3-way relay valve, activated by a pneumatic pressure command to open or close the main valve to become a pneumatically operated control valve.



10, 16, 25




Water | Effluent water


Transmission pipeline | Distribution network | Pumping stations | Treatment plants | High-rise buildings | Pressure management


  • Diaphragm-operated control valve with own-medium control for the regulation of pressure and flow rates in pipeline systems without an external power supply
  • Independent of variations in inlet side pressure and flow rate variations, the valve reduces a higher inlet pressure to a predetermined outlet pressure.
  • With flange ends on both sides according to EN 1092-2
  • Separate connection of pilot control circuit and pressure gauges
  • Designed to reduce cavitation by using a slotted cylinder
  • Body and bonnet of Ductile Iron
  • Diaphragm of WRAS-approved EPDM
  • Control circuit and pilot valves body of stainless steel or brass
  • Hydraulic test according to EN 1074 and EN 12266; Seat: 1.1 x PN. Body: 1.5 x PN
  • It can be modified to be electrically or pneumatically operated.


A Pressure Reducing Valve is a type of valve designed to reduce the pressure of a liquid or gas from an upstream source to a lower, desired pressure on the downstream side. This valve helps maintain consistent and controlled pressure levels at the outlet side in various applications, such as utilities, high-building, industrial applications, water transmission pipeline systems, firefighting systems and even air compressors.

Pressure-reducing valves are generally more cost-effective compared to pressure regulators.

PRVs are usually operated through an internal diaphragm, a pilot control circuit, or external electric or pneumatic signals. They can also be designed with other features, such as slotted cylinders (sometimes called trim) to reduce cavitation or flange ends for connection to other piping systems.

PRVs are typically located near the fluid or gas source, such as a pump, compressor, tank, or other storage device.

This placement ensures that the upstream pressure can be regulated before it reaches further down the distribution system.

The purpose of pressure-reducing valves in a plumbing system is to control incoming water pressure, ensuring that it is safe and consistent for the fixtures and appliances. PRVs must be installed correctly and adjusted to ensure proper plumbing system operation.

Without these valves, high water pressure can damage pipes, fixtures, and other plumbing system components leading to more water leakages in the network.

With pressure-reducing valves, you have precise pressure control of your plumbing fixtures.

It can help to reduce the risk of pipes bursting and fixtures failing due to excess pressure. Additionally, it can help keep energy costs down, as reduced pressures use less electricity to move water through pipes. It can also help extend the life of your plumbing system by reducing wear and tear on the various components.

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