Pressure Reducing Valve Manufacturer in Italy

As a Pressure Reducing Valve Manufacturer in Italy, EuroValve Italia provides valves designed to reduce a higher inlet pressure to a controlled and stable downstream pressure. These valves operate automatically in response to pressure changes and are used where pipelines, equipment and process systems require a regulated pressure below the upstream supply pressure.

The range includes direct-acting and pilot-operated configurations for water, steam, air, gas and compatible industrial fluids. Selection is based on the required inlet and outlet pressures, flow capacity, operating temperature, pressure differential, connection type and material requirements.

What is a Pressure Reducing Valve?

A pressure reducing valve (PRV) is an automatic regulating valve that reduces a higher inlet pressure and maintains the downstream pressure at a predetermined setting. As downstream demand or pressure conditions change, the valve automatically adjusts its opening to regulate the outlet pressure.

A pressure reducing valve performs a different function from a pressure relief valve. A reducing valve regulates downstream pressure during normal operation, while a relief valve opens when pressure exceeds a specified limit to protect the system from overpressure.

Types of Pressure Reducing Valves

Valve Type	Operation & Application
Direct Acting Pressure Reducing Valve	Uses downstream pressure and an adjustable spring or loading mechanism to regulate valve opening without a separate pilot system. Suitable for relatively simple pressure-reduction duties.
Pilot Operated Pressure Reducing Valve	Uses a pilot regulator to sense downstream pressure and control the main valve. Suitable for higher flow capacities and applications requiring closer downstream pressure regulation.
Steam Pressure Reducing Valve	Designed to reduce and regulate steam pressure in steam distribution, power and industrial process systems.
Water Pressure Reducing Valve	Maintains a controlled downstream pressure in industrial water, utility and water distribution systems.

Technical Specifications

Parameter	Technical Options
Valve Function	Automatic Downstream Pressure Reduction and Regulation
Operating Principle	Direct Acting, Pilot Operated
Body Construction	Cast, Forged
Pressure Setting	Adjustable Downstream Pressure
Pressure Sensing	Internal or External Sensing, depending on configuration
Service Media	Water, Steam, Air, Gas and compatible industrial fluids
End Connections	Raised Face Flanged, Ring Type Joint Flanged, Butt Weld, Socket Weld, Threaded
Seat Configuration	Metal Seated, Soft Seated
Control Method	Self-Actuated, Pilot Controlled
Testing	EN 12266-1, API 598 where applicable to the valve construction

How Pressure Reduction Works

A pressure reducing valve responds to changes in downstream pressure. When the downstream pressure falls below the set pressure, the regulating element opens further to allow additional flow. As the downstream pressure rises toward the set value, the valve reduces the available flow area to maintain the required outlet pressure.

In a direct-acting design, downstream pressure is balanced against a spring or other loading force to position the regulating element. A pilot-operated design uses a separate pilot regulator to control the main valve, allowing higher flow capacity and closer pressure regulation for suitable applications.

Materials and Grades

Material selection depends on the process medium, inlet pressure, pressure differential, operating temperature and corrosion requirements. Body and internal materials should therefore be selected for the actual service conditions rather than applying one material specification across every pressure reducing valve design.

Material Family	Relevant Grades
Carbon Steel	ASTM A216 WCB/WCC, ASTM A105/A105N, EN 1.0619
Low-Temperature Carbon Steel	ASTM A352 LCB/LCC, ASTM A350 LF2
Chrome-Moly Alloy Steel	ASTM A217 WC6/WC9, ASTM A182 F11/F22
Stainless Steel	ASTM A351 CF8/CF8M/CF3/CF3M, ASTM A182 F304/F304L/F316/F316L, EN 1.4301, 1.4307, 1.4401, 1.4404
Duplex Stainless Steel	UNS S31803/S32205, ASTM A182 F51, EN 1.4462
Super Duplex Stainless Steel	UNS S32750/S32760, ASTM A182 F53/F55, EN 1.4410/1.4501
Nickel Alloys	Inconel 625 / UNS N06625, Hastelloy C276 / UNS N10276, Monel 400 / UNS N04400
Internal Components	Stainless Steel, hardened stainless steel and hard-faced materials for applicable high differential-pressure or erosive services

Carbon steel is suitable for many general industrial services, while low-temperature carbon steel is used where reduced-temperature toughness is required. Chrome-Moly steels are relevant to elevated-temperature steam service, while stainless, Duplex, Super Duplex and nickel alloys provide increased corrosion resistance for more aggressive process media.

Applications and Industries

Application	Pressure Control Requirement
Steam Distribution	Reducing high-pressure steam to the pressure required by downstream equipment or process lines
Industrial Water Systems	Maintaining controlled downstream water pressure despite changes in upstream pressure or demand
Oil & Gas Processing	Pressure reduction and regulation for compatible liquid and gas process streams
Power Generation	Pressure regulation in steam, water and auxiliary systems
Chemical & Petrochemical Processing	Controlled pressure reduction for compatible process fluids
Compressed Air & Gas Systems	Reducing supply pressure to the required downstream operating pressure

Selecting the Right Pressure Reducing Valve

Selection should consider the process medium, inlet pressure, required outlet pressure, minimum and maximum flow rate, operating temperature, pressure differential, line size and connection type. These parameters determine the appropriate valve size, regulating mechanism, body material, internal construction and pressure rating.

For technical selection or quotation, provide the process medium, inlet and required outlet pressures, flow rate, temperature, line size, connection type and material requirements.