Model PRV44

Product catalog summary

Basic Information
The document provides details about the self-operated pressure reducing valve, Model PRV44. It is designed to close when outlet pressure increases and is suitable for steam, compressed air, water, and neutral gases. The valve has a Kv range of 2.0 to 3.0 [m3/h]·[bar] and a Cv range of 2.3 to 3.5 [gpm]·[psi]. It operates within a temperature range of -10 to 210ºC (14 to 410ºF) and supports connections that are flanged (DIN - ANSI) or threaded (BSP - NPT). The inlet maximum pressure is 16 [barg], and the outlet pressure ranges from 0.2 to 8 [barg]. Available sizes are DN15, DN20, and DN25 (1/2”, 3/4”, and 1”).

Materials
The valve components are made from various materials, primarily stainless steel (S.S.) and PTFE for seals and gaskets. Key parts include the body, seal screw, seat, spring cover, and regulation screw, all made from stainless steel (AISI 316 or 316L), while the seal and gaskets use Graphite PTFE and PTFE materials.

Dimensions and Kv
The valve dimensions are consistent across sizes DN15, DN20, and DN25, with a height (H1) of 135 mm and a total height (H2) of 185 mm. The weight for each size is 2.5 kg. The Kv values are 2.0, 2.5, and 3.0 for DN15, DN20, and DN25, respectively.

Standard Configurations
The standard configurations detail the dimensions for both EN and ANSI standards, including the number of holes and diameter for each size. The weight for each configuration is 5 kg.

Operation
The PRV44 operates on a direct action principle. The valve closes when the downstream pressure exceeds the set pressure. Adjustments to the outlet pressure are made by turning the regulating screw anticlockwise. It is recommended to leave a space of 0.5 to 1 meter before the check valve for better compensation.

Standard Installations
The document outlines the standard installation components, including check valves, filters, inlet and outlet pressure manometers, the pressure reducing valve, and a safety valve. The system is ATEX approved.

Disclaimer
The information provided is subject to change without notice, and users should verify all technical data and specifications before use. EFSVALVES does not guarantee the accuracy of the information and assumes no responsibility for its use.

Catalog excerpts

Type Operation Model Connections Ends Ratings Sizes PARTS Pressure Reducing Valve - Model PRV44 Self-operated pressure reducing valve with bellows Valve tends to close when outlet pressure increases PRV44 Flanged (DIN - ANSI) or Threaded (BSP - NPT) RF - RF, NPT, BSP PN16 (150#) Kv Cv Temperature Inlet max. pressure Outlet pressure Suitable for 16 [barg] 0,2 - 8 [barg] Steam, compressed air, water and neutral gases GALILEO 8, POL. IND. CAN ESTELLA 08635 ST ESTEVE SESROVIRES, BARCELONA, SPAIN www.efSVaIVeS.c°m REV. 01/ 14 This information is subjected to changes

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Model PRV44 - Pressure Reducing Valve REV. 01/ 14 This information is subjected to changes GALILEO 8, POL. IND. CAN ESTELLA 08635 ST ESTEVE SESROVIRES, BARCELONA, SPAIN www.efsvalves.c°ITI

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Model PRV44 - Pressure Reducing Valve IMPORTANT NOTE: Kv or CV reduced is available In red color, sizes out of standards GALILEO 8, POL. IND. CAN ESTELLA 08635 ST ESTEVE SESROVIRES, BARCELONA, SPAIN www-efsvalves-c°m REV. 01/ 14 This information is subjected to changes

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Model PRV44 – Pressure Reducing Valve OPERATION PRV concept is direct action. Inlet pressure comes into the valve and closes it because of the sections difference. When we compress the spring (10) through the regulating screw (9), the stem-seal (11, 17 and 3) opens the valve and allows the regulation. When any downstream valve is closed and flow=0, PRV will absorb the oscillations and keep the outlet pressure according to the regulation. The valve closes when the downstream pressure exceeds the regulating set pressure. It is recommended to leave a space (between 0,5 and 1 meter) until the c heck...

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Model PRV44

Model PRV44

Catalog excerpts

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