Pressure Reducing Valve

Pressure Reducing Valve
Pressure Reducing Valve – 300

Pressure reducing & surge control valve automatically reduces a higher inlet pressure to a steady lower downstream pressure regardless of flow rate and inlet pressure fluctuations. Pilot valve enables the main valve to close quickly to prevent downstream surges.

Specifications

  • Pressure Class : 150 & 300 #
  • Temperature Range : -40 to 90 deg.C.
  • Media : Any Liquid Services
  • Material : Body & Cover : ASTMA 216 Gr. WCB & Alloy Steel
  • Max. Inlet Pressure : 300 PSIG
  • Max. Outlet Pressure : 0 to 150 PSIG

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Pressure Reducing Valve
Pressure Reducing/Sustaining Valve-303

The Series 300 & 400 consists of the particular range of pressure reducing valve. The valve's name itself narrates function. The valve automatically reduces a higher inlet pressure to a steady outlet pressure to a steady lower downstream pressure regardless of changing flow parameter and fluctuations in upstream. A solenoid valve is provided to intercept the operation of the pressure reducing control.

Specifications

  • Pressure Class : 150 & 300 #
  • Temperature Range : -40 to 90 deg.C.
  • Media : Any Liquid Services
  • Material : Body & Cover : ASTMA 216 Gr. WCB & Alloy SteelG

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Pressure Reducing Valve
Remote Air Operated PRV- 45

Technical Specification

Inlet Body Size 1/4", 3/8", 1/2", 3/4", 1", 11/2", 2" NPT/BSP
Body C.S./Brass/Alloy Steel
Diaphragms Seats Neoprene/Buna-N/302 ST. ST. Standard Metal
Trims S.S./Brass
Inlet Pressure 0 to 500 psig
Outlet Pressure 0 to 300 psig

Loading pressure - either air or inert gas - is applied to tge tope of the diaphragm by the loader to open the main valve against the valves spring and inlet pressure. After the valve is open, more loading pressure is applied to the top of the diaphragm to keep the valve open while building up the desired reduced pressure under the diaphragm and to restore equilibrium under flow conditions. Reduced pressure from the down stream piping system is applied to the bottom of the metal diaphragm through an external impulse line.

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Pressure Reducing Valve
Pressure Reducing Valve-400

Technical Specification

Body Size 3/8", 1/2"3/4" 1" (Dn 10, 15, 20, 25)
End Connections Standard - NPT/BSP Female
Orifice Up to 3.6 Cv
Body Material CS/SS

The model PRV 400 is Nutech's primary general service, self-contained, pressure, reducing, regulator. Unit handles inlet pressure up to 400 psig (27.6 barg) and outlet pressures from 2-250 psig (O.14-17.2 barg) in multiple spring ranges. Model PRV 400 is utilized for the majority of industrial pressure reducing applications.

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Pressure Reducing Valve
Pressure Reducing Valve – 468

Technical Specification

End Connection Screwed 1/2", 3/4", 1", 1.5"
Inlet Max 300 PSIG
Spring Ranges 2-10 psi, 5-20 psi, 5-35 psi, 15-35 psi, 50-100 psi, 100-150 psi
Media Air / Gas / Liquid
Body Material ASTMA 216 Gr. WCB & Alloy Steel

Accurately Determine :

  • Reduced pressure
  • Inlet Pressure
  • Allowable change in reduced pressure from maximum to minimum flow, psi maximum required flow
  • Subtract the reduced pressure from the inlet pressure

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Pressure Reducing Valve
Pressure Reducing Valve – 469

Technical Specification

Application Air/Liquid/Gas/Steam
Valve Size 1" to 6", 150# to 300#
Inlet Pressure-Min/Max 10 PSI / 300 PSI
Outlet Pressure-Min/Max 5 PSI / 100 PSI
Temperature Range 150 F
Temperature Range 150 F
Body Material C.S./Alloy Steel/Brass
Trim S.S. 316/304/Brass

Valve Function

Inlet pressure acta upward on small balancing diaphragm (or piston in 21/2-3" sizes) to equalize downward pressure on valve disc, providing fully balanced action. Inlet pressure variations are equalized without affecting set-point. When the adjusting spring is compressed, it opens the main valve to admit fluid to down stream side. When the downstream pressure under the large diaphragm equals the force exerted by the adjusting spring, equilibrium is restored and the main valve maintains flow of the set down stream pressure. Simply designed, your Nu-Tech hi-flow is slated for a long, trouble-free life. Standard renewable parts never need special fitting or machining. Here's a rugged regulator built to absorb hydraulic system shocks that upset ordinary valves.

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Pressure Reducing Valve
Pressure Reducing Valve S-470

Technical Specification

Valve Size 1/2" to 10"
Rating 150# to 900#
Inlet Pressure 25 to 1500 PSIG
Outlet Pressure 0 to 600 PSIG
Application Air/Gas/Steam/Liquid
Material Body : C.S. & Alloy Steel, Trim-304, 316
  • Single Seated : Closing with inlet pressure for positive, dead-end, shut-off
  • Accuracy of Regulation : Comparable to instrument control with full flow for equivalent pipe
  • New type piston with Teflon+Seal : For temperature up to 500 F. Give continuous wiping action keeping liner clean, improving operating reliability and reducing maintenance. Piston rings can be furnished for temperatures over 500 F.
  • Fully Guided main valve : Prevents rubbing or binding of internal parts
  • Gradual opening ported main valve : In sizes 2 1/2" and larger for improved throttling control under low flow conditions.
  • Sensitive stainless steel diaphragm : Responds instantly to any flow change and eliminates stuffing boxes and bellows seals. Full travel less than its own thickness stress to a minimum.
  • Renewable Interchangeable parts : Machined to close tolerance; complete overhaul without machining or removing valve body from the line.

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Pressure Reducing Valve
Pressure Reducing Valve for Gas Service LP-122

Technical Specification

Valve Size 1", 1 1/4", 1 1/2", 2", 2 1/2" screwed/Flenged end
Outlet Pressure 1 1/2" W. C. to 2 PSI
Diaphragm Case Die Cast Aluminum / CS / SS
inlet Pressure 15 PSI
Body Material C.S./CF8/CF8M
Spring Color coated spring steel material
  • Double Acting Vent Damper : Assure fast response plus stable operation.
  • Internal Control Tube : Engineered for accurate pressure control.
  • Removable orifice : Precision knife-edge plus molded soft seats assure positive tight shutoff orifice in 3/4", 1" and 1 1/4"

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