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Elite Line Industrial Corp.
DIRECT-ACTIVATED PRESSURE SUSTAINING | BACK PRESSURE VALVE

DIRECT-ACTIVATED PRESSURE SUSTAINING | BACK PRESSURE VALVE

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DIRECT-ACTIVATED PRESSURE SUSTAINING | BACK PRESSURE VALVE

Product catalog summary

Specifications:

The valve is constructed entirely from stainless steel #316, suitable for pure water, acidic and alkaline fluids, steam, or air.
Pressure required to move from fully closed to fully open is 1.5 kgf/cm² (equivalent to 14.2 psi).
Pressure adjusting range is between 1-5 kgf/cm² and 4-10 kgf/cm².
Applicable temperature ranges from -15°C to 100°C, and up to 180°C for steam.
Valve body testing pressure is 35 kgf/cm², with a maximum applied pressure of 25 kgf/cm².

Design Features:

The piston and diaphragm design enhances pressure sustainability and reduces leakage.
The back pressure chamber allows quick response and accurate pressure adjustments.
A pressure gauge indicates the sustaining pressure.
Steam pipelines should be covered with thermal materials.

Material Composition:

Key components such as the gauge, upper cover, main body, shaft, seat, and lower cover are made from stainless steel 316.
Sealing components like O-rings and U-rings are made from NBR, Viton, or Teflon.
Diaphragms are made from CR, EPDM, or Viton.

Valve Dimensions and Specifications:

Valves are available in various sizes, with specific dimensions and weights provided for each model.
Flow coefficients (CV) are listed for each valve size, indicating the flow capacity.

Functionality:

Back Pressure (Sustaining) Valve: Installed in branch pipes to maintain stable fluid pressure. It releases excess pressure automatically when it exceeds the set value.
Pressure Relief Valve: Opens quickly to release pressure when it exceeds the set value and closes slowly as pressure decreases.

Applications:

In systems with varying pressure, back pressure valves maintain required pressure and ensure equipment safety after pressure reduction.
They enable maximum flow application and stabilize pipeline pressure.

Flow Chart:

A flow chart is provided to illustrate the relationship between flow rate and pressure drop across the valve.

Catalog excerpts

DIRECT-ACTIVATED PRESSURE SUSTAINING | BACK PRESSURE VALVE-1

DIRECT-ACTIVATED PRESSURE SUSTAINING | BACK PRESSURE VALVE » The whole set is made by stainless steel #316, and it is suitable for the fluid of pure water, acid & alkaline fluid, steam or air. Pressure needed from fully-closed gate to fully-opened gate: 1.5 kgfiem®, » Back pressure valve can maintain required pressure. » Design of piston and diaphragm improves the inabilityof sustaining pressure and leakage. » Back pressure chamber controls the valve gate and let gate respond, quickly and adjust pressure P Pressure Adjusting Range © 1~5 kgf/cm’ » Applied Temperature ©: -15~100°C 100~ 180°C (For steam) » Valve Body Testing Pressure : 35 kgf/cm’ » Maximum Applied Pressure : 25kgffcm® » Pressure gauge indicates the sustaining pressure. » Please cover steam pipelines with thermal materials No Part Name Gauge Upper Cover Q-ring Main Body Stainless Steel Stainless Steel 316 NBR / Viton ‘Stainless Steel 316 Sealing Spacer Fixed Bolt Lower Cover Spring Steel ‘Stainless Steel Stainless Steel 304 (Thread End) Item No | Size |H(mm) | L(mm) | Weight(kg) [ CV RFT15-5 | 12" Item No | Size |H(mm) | L(mm) [Weight(kg) | CV RFF15-8

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DIRECT-ACTIVATED PRESSURE SUSTAINING | BACK PRESSURE VALVE-2

» Back Pressure (Sustaining) Valve: It's installed in branch pipe to maintain the stable pressure of fluid inside pipe. When pressure exceeds setting valve, it will automatically release over high pressure. » Pressure Relief Valve: It's installed in branch pipe. When pressure exceeds setting valve, valve gate will quickly and fully open to release pressure. As pipeline pressure goes down to certain level, valve gate will close slowly. » Applied condition of Back Pressure Valve: Example 1 Back Pressure Valve Pressure Reducing Valve = System 1 Back Pressure Water Tank — Reducing Valve ©In different...

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