JD745X Multifunctional Pump Control Valve

Group Hydraulic control valve
Min. Order 1 piece
Terms of Payment all
Update Time 2017-06-14
Item specifics
Nominal Pressure1.0/1.6/2.5MPa
Shell Test Pressure1.5/2.4/3.75MPa
Seal Test Pressure1.1/1.76/2.75MPa
Suitable MediumWater
Medium Temperature0-80℃
Description

Brief Introduction


JD745X multi-function pump control valve isinstalled in high-rise building water supply systems and other water supplysystem pump outlet, to prevent the medium backflow, water hammer. The valve combines electric valve, check valve and water hammereliminator three functions, can effectively improve water supply systemsecurity and reliability. And integrates slow opening, fast closing, slowclosure of water hammer eliminating technical principles, to prevent the pump openingwater hammer and pump stop water hammer. Just operate the pump motor open andclose button, the valve can automatically open and close in accordance withpump operating procedures, the flow is large, pressure loss is small.


Working Principle


When the pump starts, the water pressure workson the main valve disc lower part and control chamber lower part, the pressure opensthe main valve, the water of upper control room flows slowly to the outlet throughthe adjusting valve, the main valve opens slowly. Set the opening of thecontrol valve to get the appropriate main valve opening speed. When the pumpstops working, the water pressure at the inlet drops rapidly and closes most ofthe opening rapidly under the action of self-weight and spring pressure toprevent the backflow of water. The remaining opening is controlled by thepressure in the upper chamber of the control room and the water pressure in thelower chamber. Closing speed is slow down to form a buffer to prevent thepressure surge.


Features


1, Water hammer preventing effect is good, integrated slow opening, check and fast closing, slowing closing technology, to prevent pump open water hammer and pump stop water hammer .
2, Easy to operate, no need of electric control system. The valve completes the control function in accordance with the pump opening and closing.
3, The valve body is designed with a full flow diameter, straight flow, streamlined appearance. Pressure loss is small, energy-saving effect is good.


Parameters



Nominal Pressure

Shell Test Pressure

Seal Test Pressure

Slow Closing Time

Minimum

Action Pressure

Suitable Medium

Medium Temperature

1.0MPa

1.5MPa

1.1MPa

3-90 s

Adjustable

0.07MPa

Water

0-80

1.6MPa

2.4MPa

1.76MPa

2.5MPa

3.75MPa

2.75MPa



Material



Part Name

Material

Valve Cap

Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.

Spring

Spring steel, Stainless steel, etc.

Diaphragm depressor

Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.

Diaphragm

NBR, PTFE, etc.

Valve Rod

45# steel, Stainless steel 2Cr13, 1Cr18Ni9Ti, etc.

Valve Platen

Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.

Sealing Ring

NBR, PTFE, etc.

Sealing Ring Platen

Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.

Valve Seat

Copper alloy, Stainless Steel

Valve Body

Gray cast iron, Ductile iron, Carbon steel, Stainless steel, etc.



Installation




Dimension