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LZ300X Water Power Control Slow Closing Check Valve

LZ300X Water Power Control Slow Closing Check Valve

LZ300X Water Power Control Slow Closing Check Valve
CategoriesHydraulic control valve
AlbumView larger image
BrandGARLOS
ModelLZ300X
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℃
Update Time2018-10-19
Detail Information

Brief Introduction


LZ300X Slow Closing Check Valve is composed of main valve, single way valve, needle valve, ball valve, pressure gauge and tube system. Slow closing check valve is installed at the pump exit of high-rise building water supply system and other water supply system. The valve have the functions from electric valve, check valve and water-hammer arrestor, can enhance the safety and reliability of water supply system, and integrate technology of slow opening, fast closing, slowing closing to eliminate water hammer. Simply operate the pump motor button, valve can automatically open and close in accordance with the pump, high flow rate, low pressure loss.


Working Principle


When valve started to supply water from inlet, water flows into main valve control room via needle adjust valve and single way check valve, then drain to downstream via ball valve. Open degree of needle valve is smaller than ball valve, which means main valve control room draining speed is higher than inflow speed, the pressure of control valve will drop, the pressure on disc bottom will open main valve and drain to downstream. When pipe stopped water supply, if the water of downstream flows back, a part of water will flows into main valve control room via ball valve, and because of the single way check valve, it will not flow out of control room, which leads the control room pressure increasing, closing main valve slowly.



Parameters


Nominal

Pressure

Shell Test

Pressure

Seal Test

Pressure

Slow Closing Time

Suitable

Medium

Medium

Temperature

1.0 MPa

1.5 MPa

1.1 MPa

3-60S Adjustable

Water

0-80

1.6 MPa

2.4 MPa

1.76 MPa

2.5 MPa

3.75 MPa

2.75 MPa




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


 

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