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LZ400X Multi-function high-precision pilot operated flow control valves

LZ400X Multi-function high-precision pilot operated flow control valves

LZ400X Multi-function high-precision pilot operated flow control valves
CategoriesHydraulic control valve
AlbumView larger image
BrandGARLOS
ModelLZ400X
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 Time2019-07-21
Detail Information

Brief Introduction


LZ400X flow control valve is a high-precision pilot control type multi function flow control valve. Widely used in high-rise buildings, living quarters and other water supply systems. Suitable for water distribution pipes which need to control the flow and pressure, to maintain a predetermined constant flow rate, flow rate will be limited in a predetermined value, and appropriately reduce upstream high pressure, even if the main valve upstream pressure changes, it will not affect flow of main valve downstream .


This valve is different from regular throttle valves which use plates or purely mechanically reduce  drainage area, it uses relevant pilot valve to minimize energy loss in the throttling process, no other devices and energy needed, maintenance is simple, flow control is steady, in case of emergency, the flow control valve can completely cut off the flow, to avoid losses. High control sensitivity, safe, reliable, easy adjustment, long service life.


Working Principle


When valve supply water from inlet, water flows into control room via needle valve, and be discharged from control room to outlet via pilot valve and ball valve, and at this time the main valve is fully open or floating state.


Setting the flow adjusting valve at the up part of main valve, could set certain open degree for main valve. Adjusting needle valve open degree and pilot spring pressure, could make the main valve keeping setting open degree, and when flow changes, pilot valve will adjust automatically to maintain flow rate



Parameters

Nominal

Pressure

Shell Test

Pressure

Seal Test

Pressure

Pressure

Adjust

Range

Pressure

Specification

Flow Rate

Specification

Medium

Medium

Temp.

1.0 MPa

1.5 MPa

1.1 MPa

0.09-0.8MPa

P2*8%

P2*15%

Water

0-80

1.6 MPa

2.4 MPa

1.76 MPa

0.10-1.2MPa

P2*10%

P2*20%

2.5 MPa

3.75 MPa

2.75 MPa

0.15-1.6MPa

P2*12%

P2*25%










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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