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Super Quality Certificated Parts Flow Control Valve Hydraulic Surge Anticipating Valve Flow Control Valve

China Super Quality Certificated Parts Flow Control Valve Hydraulic Surge Anticipating Valve Flow Control Valve, Find details about China Flow Control Valve, Hydraulic Control Valve from Super Quality Certificated Parts Flow Control Valve Hydraulic Surge Anticipating Valve Flow Control Valve

Material
Alloy
Type
Sleeve
Size
DN50~DN600
Trademark
HUIZHENG
Transport Package
Wooden Case
Specification
DN50~DN600
Origin
China
HS Code
8481804090
Material
Alloy
Type
Sleeve
Size
DN50~DN600
Trademark
HUIZHENG
Transport Package
Wooden Case
Specification
DN50~DN600
Origin
China
HS Code
8481804090

Super Quality Certificated Parts Flow Control Valve Hydraulic Surge Anticipating Valve Flow Control Valve
01.Description
Surge Anticipating Valve is indispensable for protecting pumps, pumping equipment and all applicable pipelines from dangerous pressure surges caused by rapid changes of flow velocity within a pipeline. When a power failure take place, the abrupt stopping the pump can cause dangerous surges in the system which could result in severe equipment damage. Power failure to a pump will usually result in a down surge in pressure, followed by an up surge in pressure. The surge control valve opens on the initial low pressure wave, diverting the returning high pressure wave from the system. In effect, the valve has anticipated the returning high pressure wave and is open to dissipate the damage causing surge. The valve will then close slowly without generating any shock.
02.Main parts&material
No.PartMaterialChina stardard
1bodyDuctile ironEN-JS1040
2Seat ringStainless steelAISI 304
3O-ringRubberNBR
4O-ringRubberNBR
5Screw boltStainless steelA2
6GasketStainless steelA2
7bonnetDuctile ironEN-JS1040
8Shaft SleeveLead BrassCZ 122
9SpringStainless steelAISI 304
10NutStainless steelA2
11DiaphragmRubberNBR
12Diaphragm pressure plateDuctile ironEN-JS1040
13Hinge PinStainless steelAISI 304
14YokeDuctile ironEN-JS1040
15Seal RingRubberNBR
16Guide plateStainless steelAISI 304
17StemStainless steelAISI 304
I8PlugStainless steelAISI 304

03.Features
001.The diaphragm assembly provides long life and reliability with a stem guided by both top and seat rings.
002.All cast iron parts are coated with split epoxy resin to resist corrosion.
003.During maintenance, the main valve does not need to be removed from the pipeline and can be repaired directly on line.
004.The alignment of valve body allows for better control characteristics and lower head loss.
005.Ductile iron body has high strength and light weight.
006.Reinforced nylon diaphragm, film thickness uniform high strength, good precision, durable.
007.Internal use of stainless steel seat, guide platen and shaft, durable.
008.Good closing effect, zero leakage safety.
009.Hydraulic operation does not need external power, can cooperate with the need to match different guide valves and accessories as opening and closing or adjust the water level, pressure and flow.

04.Dimensions
DN LBHDPN10PN16PN25N.W. kg
5023017323285 4-019 14
65290197259954-0194-0198-01919
803102242791028-0198-0198-01923
1003502653051208-0198-0198-02332
1504803524451528-0238-0238-02868
2006004365691828-02312-02312-028112
25073051861121212-02312-02812-031178
30085060065924212-02312-02816-031225
DNLØDØK  HN-Ød
PN10PN16PN25PN10PN16PN25PN10PN16PN25
400110056558062051552555081316-02816-03116-037
450110061564067056558560081320-02820-03120-037
5CO125067071573062065066096720-02820-03420-037
6CO1450780840845725770770114020-03120-03720-040
7001450895910960840840875114024-03124-03724-043

05.Execution standard
Design standardCJ/T219, JB/T10674
Connection standardGB/T17241.6
Face spacing standardGB/T12221
Inspection testing standardGB/T13927

06.Technical parameters
Nominal diameterDN50~DN600(2"~24") PN10
DN50~DN600(2"~24") PN16
DN50~DN200(2"~8") PN25
Nominal pressure0.1MPa-0.8MPa
0.8MPa-1.3MPa
1.3MPa-2.0MPa
Operating temperature-10°C~85°C
Seal test1.1PN
Shell test1.5PN
Suitable mediumWater

07.Operating principle
Fluctuations when the pipeline pressure in normal circumstances, sampling valve tube after Y type filter to wave the upper valve diaphragm, a buffer holes due to the lower part of the diaphragm valve and valve body are interlinked, diaphragm valve at this time due to the fluctuation of pressure equal to there is no pressure difference and fluctuation valve close on lower part of the diaphragm spring force, when the sudden rise in pressure in pipe, rises high, lower part of high pressure pilot valve diaphragm pressure lifts suddenly, when the pressure rises to more than low pressure pilot valve spring pressure, high pressure pilot valve to open, will wave valve diaphragm upper water leakage, pressure fluctuation after the upper valve diaphragm pressure relief to the diaphragm valve spring force to overcome fluctuations, fluctuation valve open, high pressure pilot valve opens,Pressure water relief into the low-pressure guide valve, the low-pressure guide valve due to the spring force will open the low-pressure guide valve, further drain the pressure fluctuation valve diaphragm on the cavity of the water, so that the pressure fluctuation valve as soon as possible to open.When the water pressure in the pipeline falls, the water in the lower part of the high-pressure guide valve diaphragm is not enough to overcome the spring force on the low-pressure guide valve, the high-pressure guide valve closes, the low-pressure guide valve also closes, at this time the upper part of the fluctuation valve diaphragm is full of water, there is no pressure difference on the lower part of the fluctuation valve diaphragm, the fluctuation valve closes the fluctuation valve by the action of the spring force.Since the lower chamber is connected to the pressure in the valve body through a fixed hole, the closing of the valve is cushioned.

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Super Quality Certificated Parts Flow Control Valve Hydraulic Surge Anticipating Valve Flow Control Valve
Super Quality Certificated Parts Flow Control Valve Hydraulic Surge Anticipating Valve Flow Control Valve

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