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Pressure Reducing Valve

Location:
Hangzhou, China ( Mainland)
Status:
New
Sample Availibility:
yes
Payment Terms:
Cash, Bank Transfer, Letter of Credit, T/T, L/C
Categories:
Home > Industrial Supplies > Valves

Product Description

Part NameMaterial
Body, BonnetWCB(ZG230-450), WCC(ZG270-500), WC6(ZG15CrMo), CF8(304), CF8M(316), CF3(304L), CF3M(316L)
Plug, Seat304(0Cr18Ni9), 316(0Cr17Ni12Mo2), 316L(00Cr17Ni14Mo2), 17-4PH
Packing PTFE, R.TFE, Grafoil
Sealing RingXB350, PTFE
Diaphragm CoverA3, 304
Bellows Diaphragm pieceAcrylonitrile-butadiene Rubber
Spring60Si2Mn 50CrVA
Stem304 316 316L 17-4PH
Nominal Diameter DN253240506580100125150200
Rate Flow CoefficientLinear12.519.530.548.476125195305484760
Equal-Percent1117.627.54469110176275440690
Rate Travel16254060
Diaphragm Piece Effective Area(CM2)2804006001000
Nominal Diameter DN250300350400
Rate Flow CoefficientLinear1100176027504400
Equal-Percent1000160025004000
Rate Travel100100100100
Diaphragm Piece Effective Area(CM2)1600
Nominal Pressure(Mpa)Mpa1.6, 2.5, 4.0, 6.4(6.3)/2.0, 5.0, 11.0
Bar16, 25, 40, 64(63)/20, 50, 110
LbANSI: Class150, Class300, Class600
Inherent Flow CharacteristicEqual-Percentage-first option, linear-less option
Inherent Adjust Rate50
Spring Signal Rang(Kpa)20~100, 40~200, 80~240, (20~60, 60~100)
Air Pressure(Mpa)0.14/0.25/0.3/0.4
Allowable LeakageANSI B16.104 Class IV
TemperatureNormal Temp-20~200, -40~250, -60~250
Radiator-40~450, -60~450
High Temp450~650 High Temperature Material
Low TempD0:-60~-100, D1:-100~-200, D2:-200~-250
Adjusting & Stopping-40~150 (PTFE- PTFE), -60~200 (PTFE-Reinforced PTFE)

Products Show:

HZVALVE Control Valves are Working At Site:

Structure Selection:

SINGLE SEAT CONTROL VALVE
The structure of the single seat control valve series is the simplest among all the kinds of control valves, with the accurate flow characteristic, lightest weight and most widely usage. The advantages of this series valves has least leakage, and less pressure reduction losses than the cage and double seat control valves. If the allowable pressure is available, the single seat control valves shall be the first option compare to the cage or double seat kinds.

FEATURES:

1.Compare to other kinds valves, the single seat valve usually has the bigger unbalanced force (Ft) when it closed, so the matched actuator must have the enough output force, if the working condition is beyond the allowable pressure, do not choose the single seat valves as possible.
2.As for the single seat control valves with the bigger diameter, the unbalanced force and cost shall be calculated, because the unbalanced force, increases, the cost of the actuator will increases accordingly.
3.When the flow is big (exceed the Kv of the single seat control valve), then this series is not available any more.
4.Sometimes, the output force of actuators (especially the pneumatic actuator) from every factory is different.

DOUBLE SEAT CONTROL VALVE
There are two units’ seat, plugs and sealing surface in the normal type double seat control valves, while as for the cage type, it also has two units sealing surface, but it only has one plug. Because of the two flow channel, so the flow capacity (flow efficiency Kv) of the double seat control valves are bigger than the single seat type, but the leakage grade is lower than the single seat type, it is usually grade II, at most grade III.
1.Forbid to choose the double seat control valves for the conditions of small opening and small flow capacity.
2.If the single seat type or cage type is available for the working condition, do not choose the double seat control valves.
3.As for the control valve with the diameter DN is bigger than 250mm, choose the rotatory valve ( V-shaped ball valve, butterfly valves, eccentric valves) to replace the double seat control valves if possible, otherwise there is a requirement of precise flow characteristic.
4.There is big leakage for the double seat control valve, consider cautiously before opting.
CAGE TYPE CONTROL VALVE
The structure of the cage type control valve series is the relative simpler among all the kinds of control valves with the accurate flow characteristic. Besides the single seat control valve, the cage type control valve is secondly most used among all the kinds of control valves. It plays an important role in the nine kinds control valves types, in one project, the quantity of the cage type valves some time will exceeds 60% among all the control valves.
1.Because of the balanced plug, this series valves are able to bear big differential pressure, while the matched output force from the actuator is relatively small.
2.Because of the balanced plug, this series valve can be operated stably without frequent vibration.
3.The windows on the cage are deployed symmetrically, the total flow kinetic energy consumes in the core of the cage, so the other inside partare not easy to be damaged, then the noise is lower, the working life is longer.
4.The windows on the cage can be made to meet different flow characteristic according to the working requirement, so the valves with same diameter are able to meet many different requirement of flow capacity CV.
SELF-OPERATED REGULATOR
The self-operated pressure regulator is a kind which does not need outside power but take advantage of the power from medium to act and adjust by itself. The most notable feature of this series regulator is that it can be used in the working place without the electricity and gas supplying, which saves the power at the same time. In the specific range, the pressure setting can be adjusted at will.So it can be widely used in many fields like petroleum, chemical,electricity, metallurgy, food, textile, machinery and civilian building and so on to reduce/release or stabilize the pressure of the gas, steam and liquid and so on.

Company Overview

Contact Us

HANGZHOU WORLDWIDES VALVE CO, LTD.
Add: No.34 Eastxianlin Road, Hangzhou, China.
TEL: 0086-1358-8703684
FAX: 0086-571-88681498
Web: en.hangzhou-valve.com
Skype: steven-hzvalve



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Contact Information

Company:
 Hangzhou Worldwides Valve Co., Ltd.
Phone Number:
  86-571-88686524,13588703684
Fax Number:
 86-571-88686524
 
Hangzhou Worldwides Valve Co., Ltd.
 Zhejiang , China FREE
 

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