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SP 439 Self-Operated Micro-Pressure Regulating Valve Manufacturer

SP439 Pressure regulating valve is a sping-driven micro-pressure regulating valve and can reduce and stabilize high-pressure gas to the extreme low pressure.lt is only used for downstream pressure control.It is also used formicro-pressure control of different gases.Especialy apply to the nitrogen blanketing system.The minimum control pressure is 0.3KPa.The maximum control pressure is 15KPa The minimum operation temperatureis 48℃ rhemaximumoperationtemperatureis 120℃
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  • SP 439

SP439 Pressure regulating valve is a sping-driven micro-pressure regulating valve and can reduce and stabilize high-pressure gas to the extreme low pressure.lt is only used for downstream pressure control.It is also used formicro-pressure control of different gases.Especialy apply to the nitrogen blanketing system.The minimum control pressure is 0.3KPa.The maximum control pressure is 15KPa The minimum operation temperatureis 48℃ rhemaximumoperationtemperatureis 120℃.

self-operated control valve


regulating valve part list

SN NAME OF PART MATERIAL
1 Connecting Set 304SS, 316L
2 Pin 304SS, 316L
3 Connecting Rod 304SS, 316L
4 Spring 304SS, 316L
5 Screw Set 304SS, 316L
6 End Cover CF8,CF3M
7 Connecting Bolt 304SS, 316L
8 Pin 304SS, 316L
9 Washer PTFE, 316L
10 Bottom Pin 304SS, 316L
11 Lever 304SS, 316L
12 Shaft Set 304SS, 316L
13 Guide Bush 304SS, 316L
14 Block Ring 304SS
15 Flange CF8
16 Bonnet CF8,CF3M
17 Spring 304SS, 316L
18 Spring Seat 304SS, 316L
19 Spring Stem 304SS, 316L
20 Spring Seat 304SS, 316L
21 Sealing Ring of Bonnet 316SS+Graphite, 316L+Graphite, 316L+PTFE
22 Cage CF8,CF3M,304SS,316L
23 Valve Plug 304SS, 316L
24 Pin 304SS, 316L
25 Valve Cushion NBR,FKM,SR,PTFE
26 Valve Seat 304SS, 316L
27 Sealing Ring of Valve Seat 316SS+Graphite, 316L+Graphite, 316L+PTFE
28 Body WCB,CF8,CF3M
29 Protective Cover 304SS
30 Arrow 304SS
31 Screw 304SS
32 Washer PTFE
33 Nut Hpb59-1
34 Spring Cover CF8
35 Block Ring 304SS
36 Pin 304SS
37 O-Ring NBR
38 Setting Spring 304SS
39 Diaphragm Case 304SS, 316L
40 Spring Seat 304SS
41 Diaphragm Plate LY12
42 Diaphragm NBR,FKM,SR,EPDM
43 Diaphragm Case 304SS, 316L
B01 Socket Head Screw 304SS, 316L
B02 O-Ring NBR,FKM,SR
B03 O-Ring NBR,FKM,SR
B04 Socket Head Screw 304SS
B05 O-Ring NBR,FKM,SR
B06 O-Ring NBR,FKM,SR
B07 O-Ring NBR,FKM,SR
B08 O-Ring NBR,FKM,SR
B09 Socket Head Screw 304SS
B10 Socket Head Screw 304SS
B11 Circlip 304SS
B12 O-Ring NBR
B13 Socket Head Screw 304SS
B14 Hex Bolts 304SS
B15 Hex Nut 304SS
B16 Hex Nut 304SS
B17 Spring Washer 304SS
annex of SP 439 control valve


NAMESTANDARD
Body Size(Flanged connection)DN15(1/2"),DN20(3/4"),DN25(1"),DN40(11/2°),DN50(2")
Pressure RatingPN16,40,64 ANSI150LB,300LB,600LB (Can also be customized)
Flow FactorDiameter of valve seat24681O12121822
KV0.10.30.611.62.54.56.510
Remark:maximum 4.5 KV is allow for DN15,the diameter is other not limited for types
Feedback InterfaceG1/4'10mm card set of connector is provided in the plant.
Pressure Measuring MethodMeasured at inside of the valve or fang and or outside.Applied to the tank nitrogen blanketing,measuring from top of tank
Leakage Classsoft-sealing
Losing Class<10% of upper limit of reguation range.
Operation Temperature
(This is soft-sealing valves, the temperature depends n the material of the sealing part and diaphragm.)
NBR-29-82℃
FKM-8-120℃
SR-48-85℃
EPDM-38-115℃
Flow CharacteristicsL(Normal)
EQ%(Secical processing)


  • Compact structure

    The embedded sping structure makes the pressure reguating valve more compact and well protected.

  • No Packing

    Any frction resistance will affect the control precsion of the pressure reguating valve at the micro pressure control.SP439 pressure regulating valve without packing makes the regulating mechanism have highly sensitive and reduces leakage point.

  • Ampify Push Force

    The control pressure is very Iow of the micro-pressure control valve,so the actuator generatesirited push force.The lever force-ampifcation regulation device of the pressure reguating valve can ampify the micro push force of the diaphragm assembly by 6 times, so this pressure regulating valve provides excellent reguating and difference pressure withstanding peformance.When the downstream system flow reduce to "0",the valve plug will shut off the flow at the micro-pressure state and hold the system pressure.

  • Overload Safety

    To reduce the influence of the parts gravity for control pressure. The whole regulating device of the pressure regulating valve should be designed as light and precise as far as possible.The downstream pressure is very low during normal operation. The force on the regulating device is verysmall. The overload is unavoidable in actual operation. The downstream pressure can reach the upstreampressure at abnormal state. At this time, the push force generated by the diaphragm assembly is verydestructive to the regulation device.The overload device of the pressure regulating  valve can effectivelyuninstall the overload force and avoid damage to the regulation device. Namely when the pressure regulatingvalve is operating, in most case, the diaghragm case of the actuator can fully withstand the maximumoperation pressure of upstream and it will not be damaged.

  • Easy Pressure Regulation

    The screw regulating device can realize easy, convenient and quickpressure regulation.

  • Soft Sealing

    The valve plug designed as soft sealing structure and can easily shut off the flow.

  • Stainless Actuator

    As an important part of the reguator, the actuator is made of stainless plateto ensure its high pressure-strength and long service life.

  • Easy Installation

    The direction of pipeline and installation space can not be estimated when thevalve is outputted. it is not convenient to calibrate and watch the pressure regulating valve dueto influences from the surrounding devices after installation. The actuator and regulation device ofthe SP439 pressure regulating valve can rotate by 360° under non-disassembled state and old performance parameters are not affected after adjustment.

  • Easy Maintenance

    The selection criteria of the every structure ofthe SP439 regulator is to make surethe most convenient installation and maintenance while ensuring the performance reguirements are met.

    The top-mounted push-down installation method allows you to inspect and maintain the internal partswithout any special tools before disassembling the regulator.

    The bonnet central alignment method is adopted to avoid all unnecessary repeat matching operation.

    The internal part has sufficient clearance to make sure itself can be easity taken out or put in.

  • Universal Parts

    SP439 regulator has estremely high parts universality with the wholeself-operated products series manufactured by our company, it helps to reduce the inventory of spare parts.


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 Add: 1-1-421, East Asia Capital International Airport, Shunyi District, Beijing
 +86-18611864848
 +86-18611864848

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