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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℃.


| 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 |
| NAME | STANDARD | |||||||||
| Body Size(Flanged connection) | DN15(1/2"),DN20(3/4"),DN25(1"),DN40(11/2°),DN50(2") | |||||||||
| Pressure Rating | PN16,40,64 ANSI150LB,300LB,600LB (Can also be customized) | |||||||||
| Flow Factor | Diameter of valve seat | 2 | 4 | 6 | 8 | 1O | 12 | 12 | 18 | 22 |
| KV | 0.1 | 0.3 | 0.6 | 1 | 1.6 | 2.5 | 4.5 | 6.5 | 10 | |
| Remark:maximum 4.5 KV is allow for DN15,the diameter is other not limited for types | ||||||||||
| Feedback Interface | G1/4'10mm card set of connector is provided in the plant. | |||||||||
| Pressure Measuring Method | Measured at inside of the valve or fang and or outside.Applied to the tank nitrogen blanketing,measuring from top of tank | |||||||||
| Leakage Class | soft-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 Characteristics | L(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.