Pressure Reducing Valve

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Location: China Zhejiang
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Product Detail

Product detail: Brief Introduction.
 
This series reducing valve is pilot piston type reducing valve, mainly composed of main valve and pilot valve. The main valve consists of valve seat, main valve disc, piston, cylinder sleeve, and spring. The piston valve consists of valve seat, valve flap, membrane, spring and adjusting spring. Set the outlet pressure through adjusting spring, sense the change of pressure of outlet with membrane, adjust the flow area of throttling part of main valve through open and close of pilot valve and drive the piston, to realize the function of reducing and regulating valve. The product is mainly applied on gas piping, such as air, nitrogen, oxygen, hydrogen, liquefied gas, and natural gas.
 
Field of Application.
 
Product Name: Pilot Piston type Gas Pressure Reducing Valve.
Pressure Rating: 1.6- 16.0 Mpa.
Nominal Diameter: DN15-500 mm. 
Body MaterialSteel WCB,CF8.
Standard Flanges: DIN,ANSI,JIS.
 

Nominal pressure(Mpa) 1.6 2.5 4.0 6.4 10.0 16.0
Shell test(Mpa) 2.4 3.75 6.0 9.6 15.0 24.0
Sealing test(Mpa) 1.6 2.5 4.0 6.4 10.0 16.0
Max.inlet pressure(Mpa) 1.6 2.5 4.0 6.4 10.0 16.0
Range of outlet pressure(Mpa) 0.1-1.0 0.1-1.6 0.1-2.5 0.5-3.5 0.5-3.5 0.5-4.5
Min Differential Pressure 0.15 Mpa
Pressure characteristics derivation ΔP2P GB12246-1989
Flow characteristics derivation ΔP2G  GB12246-1989
Allowable Min Differential Pressure(Mpa) 0.15 0.15 0.2 0.4 0.8 1.0
Leakage Soft seal:0;hard seal:GB12245-1989

Flow Characteristics.
DN 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 500
Cv 1 2.5 4 6.5 9 16 25 36 64 100 140 250 400 570 780 1020 1500
 
Main Technical Parameters and Indexes oPerformance.
 
Nominal Pressure 1.6 Mpa 2.5 Mpa 4.0 Mpa 6.4 Mpa 10.0 Mpa 16.0 Mpa
Tested pressure of shell 2.4Mpa 3.75Mpa 6.0Mpa 9.6Mpa 15.0Mpa 24.0Mpa
Sealing test pressure 1.6Mpa 2.5Mpa 4.0Mpa 6.4Mpa 10.0Mpa 16.0Mpa
Maximum upstream pressure 1.6Mpa 2.5Mpa 4.0Mpa 6.4Mpa 10.0Mpa 16.0Mpa
Pressure range of outlet 0.1-1.0Mpa 0.1-1.6Mpa 0.1-2.5Mpa 0.5-3.5Mpa 0.5-3.5Mpa 0.5-4.5Mpa
Minimum differential pressure 0.15Mpa 0.15Mpa 0.2Mpa 0.4Mpa 0.8Mpa 1.0Mpa
Medium Gas, air, oxygen, nitrogen, etc.
Operating temperature 80

*the shell test does not include membrane and top cover.
 
Material of Main Component.

Pressure Reducing Valve for Gas (GAYK43F/H)
 
Name Of Component Material Of Component
Valve body, valve cover, seat cover WCB/FCB*
Valve seat, valve disc 2Cr13/304*
Cylinder sleeve 25 (hard chrome plating)/304*
Piston 2Cr13 /copper alloy*
Piston ring Alloy cast iron/ polyphenyl*
Pilot valve seat, pilot valve rod 2Cr13/304*
Membrane 1Cr19Ni9Ti
Spring of main valve and pilot valve 50CrVA
Adjusting valve 60Si2Mn
Sealing gasket (X/F model) Rubber/PTFE
Pilot valve body, pilot valve cover 25/304*
 
Main External Dimensions.
 
 Pressure Reducing Valve for Gas (GAYK43F/H)
 
DN External Dimension DN External Dimension
L H H1 L H H1
1.6/2.5Mpa 4.0 Mpa 6.4 Mpa 10.0/16.0 Mpa
15 160 180 290 90 15 180 180 300 100
20 160 180 300 98 20 180 200 310 105
25 180 200 300 110 25 200 220 310 120
32 200 220 300 110 32 220 230 310 120
40 220 240 320 125 40 240 240 335 135
50 250 270 320 125 50 270 300 335 135
65 280 300 325 130 65 300 340 340 140
80 310 330 365 160 80 330 360 380 170
100 350 380 365 170 100 380 380 185
125 400 450 475 200 125 450 490 215
150 450 500 475 210 150 500 490 225
200 500 550 515 240 200 550 535 260
250 650 560 290 250 650 580 310
300 800 705 335 300 800 725 355
350 850 745 375 350 850 765 395
400 900 780 405 400 900 800 435
450 900 730 455 450      
500 950 835 465 500 950 855 495

 
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