Pilot Pistion Type Gas/Air/Oxygen/Nitrogen Pressure Reducing Valve/Wcb/304

• Customization: Available
• Certification: ISO, CE
• Temperature: Ordinary Temperature
• Model NO.: GAYK43F/H
• Connection: Flange
• Valve Seat: Single-Seat
• Structure: Piston
• Material: Cast Steel
• Transport Package: Plywood Case
• Trademark: GOOLE, OEM
• Origin: China(Mainland)
• HS Code: 8481804090

Product Description

Pilot Pistion Type Gas/Air/Oxygen/Nitrogen Pressure Reducing Valve/Wcb/304

Product Description

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.

Application

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 Material: Steel WCB,CF8.
Standard Flanges: DIN,ANSI,JIS.

Product Details

Material of Main Component.

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.
 

 

 

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

Product Parameters

Main Technical Parameters and Indexes of Performance.

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

 

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.
 

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