Piston pressure reducing valve

Brand:GOOLE

Description:Brief Introduction. This series pressure reducing valve is a new type regulating valve which adopts piston to replace the diaphragm. The performance is reliable and it's can be used for a long time. The down pressure can be adjusted according to the requirement, and it can be set at a fixed pressure in the application, which won't be changed as the fluctuation of the up pressure and the flowing rate. Field of Application. Pressure Rating: 1.0- 6.4Mpa Nominal Diameter: DN20-400 Body Material: Steel, CF8 Standard flanges: DIN, ANSI, JIS.

Product detail: Brief Introduction.

 
This series pressure reducing valve is a new type regulating valve which adopts piston to replac the diaphragm. The performance is reliable and it's can be used for a long time. The down pressure can be adjusted according to the requirement, and it can be set at a fixed pressure in the application, which won't be changed as the fluctuation of the up pressure and the flowing rate.
 
Field of Application.

 

Pressure Rating: 1.0- 6.4Mpa
Nominal Diameter: DN20-400
Body Material: Steel, CF8
Standard flanges: DIN, ANSI, JIS.
 
Main Technical Parameters and Indexes of Performance.

 

Nominal pressure	PN1.6Mpa	PN2.5Mpa	PN4.0Mpa	PN6.4Mpa
Tested pressure of shell	2.4Mpa	3.75Mpa	6.0Mpa	9.6Mpa
Sealing test pressure	1.6Mpa	2.5Mpa	4.0Mpa	6.4Mpa
Maximum upstream pressure	1.6Mpa	2.5Mpa	4.0Mpa	6.4Mpa
Pressure range of outlet	0.2-1.0Mpa	0.2-1.6Mpa	0.2-2.5Mpa	0.5-3.5Mpa
Minimum differential pressure	0.2Mpa	0.2Mpa	0.2Mpa	0.4Mpa
Medium	Steam, water, etc.
Operating temperature	425

 

*the shell test does not include membrane and top cover.

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

Material of Main Component.

 

Name of component	Material of component
Valve body, valve cover, seat cover	Cast iron, Cast steel
Valve seat,	2Cr13
Valve flap	2Cr13
Valve rod	2Cr13
Cylinder sleeve	2Cr13 /25(hard chrome plating)
Piston	2Cr13
O-shaped ring	Ding nitrile rubber
Sealing encircles	Ding nitrile rubber
Adjusting valve	60Si2Mn

 
Main External Dimensions.

 

 

DN	External Dimension
	L			H				H1
	1.6/2.5 Mpa	4.0 Mpa	6.4 Mpa	1.6 Mpa	2.5 Mpa	4.0 Mpa	6.4 Mpa	1.6 Mpa	2.5 Mpa		4.0 Mpa		6.4 Mpa
20	160	160	170	220	220	220	220	90		90		90		90
25	180	200	200	255	255	265	265	95		95		100		105
32	200	220	220	255	255	265	265	100		100		100		110
40	220	240	240	325	325	330	330	115		115		130		130
50	250	270	270	325	325	330	330	120		120		135		135
65	260	280	300	330	330	340	355	125		125		140		145
80	310	330	330	340	340	340	340	135		135		150		160
100	350	380	380	347	347	360	360	148		148		185		185
125	400	450	450	560	560	565	565	190		200		200		245
150	450	500	500	580	580	585	585	205		210		240		280
200	500	560	560	630	630	635	635	220		245		245		310
250	600			750				270
300	800			780				310
350	850			850				390
400	900			925				420