Pressure Relief or Sustaining Valve (GA500X)

• Transport Package: Plywood Case
• Specification: ISO 9001
• Trademark: GOOLE, OEM
• Origin: China(Mainland)
• Model NO.: GA500X
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

Pressure Relief or Sustaining Valve (GA500X)

Product Description

The valve instantly opens when the pressure in the pipeline exceeds the preset safe level, thus relieving excessive pressure from the pipeline. When the pressure returns to normal, the valve closes slowly, at an adjustable speed.The valve also can be used to sustain upstream pressure to a preset pressure value.
 
The 500X pressure release/maintenance valve is mainly used in fire fighting or other water supply systems to prevent the occurrence of overpressureor maintain the pressure of a fire fighting water supplysystem. After the fire pump is shut down, the valve can also serve to reduce the impact caused by water hammer. It can also be used as the water hammer eliminating device in large water supply systems.The valve utilizes a self-cleaning screen installed at the inlet of the valve control system, so suspended particles of relatively big specific gravities and diameters can not enter the control system.This guarantees the smooth and unobstructed circulation of the system, thereby ensuring the safe and reliable operation of the valve. With the help of the valve, the system, suitable for 600 caliber or below pipes, is able to operate smoothly, high in strength and offer a long service life.

Working Principle

Pressure Relief or Sustaining Valve (GA500X) Working Principle:

1. Being Used as a Pressure Relief Valve

  When the pilot valve is on the status of relieving valve, water flows out through needle valve, main valve controlling chamber, ball valve A, pilot valve and Ball Valve B. Then the main valve is open. When the inlet pressure exceeds the pilot valve setting pressure, pilot relief valve will open automatically, some water will flow out through Ball Valve C to relief pressure. When the pressure reduced to safety setting value, pilot relief valve will close automatically.  Ball valve is open when the main valve is used as Relief Valve.

1. Being Used as a Pressure Sustaining Valve.

  When the Pilot valve is on the pressure sustaining status, only when the main valve inlet water pressure lower than the pilot valve setting value, the pilot valve will close, then the main valve chamber pressure rises, main valve will close. When the main valve upper stream pressure exceeds the pilot valve setting value, pilot valve will open, and the water in the main valve chamber will flow out through ball valves and main valve start to supply water. Ball valve C is Closed or replaced with a screwed plug when the main valve used as sustaining valve.

Specification

Pressure Relief or Sustaining Valve (GA500X)

PN(Mpa)	Shell Test(MPa)	Sealing Test (MPa)	Medium	Applicable Temp.(ºC)
1.0	1.5	1.1	Water	0-80
1.6	2.4	1.76
2.5	3.75

 

Product Details

Pressure Relief or Sustaining Valve (GA500X)
Main Parts & Material

No	Parts Name	Material
1	Body&Bonnet	CI/DCI/CS/SS
2	Seat&Diaphragm	Copper Alloy
3	Sealing Ring	NBR
4	Stem	2CR13
5	Spring	Spring Steel/SS
6	Needle Valve	Copper Alloy
7	Ball Valve	Copper Alloy
8	Filter	SS

 

Product Parameters

Pressure Relief or Sustaining Valve (GA500X)
Main Dimension

DN	L	H	H1	A	B
50	250	505	90	170	170
65	280	520	98	180	180
80	310	535	110	190	190
100	350	555	120	200	200
125	400	590	145	215	215
150	450	645	155	230	230
200	550	715	190	255	255
250	650	780	250	295	295
300	800	880	290	325	325
350	900	940	330	380	380
400	1000	1000	360	415	415
450	1000	1030	445	435	435
500	1100	1060	495	460	460
600	1100	1150	550	520	520
700	1450	1210	605	570	570
800	1560	1290	730	620	620
900	1800	1390	800	670	670
1000	2000	1500	910	830	830

After Sales Service

Our Services

Pre-sale service:
1.We have full stock and can deliver within short time.
2.OEM and ODM order are accepted, Any kind of logo printing or design are available.
3.Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you.
4.All of our products are produced by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.   
After you choose:
1. We will count cheapest shipping cost and make invoice to you at once.
2. Check quality again, then send out to you at 1-2 working day after your payment
3. Email you the tracking no., and help to chase the parcels until it arrive you.
After-sale service:
1.We are very glad that customers give us some suggestion for price and products.
2.If you have any question,please contact us freely by E-mail or Telephone.

View of the factory