Hydraulic Piston Pressure Relief Safety Valve, DN 40-1200mm, PN 1.6/2.5 MPa

Specifications 1 Piston actuated; accurate pressure set

2. cavitation resistance

3. low noise of safety valve

4. Water tightness

Piston Pressure Relief Safety Valve, DN 40-1200mm,PN 1.6/2.5MPa   Product Description Working principle:Upstream pressure P1 gets into the upper part of control chamber through the constant pressure pilot valve and the control tubing, and then goes into the outlet through constant pressure pilot valve. The opening pressure can be set through the adjusting bolt of position pilot valve. When pressure exceeds set point, the position pilot valve will open with the main valve following. Thus the system pressure will be discharged so as to ensure system s safety.   Application: This kind of valve is widely used in water piping system for water and wastewater, fire prevention and power plants, which can get quick feedback from pressure fluctuation and then discharge promptly so as to prevent the damage of piping equipment.       Main Performance Parameters  

Nominal Pressure		1.6MPa	2.5MPa
Test Pressure	Shell	2.4MPa	3.75MPa
	Seal	1.76MPa	2.75MPa
Adjustable pressure scope		0.1~1.44MPa	0.1~2.2MPa
Suitable Medium		Water
Working Temperature		0~100°C

  Main Parts List and Materials   

No.	Parts name	Materials
1	Valve body	GGG50 with epoxy resin coating
2	Guide shaft	Copper alloy/ GGG50
3	Valve stem	SS 321
4	Cylinder	Copper alloy
5	Piston	Copper Alloy
6	Bonnet	GGG50 with epoxy resin coating

  Features  l  Accurate set pressure, keep stable for a long time and promptly release pressure when exceeding the set pressure l  Resilient seal, reliable, water tightness l  Y-pattern wide valve chamber, low flow resistance, strong cavitation resistance, no noise. l  Piston gearing, stable and reliable, can inspect pressure readout on spot with shockproof meter. l  Can be installed in any position. l  Both interior and exterior of the surface are coated with environmentally friendly epoxy resin for better corrosion resistance and safety. l  While placing an order please specify clearly if used in seawater        Main Dimensions                                                                                                          PN: 1.6 MPa, 2.5 MPa         Packaging & Shipping Polyethylene Bags---- Standart export carton----Wooden case or as per customers' requirement Shipping:Seaworthy  30 days in normal after receipt of the order. It mainly depends on quantity and types of valve  Company Information  Guangdong Yongquan Valve Technology Co.,Ltd (YQ for short) was founded in 1982 and its headquarters is based in Foshan city, Guangdong province. YQ manufactures a broad range of valve products under the “YQ” brand.These valve products are designed for use in the toughest applications such as municipal water systems; water supply and drainage systems in high-rise buildings; fire protection systems; HVAC systems, and industrial water systems. YQ also manufacture valves for use in sea water, and other applications.   So far,YQ produces over 30 series, more than 5700 types of products, and over 50 of them are patented. Patented products are available in a wide range, including pressure reducing valves, pump control valves, gate valves, and backflow preventers, etc. The gate valve has been both FM approved and UL listed. Not only does the company have its products sell nationwide, but also they are exported to oversea countries. Up till now, YQ products have been applied in more than 400 water supply companies, 100 national key projects as well as 20 overseas projects. YQ products can be found in national key projects including the Bird Nest (the national Olympic stadium), the Water Cube (the national swimming center) and the national theater, as well as Guangzhou International Convention & Exhibition Center, etc. They are also exported to other countries, such as the U.S.A., Canada and Russia etc.   The company focuses on products’ technical development. The objective of the company is “to serve our customers with revolutionary valves”. A marketing strategy of product localization and globalization will be taken into account for the company’s long term sustainable development. For requesting more information, please visit our website on http://www.yq.com.cn/.      Contact Ways