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Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve

China Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve, Find details about China Industrial Valve, Valve from Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve

Model NO.
500X
Structure
Diaphragm
Material
Cast Iron
Trademark
ZJ
Specification
DN40-DN500
Origin
China
Model NO.
500X
Structure
Diaphragm
Material
Cast Iron
Trademark
ZJ
Specification
DN40-DN500
Origin
China
Flanged Ductile Iron 500X Pressure Relief Valve for Water System 
Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve
Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve


 
Pressure Reducing Valve automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate and/or varying inlet pressure.
This valve is an accurate, pilot-operated regulator capable of holding downstream pressure to a re-determined limit. When downstream pressure exceeds the pressure setting of the control pilot, the main valve and pilot valve close drip-tight.

Our Pressure Reduing Valve are adopt the lastest technologies, with fully bore design, lowest head lose when fully open.

The Pressure Reducing Valve is design with anti-cavitation for application where there is high potential for damage from Cavitation, which provide optimum internal pressure control through a unique anti-cavitation trim design.
Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve
Working mechanism and Application
 
When it is used as a pressure relief valve,the main valve is installed at sluicing bypass way,it means that it is installed and connected in parallel with the main pipelines.when the upstream pressure rising up gradually,and start to exceed the set value pressure of the pilot valve(seen 13 in the drawing),the main valve will start to open up and sluice water to lower the water pressure to below the set value pressure of the pilot valve(Seen 13 in the drawing),then the main valve will close slowly and stably, and prevent water hammering happens, guarantee the pipeline safe.
 
When it is used as pressure relief valve,it is mainly used for removing the exceeded water pressure generated by situations that water supply is more than water consuming and the difference increases gradually and result high water pressure. It is often seen in situations of initial stage when open the fire hydrant systems,and the outlets of automatic spraying system and all kinds of water supply pumps.The ball valve(seen 12 in the drawing) is open state when is used as pressure relief valve.
 
And when it is used as pressure sustaining valve,the main valve is installed in main pipeline,it is connected in-line(series connected) with the main pipeline.As long as the water pressure at main valve upstream is lower than the set valve pressure of pilot valve,the main valve will stay at close state,when water supply pressure of the main valve upstream exceeds set vaule pressure of the pilot valve,the main valve will open automatically and supply water to downstream so that it can make the water pressure at upstream at a stable pressure ranges. It is mainly used to maintain a certain lowest water pressure value in main pipelines in city. Especially, for fire situations happens,it can prevent branched pipeline water users pumping water excessively,and then lower the water supply pressures.When use as the sustaining valve,the ball valve(Seen 12 in the drawing) is close state or replace it with pipe plugs.

Structures
This valve is consisted of main valve(master valve),pilot valve,Guide regulating valve,needle valve,ball valve,micro-strainer and pressure meters(Pressure gauge). Because the pilot valve, needle valve and the pressure gauge are connected to main valve(master valve) by conduit pipes,so it is also called conduit pipe controlled system.it is divided into diaphragm type and piston type according to different pipe diameter size.Seen in the drawing below:

Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release ValveHot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release ValveHot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve

Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve
Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve
Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve
Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve


Hot! ! 500X DN50 80 100 200 300mm Flange Connection Shut Down Automatically Adjustable Fire Pressure Release Valve
FAQ

1.Can I have a sample order for valve?
A: Definitely Yes.We welcome sample order to test and check quality. Mixed samples are acceptable.

2. Can you OEM or ODM?
A:Yes, we have a great research & development team. The products can be made according to your request.

3. Can you provide the relevant documentation and certificate?
A:Yes, we can provide you with the documentation and certificate you need ,IS09001:2000 international quality system certification,(CE)certification of the European Community, Det Norske Veritas (DNV) factory certification, Lloyd's Register (LR) factory certification, China Classification Society (CCS) quality system certification and the FM and UL certification of the US, Bureau Veritas(BV) ,American Bureau of Shipping(ABS) etc.Of course we can also provide you the test Report; Certificate of Material Analysis; Certificate of Origin; and other export documents which required.

4.Can you do the design for us?
A:yes.Please send us high resolutionimages,your logo and other materials needed . We will send you finished files for confirmation.

5.How to proceed an order for valve?
A: Step1 let me know your requirements or application. Step 2 We quote according to your requirements or our suggestions. Step 3 Customer confirms the samples and places deposit for formal order. Step 4 We arrange the prodution.

6.What is your terms of delivery?
A: We accepte EXW,FOB,CIF,etc. You can choose the one which is the most convenient for you.

7.What's the package and how do you ship the goods?
A: Usually is wood pallet as your requst. We usually ship by sea.Airline shipping is also optional.

8. How to deal with after sales ?
A: warranty time : 12 months from the shipment ; and we will be responsible for all the quality problems. Quality control : High quality mold./Raw materials control/Production process quality control/Final inspection/Water testing (no leaking).

9. What is the average lead time?
A:For samples, the delivery time is about 2-5 days. For mass production, the lead time is about 15-60 days after receiving the deposit payment. we can provide production schedule and related photos every two weeks. The lead times become effective when (1) we have received your deposit, and (2) we have your final approval for your products.If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate our production plan to your needs.

10. Why choose us?
A:1 Genuine produces with excellent quality and competitive price. 2 Cooperating with the customers all over the world more than 60 countries and regions, and knowing the markets very well. 3.We have been specializing in flow control area for more than 10 years. Everyone can be rest assured working with us. 4 After-Services will be highly-satisfing. Any problems and feedbacks will be answered in a short of time.

11: How can I trust you and your company?
A: We are a verified supplier and creditable company on alibaba, we are focusing on the long term relationship with customers, we have worked with thousands of customers since company built 10 years ago, Including Fortune 500 companies. customers always make highly complimentary remarks.

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