Factory Wholesale DN80 Ductile Iron Stainless Steel 500X Pressure Relief Valve for Hydraulic Safety Structure General Application

Product Description

Product Description

 

Our hydraulic water pressure relief valves are engineered to automatically regulate pressure levels in various systems, making them ideal for municipal water systems, rural water systems, industrial plants, storage tanks, and fire protection systems. These automatic relief valves can be used in both modulating and on-off services, with the pressure control being either valve-mounted or operated remotely. They also offer feature combinations such as pressure sustaining and solenoid (on-off) capabilities.
Features and Benefits: 
 • Automatic control valve for efficient, self-running operation
 • Integrated disc design for easy maintenance
 • Constructed with a stainless steel piston cylinder, integral cast piston, and NBR sealing ring for extended service life
 • Large inner chamber reduces noise from cavitation and lowers static pressure.
 • For guide hole piston cylinders, increasing resistance ensures more stable piston movement.
 • Corrosion-resistant stainless steel and bronze components.
 • Reinforced Nylon + EPDM diaphragm for a long lifespan.

Applicable Standards:
• Flange standard: BS EN 1092-2
• Face to face standard: EN558 Series 10

Technical Data:
• Size: DN50 ~DN400(2 ″~16 ″)
• Nominal pressure: PN 16
• Temperature range: 0°C ~ 85°C
• Suitable for: Water and neutral liquids

Materials Specifications

Component	Material
Body	Ductile Iron JS1040
Bonnet	Ductile Iron JS1040
Seat (DN50-100) Seat (DN125-400)	SS304 Al-Bronze
O- ring	Rubber, EPDM
Diaphragm	Reinforce Rubber with Nylon
Disc	Ductile Iron JS1040

Structure & Size

No	Size	DN	D1	D2	T	n- d	L	H	Weight (kg)
1	2″	50	165	125	19	4-19	230	152	12.5
2	21/2″	65	185	145	19	4-19	290	172	16.5
3	3″	80	200	160	19	8-19	310	182	20.0
4	4″	100	220	180	19	8-19	350	218	30.0
5	5″	125	250	210	19	8-19	400	240	41.0
6	6″	150	285	240	19	8-23	480	275	56.0
7	8″	200	340	295	20	12-23	600	329	101.0
8	10″	250	405	355	22	12-28	622	418	251.0
9	12″	300	460	410	25	12-28	698	503	315.0
10	14″	350	520	470	27	16-28	787	580	426.0
11	16″	400	580	525	28	16-31	914	639	551.0

 
Pressure Drop Curve(Main Valve Fully Open)

Advantages of Our Products

Why Choose Us

Factory Overview

Packaging & Shipping

 

Certifications

FAQ

Are you a manufacturer or trading company?
DVK Valve is a specialized valve manufacturer, backed by a skilled and experienced R&D team.

Are you make OEM or ODM product?
Yes, if QTY attractive enough, we can create new mould for you, make bodies casting with your logo and your nameplate; if QTY not attractive enough, will be only with your nameplates or labels.

What kinds of valve can you supply?
We can supply butterfly valve, ball valve, check valve, gate valve, control valve, brass valve, bronze valve, strainer, valve fittings and so on.

How long is your delivery time?
General speaking, we have some stock for regular products, it is 1~2 weeks if the goods are in stock; if not in stock will be 4~8 weeks, depends on quantity.

What's the package and how do you ship the goods?
We typically use seaworthy plywood cases for packaging. Shipping is usually done by sea, other shipping methods can also be arranged. Please contact us if you require a different shipping route.

Can you provide the relevant documentation and certificates?
Yes, we can provide the necessary documentation and certificates, including the ISO9001,ISO24001, ISO45001, CE, BV, ABS, SIRIM, TUV-SUD etc. We can also provide the Test Report, Certificate of Material Analysis, Certificate of Origin, and other export documents if required.

Do you provide free samples?
If samples available in stock, yes, we could offer the free sample to you, but the air cost or courier cost will be on your account.

What are your payment terms?
Order value less than 2000USD, 100% in advance. Order value more than 2000USD, 30% T/T in advance, balance before shipment. L/C available as well.