D&R 1" Brass Pressure Reducing Valve Exposed Brass Threads DN25 Prv Factory Preset 3 Bar Adjustable Control Valve for HVAC

• Customization: Available
• Media: Water, Compressed Air, and Inert Gases
• Standard: G
• Model NO.: RVBR004-DN25
• Certification: ISO, CE, as Requested
• Temperature: Ordinary Temperature
• Connection: Thread
• Valve Seat: Single-Seat
• Structure: Compensated Piston
• Material: Brass
• Regulation Mechanism: Compensated Piston Operation
• Working Medium: Water (Hot/Cold), Compressed Air, and Inert Gases
• Working Temperatures: 0℃~80℃
• Max Inlet Pressure: 25 Bar
• Outlet Pressure: 1~6 Bar
• Application: Building Water Supply Systems, HVAC Systems
• Customized Services: Supported
• Transport Package: Normal or OEM
• Specification: DN15~DN100
• Trademark: D&R or OEM
• Origin: China
• Production Capacity: 500000 Pieces/Year
• Package Size: 6.00cm * 12.00cm * 18.00cm
• Package Gross Weight: 1.500kg

Product Description

Product Photos

Product Description

 A valve that reduces high upstream pressure to a safer, lower downstream pressure

D&R DN25 1" Brass Pressure Reducing Valve Adjustable 1–6 bar PRV Compensated Piston Type Pressure Control Valve Water Pressure Regulator for Plumbing, HVAC, Heating Systems, Pump Stations, Domestic Water Supply, Industrial Pipelines Female Thread Brass Body

Material (1/2" ~ 1")

1. Regulator - Brass, Nickel-plated
2. Nut - Polymer
3. Spring - Carbon Steel
4. Upper Plug - Brass, Nickel-plated
5. Diaphragm - Brass
6. O-ring - EPDM
7. O-ring - EPDM
8. Stem - Brass
9. Body - Brass, Nickel-plated
10. Seat - Brass / Stainless Steel AISI 303
11. Flat Seat Washer - EPDM
12. Shutter - Brass
13. O-ring - EPDM
14. Bottom Plug - Brass, Nickel-plated
15. Cap - Polymer
16. O-ring - EPDM

Materials of some parts may differ slightly due to customized configurations. We offer full material and component customization upon request.

Function

Pressure reducing valve is a device that lowers and stabilizes downstream pressure according to the set upstream pressure.

When water enters from a public supply system with excessively high or unstable pressure, the pressure reducing valve ensures a stable and safe downstream pressure.

Fluctuations in upstream pressure will not affect the downstream pressure. Within the adjustable range of the valve, the operator can set the downstream pressure to the desired value.

Factory preset: 3 bar

Attribute	Description
Regulation Mechanism	Compensated Piston
Main Material	Brass
Working Medium	Water (hot/cold), Compressed Air, and Inert Gases
Working Temperatures	0℃~80℃
Max Inlet Pressure	25 bar
Outlet Pressure	1~5.5 bar (1/2" ~ 1") 1~6 bar (1 1/4" ~ 4")
Size Ranges	1/2" ~ 4" (Customizable)
Connection Type	Threaded (NPT / BSP / G / Customized)
Application	Building Water Supply Systems, HVAC Systems, Compressed Air Systems
Customized Services	Supported (Logo, Colors, Package, Brand Name, Printing, Carton According to Your Request)

Overall Dimensions

The dimensions shown are based on D&R sample test data and are for reference only. Final specifications can be customized and calculated according to your actual requirements. 

Unit: mm

	1/2"	3/4"	1"	1 1/4"	1 1/2"	2"	2 1/2"	3"	4"
DN	15	20	25	32	40	50	65	80	100
A	77	85	91	118	126	142	147	179	188
B	124	127	159	220	220	248	267	290	331
C	38.5	38.5	56	68	68	86	87.5	96.5	103.5
D	12	12	13	18	18	20	20	22	23.5
bar / psi	25 / 362.5	25 / 362.5	25 / 362.5	25 / 362.5	25 / 362.5	25 / 362.5	25 / 362.5	25 / 362.5	25 / 362.5

Applications

Pressure reducing valves are used in water supply systems, heating systems, compressed air systems, and inert gas systems. They are suitable for hot/cold water, compressed air, and inert gases.

Recommended Installation Layout

To ensure stable outlet pressure, protect internal components, and extend the overall lifespan of the

Pressure Reducing Valve (PRV),

we recommend installing it together with the following components in sequence:

Flow Direction → Ball Valve → Strainer Valve → Pressure Reducing Valve → Check Valve → Ball Valve

These valves must be installed in accordance with proper pipeline installation standards and considered an integral part of the overall system.

Related Products

Company Profile

FAQ

Q1. Are you factory or trader? 

We have our own brass products factory and are able to supply brass valves, fittings, custom parts, braided hoses, stainless steel valves, PVC valves, welding machines, welding heads. We have an average production capacity of 1.5 million pieces per month. And welcome visits to our factory at any time.

Q2. How do you ensure that your products are reliable? 

From the inspection of raw materials, and the inspection during the production process: to 100% pressure test, appearance inspection, finished product size measurement, we will do inspection reports, take inspection and boxing video and photos. Also we support online inspection. The information will be sent to you before delivery. If you have a certificate request, we can cooperate with you to apply for the certificate according to your requirements and accept third party inspection.

Q3. Do you have your own R&D team? 

Of course we have. We can draw sketches according to the customer's requirements and make reasonable suggestions. And we manufacture hundreds of customized products for our customers every year.

Q4. Do you provide samples?

Yes, we are very happy to provide you with samples, especially your customized products.

Q5. Can you accept mixed payments? 

Yes, we are happy to provide you with more convenient services.