Fujian, China
Business Type:
Manufacturer/Factory & Trading Company
Number of Employees:
Year of Establishment:
Type of Ownership:
Limited Company
Management System Certification:
ISO9001:2008, ISO14001:2004, OHSAS18001:2007
OEM/ODM Service
Sample Available

Pressure Reducing Valve, Reducing Valve, Water System manufacturer / supplier in China, offering Pressure Relief Valve for Extinguishing System, Afff Foam Concentrate, Synthetic Foam Concentrate Liquid and so on.

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Audited Supplier

Pressure Relief Valve for Extinguishing System

Min. Order / Reference FOB Price
1 Piece US $400/ Piece
Port: Xiamen, China
Production Capacity: 10000 PCS/Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Color: Red or Blue
Pressure: 16 Bar
Flow Rate: 2000-5700L/Min
Temperature: 4-70 °c
Material: Ductile
Transport Package: Wooden Case

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Basic Info.

2.5′′,3′′,4′′,5′′,6′′,8′′,10′′,12′′,14′′,and so on
HS Code
Pressure Relief Valve for Extinguishing System

Pressure Relief Valve for Extinguishing SystemPressure Relief Valve for Extinguishing System
1Valve Body5Inlet valve
2Filter6Reducing pressure valve
4Connection pipe8Pressure guage
1Valve body5Diaphragm
2Valve seat6Valve clack
3Valve cover7Sealing rubber
4Reset spring8Valve steam

Pressure Relief Valve for Extinguishing System

Rate W.P1.6MPa
Flow rateInlet pressure1.6MPa
Outlet pressure(0.4~0.5)MPa±0.05
PressureInlet pressure(1.28~1.68)MPa
Outlet pressure(0.4~1.1)MPa±5%
Static pressure rise0.1MPa
Max flow rate2000L/min3900L/min5700L/min

There are two types of water pressure reducing valves, direct acting and pilot operated. Both use globe or angle style bodies. Valves used on smaller piping diameter units are cast from brass; larger piping diameter units are made from ductile iron. Direct acting valves, the more popular type of a water pressure reducing valves, consist of globe-type bodies with a spring-loaded, heat-resistant diaphragm connected to the outlet of the valve that acts upon a spring. This spring holds a pre-set tension on the valve seat installed with a pressure equalizing mechanism for precise water pressure control.

How Does Watts Direct Acting Water Pressure Reducing Valve Work?

Installed in series directly after the water meter in homes, commercial buildings, and manufacturing plants, a water pressure reducing valve automatically reduces the pressure fromthe water supply main to alower, more sensible pressure.
Water entering the valve from municipal mains is constricted within the valve body and directed through the inner chamber controlled by an adjustable spring loaded diaphragm and disc. Even if the supply water pressure fluctuates, the pressure reducing valve ensures a constant flow of water at a functional pressure, as long as the supply pressure does not drop below the valve's pre-set pressure.

Sizing a Water Pressure Reducing Valve for Your Application

A properly sized valve prevents noisy operation or premature valve failure. Over sizing water pressure reducing valves can lead to problems such as wire draw under low flow conditions. In general, the minimum flow through a water pressure reducing valve should be 10% to 15% of the maximum flow rate desired in the system. Also, water pressure reducing valves should be selected based on the flow and pressure ranges listed in the literature, not the size of the pipe to which they will be attached. You should select a regulator whose operating pressures fall within the middle of its rated range.

Choosing the Correct Installation Configuration

Watts water pressure reducing valves can increase your water system's performance, reduce operating costs, and ensure a longer life for other plumbing fixtures. Most simple pressure reducing applications require the installation of a single regulator. However, there are applications that require the use of more than one unit installed in a specific system configuration. When there is wide variation in pressure between the municipal main's inflow pressure and the functional pressure needed within the building, or when the main's pressure exceeds 200psi, you should consider using a two-stage, serial reduction configuration. When you want to maintain a continuous supply of water at reduced pressures, you should consider a parallel installation

wo-Stage Serial Reduction Configuration

The two-stage serial reduction approach uses two valves in series to reduce or eliminate extreme variations between the water main's inflow pressure and the desired, final reduced pressure. Two stage reduction is recommended when initial pressures are 200psi or greater, or when the desired pressure reduction ratio is greater than 4:1, e.g., from 200psi to 50psi, or where the inflow pressure fluctuates greatly. The advantage of two-stage serial reduction is that neither valve is subjected to extreme pressure differentials, thus prolonging valve life and delivering more precise pressure regulation.

Parallel Installation

The parallel installation makes use of two or more smaller size water pressure reducing valves serving a large size supply pipe main. This approach should be used wherever there is a wide variation of reduced pressure requirements such as an apartment building where demand could be .5 gpm at 1am and 100 gpm at 6am and where you must maintain a continuous water supply. Parallel installations also offer the advantage of providing increased capacity where needed beyond that provided by a single valve. In addition, the parallel configuration improves valve performance for wide variable demands and permits servicing of an individual valve without shutting down water flow to the building completely, thus avoiding costly shutdowns.

COMPANY INFORMATION Company information 
Baian (BAFF) fire-fighting co.,ltd is located in the southeast coast of Fujian, established in 1990, is covering 120000 square meters of workshop and office building. All its products, which have been certified qualified by CCC Certification and have obtained Product Type Approval Certificate granted by Public Security Ministry as well as ISO9001:2008 Certificate. We are also manufacturing and supplying a wide range of related fire accessories including fire hydrant, fire hose, water pump connectors, fire alarm system, fire valve, fire gas extinguishing system,etc.

All Baian (BAFF)People are deeply aware that good quality, advancing management, quality service has helped Baian fire-fighting take a leading position in the line. Our brand products are now registered and indentified in the world such as French, Spain, Romania, Saudi Arabia, USA, etc.

Being as a international manufacturer of fire equipment, we guarantee the quality and performance of our products as well as our after sales service. We welcome customers to visit and cooperate with us
Our company has a history of more then 30 years , 5 years of alibaba gold supplier . Registed capital of RMB 57.88 million , 180000  square meters and more then 200 employees and more then 50 research and design staff.
Pressure Relief Valve for Extinguishing System
HOT SALE PRODUCTSPressure Relief Valve for Extinguishing SystemWHY CHOOSE US ?
1.We have in fire fighting for more then 33 years (old manufacturer in china )        
2.  Fixed access of 
55.88 million RBM                                                                        3.We are technology manufacture , we can have drawing for you before order , also have 3 D drawing if customer inquiry                                                                   4.We have 8 years for export hope can provided you a professional purchase            
5.Focused on
 surface on all products                                              
6.BAFF company have branch company in 
7.Every year have 
oversea exhibition for our brand . 


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