PN1.6mpa Ductile Iron Reduced Pressure Regulator Valve Water Conservancy Valve

The working principle of

Valve INLET P1 ENTERS THE CONTROL ROOM OF THE MAIN VALVE THROUGH THE CATHETER AND NEEDLE VALVE 19 (SEE CONSTRUCTION DRAWING) AND ESTABLISHES DIRECTION

Under the pressure P3. The outlet pressure P2 acts under the diaphragm of pilot valve 13 through the catheter and is opposite to the regulating spring of pilot valve

Resistance. When the outlet pressure P2 exceeds the set value of the pilot valve spring, the pilot valve is closed, and the water excretion in the control room is 0.

When THE VARIABLE PRESSURE P3 REACHES THE MAXIMUM, THE MAIN DISC COMPRESSES THE SEAT, THE REDUCING VALVE CLOSES, AND THE DOWNSTREAM PRESSURE DECREASES. When the export

When the pressure P2 is less than the set value of the pilot valve spring, the pilot valve is opened, and the pressure water in the control room will pass through the pilot valve

9. Discharge to the valve outlet. Due to the small opening of the needle valve, the discharge speed in the control room is greater than the pressure water replenishment speed at the inlet.

Thus, the pressure P3 in the control chamber is reduced, and the inlet pressure P1 under the main valve disc 5 is always applied to support the main valve disc

To open the pressure reducing valve and increase the downstream pressure. In steady regulation, the discharge rate is equal to the rehydration rate,

The main valve port opening is unchanged, and the downstream pressure is stable.

Connection size

Main technical performance

Product introduction

The valve body adopts the whole channel streamline design, fluid resistance is small, flow, sealing effect is good, in the transmission mode adopted the hydraulic operation, that is, the use of water pressure in the pipeline to automatically operate the main valve disc up and down movement, control valve opening, adjust the downstream pressure. Maintain the downstream pressure at the pressure set by the pilot valve spring. When the downstream pressure exceeds the set value, the pressure reducing valve will automatically close to ensure that the outlet pressure is unchanged. The product is the ideal product for domestic water supply, fire water and industrial water supply system

Yuanda Valve Group Co., Ltd., founded in 1994, is headquartered in Yincun, Longyao, Hebei, China, the hinterland of Bohai Economic Rim surrounding Beijing and Tianjin. With a registered capital of RMB 200 million, Yuanda currently has 8 subsidiaries, of which 6 are in China and 2 overseas. Among them, the core company, which covers an area of 540,000m2 and has more than 3500 employees, is the largest high,midium and low-pressure valve manufacturing base specializing in valve development, manufacturing, and sales in China.

Yuanda has obtained DNV·GL, ISO9001: 2015、ISO14001:2015、OHSAS18001:2007, API6D（6D-0759）, CE, KS, and EAC certifications. Its""trademark is evaluated as Famous Trademark of China and Famous Brand in Hebei Province, and the product series produced under"" is a trademark registered in Korea and products produced under this trademark enjoy a good reputation in both international and domestic markets. Yuanda has been named “Credit Management AA-Rating Enterprise” by the General Administration of Quality Supervision, Inspection and Quarantine and granted the title of “China Quality Trustworthy Enterprise” by China Entry and Exit Inspection and Quarantine Association. It is also a holder of Manufacture License of Special Equipment Level A and Casting Certificates Grades B, B1, and B2, and a member of China Valve Association council, a corporate member of China Foundry Association, and a provincial enterprise technology center in Hebei. Yuanda has been granted the power to carry out import and export operations on its own and is an approved supplier of PetroChina (CNPC) and Sinopec, Guodian, Huaneng, Huadian, Datang and China Power, and China Aluminum, CCESCC, Shougang, Wuhan Iron and Steel Company, and Hebei Iron and Steel Company.

Yuanda manufactures to standards including GB/JB(china), ANSI, API, AWWA, DIN, BS, JIS, EAC, NF and so on, and uses HT200, HT250, QT400, QT450, WCA, WCB, WCC, CF3, CF8, CF3M, CF8M, 1Cr5Mo, LCB, among others, to produce a great variety of valves including gate valves, globe valves, ball valves, butterfly valves, check valves, diaphragm valves, pressure-relief valves, plug valves, and traps, which are available in 12 main categories, 200 series and 4000 specs, totaling 120,000 tons a year. These products are widely used in all civil sectors covering petroleum, petrochemical, chemical, power generation, metallurgy, water system, pharmaceuticals, urban construction, and water supply and drainage.