Principle:

the medium enters the lower cavity of the body to push the disc upward and,at the same time,enters the upper cavity of the diaphragm via the enternal control pipe of the main valve,where the pressure is adjustable by the pilot valve.the pressure difference between the upper cavity of the lower one of the body makes the disc move up and down so as to change the outlet pressure.When the pressure of both are identical,the disc stay at one place and the putlet  pressure will be kept unchange.\

Characteristic:

the valve uses full passage streamline design,of a small fluid resistiance and a heavy flow,can reduce either dynamic or static pressure.

Purpose:

Adjust and control the main valve outlet pressure which will not be change along with the inlet pressure as well as the variation of the mian valve outlet flow.Applicable for living water supply,fire fighting system and industrial water supply system 

how to reach our factory:
by plane:
from Beijing airport:240kms,3 hours by driving.
from Tianjin airport:150kms, 2 hours by driving.
by Train:
from beijing South railway station:224Kms, 1 hours
from Shanghai Hongqiao railway station:1167Kms, 4.5 hours
by Car:
from CangzhouXi railway station:45kms, 40 minutes.

Our address: Botou Industry Park,Cangzhou City,Hebei Province,China
Contact person to pick you up from air port or anyplace in China, please call alan
Botou Shengfeng auto-valve Co,. LTD is a specialized manufacture enterprise that focuses producing, installing, sale and service. the main products include Gate Valve,Waterpower Control Valve,Center Line Butterfly Valve, Flanged Butterfly Valve, Metal Butterfly Valve, Check Valve, Microresistance Slow Close Check Valve, Multi-function Pump Control Valve and their series products. Moreover, we can produce control valve and pressure reducing valve that are different materials, pressures, specifications, actuation ways. Our products include more than 50 serials and 1200 species, and the annual production output is more than 8.000 metric tons. Shengfeng valves have been selling well all over China and exporting to Europe, America and other countries and areas, which are used widely in water supply and drainage, electric power, petrol chemical industry, metallurgy and other trades. Our products are quite creative, good quality, cheap price and excellent.