Category: WATER CONTROL VALVE
working principle:
When the valve supplies water from the inlet end, the water flows through the needle valve and enters the main valve control chamber, and the outlet pressure acts on the pilot valve through the conduit. When the outlet pressure is higher than the pilot valve spring setting value, the pilot valve closes. The control room stops draining water. At this time, the pressure in the main valve control room increases and the main valve closes. The outlet pressure no longer increases. When the valve outlet pressure drops to the pilot valve spring set pressure, the pilot valve opens and the control chamber drains water downstream. Since the drainage volume of the pilot valve system is greater than the water inlet volume of the needle valve, the pressure in the main valve control chamber drops. The inlet pressure causes the main valve to open. Under steady state, the water inlet and drainage of the control room are the same, the main valve opening remains unchanged, and the outlet pressure is stable. Adjust the pilot valve spring to set the outlet pressure.
Product applications and features:
Function: When the pressure in front of the valve fluctuates or the flow rate changes, it can automatically reduce the high-pressure water in the pipeline to stable low-pressure water, and the outlet pressure of the pressure reducing valve can be adjusted at will within a certain range.
Application areas: construction, water treatment, etc.
Features:
1. Opening and closing without friction;
2. Top-mounted structure;
3. Reliable sealing performance;
4. Easy to operate;
5.Wide range of application.
Technical Parameters:
Nominal diameter: DN50-DN600
Nominal pressure: PN16, N25
Applicable temperature: 0C ~80C
Applicable medium: clean water
Minimum pressure difference: 0.1MPa
Design standard: JB/T 10674- -2006
Test standard: GB/T 13927-2008
Liquid level control height: ≤150mm
Main material
1 Gray cast iron, ductile iron, carbon steel, stainless steel - valve cover
2 Spring steel, stainless steel - spring
3 Gray cast iron, ductile iron, carbon steel, stainless steel - diaphragm pressure plate
4 Nitrile nylon reinforced rubber, EPDM nylon reinforced rubber - diaphragm
5 2Cr13 ——Valve stem
6 Gray cast iron, ductile iron, carbon steel, copper, stainless steel - valve disc
7 Nitrile rubber, EPDM rubber - O-ring
8 Gray cast iron, ductile iron, carbon steel, stainless steel - O-ring pressure plate
9 Copper alloy, stainless steel - valve seat
10 Gray cast iron, ductile iron, carbon steel, stainless steel - valve body
