Product Details

working principle:

When the valve supplies water from the inlet end, the water flows through the needle valve into the main valve control chamber, and flows out of the main valve control chamber through the pilot valve and ball valve to the outlet. At this time, the main valve is in a fully open or floating state.

By adjusting the flow regulating valve on the upper part of the main valve, a certain opening of the main valve can be set. By adjusting the needle valve opening and the pilot valve spring pressure, the main valve opening can be maintained at the set opening, and the pilot valve will automatically adjust when the pressure changes to keep the flow rate unchanged.

Product applications and features:

Function: Control the flow of the medium in the pipeline without increasing the flow due to the increase in inlet pressure.

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: clear 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