Water Pump Control Valve 700X
I. Introduction:
The 700X pump control valve is a check valve installed at the pump outlet of high-rise buildings and other water supply systems to prevent medium backflow. When the pump is about to stop water supply, the valve first slowly closes about 90% to prevent water hammer or water surge caused by sudden pump shutdown; after the pump completely stops, the valve fully closes to prevent the pumped water from flowing back, effectively protecting the pump from reverse rotation due to the impact of backflow. This product is an essential protection device at the pump outlet. The valve features a streamlined design, and its precise opening and closing are controlled by an electromagnetic pilot valve. It is safe and reliable to use, effectively preventing water hammer and water surge, has a long service life, and is convenient for installation and maintenance.
II. Working Principle:
When the pump is working and supplying water downstream, the electromagnetic pilot valve is fully open, and the needle valve is adjusted to an appropriate opening. The upstream water enters the main valve control chamber through the needle valve and check valve, and flows out through the electromagnetic pilot valve. At this time, the pressure in the main valve control chamber keeps the main valve at an appropriate opening to maintain normal downstream water pressure.
When the pump stops working, the electromagnetic pilot valve closes first, the main valve control chamber stops draining, the pressure in the control chamber rises, and the main valve starts to close. When it closes to about 90%, the upper travel switch of the main valve outputs a pump stop signal, and the pump stops running. At this time, the downstream backwater enters the main valve control chamber through the check valve, the pressure in the control chamber rises, and the main valve is closed.
III. Technical Parameters:
Nominal Pressure (MPa) | Shell Test Pressure (MPa) | Seal Test Pressure (MPa) | Maximum Inlet Pressure (MPa) | Adjustable Outlet Pressure (MPa) | Applicable Medium | Medium Temperature (℃) |
1.0 | 1.5 | 1.1 | 1.0 | 0.09-0.8 | Water | 0-80 |
1.6 | 2.4 | 1.76 | 1.6 | 0.10-1.2 | ||
2.5 | 3.75 | 2.75 | 2.5 | 0.15-1.6 |
IV. Part Materials:
Part Name | Part Material |
Valve Body & Valve Cover | WCB |
Valve Seat & Valve Disc | Copper Alloy |
Seal Ring & O-Ring | Nitrile Rubber |
Valve Stem | 2Cr13 |
Spring | 50CrVA |
Needle Valve | Copper Alloy |
Ball Valve | Copper Alloy |
Check Valve | Copper Alloy |
Electromagnetic Pilot Valve | Stainless Steel |
Miniature Filter | Stainless Steel |
| Machinery & Equipment/General Mechanical Parts/Pumps | |
