Product Details

Specifications

Four-way Switch valves(Four-way Switch Ball Valve) for Bidirectional Water Supply

Four-way Switch valves(Four-way Switch Ball Valve) for Bidirectional Water Supply

Description

In hydropower plant,the water supply system(water supply systems for generator’s cooler, generator set’s bearings cooling water,main shaft sealing) often employ bidirectional water supply methods,supply water in positive and negative directions,and flush the pipeline regularly to avoid mud and sand silting up in the pipeline.

The diagram below shows that in this water supply system,it needs four motorized valves to work together. When water supply in positive direction,open valve 1 and valve 4,close valve 2 and valve 3;and when water supply in negative direction,open valve 2 and valve 3,and close valve 1 and Valve 4.

The water supply system is to complicated installed.and occupy to big room,and employ 4 motorized valves,it will increase cost and increase the odds to break down,if one of the valves can’t work,the whole system can’t work any more.

So our this four-way switch valve solves this problem,only one four-way switch valve can replace the function of the four motorized valves.

Working mechanism of Four-way switch valve for bidirectional water supply system.

Water Supply Four-way Switch valve can make the water supply system simple,and not so complicated.

Its working mechanism is showed below diagrams

The water flow direction in the valve can be controlled by manual or the valve controls itself automatically. When set a differential manometer at two ends of the cooler,when the differential pressure reaches the set value,the electric actuator drive the valve to switch water flow direction automatically.

Features

1 one four-way switch valve can replace four traditional valves,reduce cost and reduce the odds of the system to break down.

2 switch promptly,Only the valve core turns 90 degree, water flow direction in the system will be switched.

3 when the system pipe is blocked,the valve can switch flow direction automatically.

4 Excellent sealing performance

5 The motor head has a heating resistor,it can improve the working life of the motor in wet working condition.and there is a handwheel at the motor head,if accident happens and the motorized actuator can’t work,the valve can be controlled by manual by this handwheel.

Four-way switch valve Structures

Four-way switch valve Drawing

Four-way switch valve Material

Serial No.	Component name	Materials
1	Body	Ductile iron(QT450-12 or SS304
2	Valve core	Stainless steel
3	Valve seat	PTFE
4	Spring	Spring steel(60Si2Mn),plated with nickel at the surface
5	Embedded type flange	Ductile iron(QT450-12 or SS304
6	Bonnet	Ductile iron(QT450-12 or SS304
7	Adjusting ring	Bronze(QSn6.5-0.1)
8	packing	Flexible graphite
9	Bearing	Bronze(QSn6.5-0.1)
10	Fastener	Stainless steel(A2-70)