Introduce the structure and function of the plunger valve

1. Flow path: straight-through

2. The valve body and valve cover are cast steel or steel castings, and the plunger, valve stem and isolation ring are stainless steel. The seal is flexible graphite or Teflon

3. The sealing ring and the isolation ring are pressed by the valve body and the valve cover connecting bolts, nuts and spring washers.

4, by the plunger outer diameter and the seal ring to achieve sealing

5, the valve opens and closes slowly

2. For welding connection straight-through plunger valve

1. Flow path: straight-through

2. The valve body and bonnet material are cast steel.

3, other structural features with the serial number

Three. Flange connection straight-through plunger valve

1. Flow path: straight-through

2. The valve body and valve cover are cast steel or steel castings, and the plunger, valve stem and isolation ring are stainless steel. The seal is flexible graphite or Teflon

3. The sealing ring and the isolation ring are pressed by the valve body and the valve cover connecting bolts, nuts and spring washers.

4, by the plunger outer diameter and the seal ring to achieve sealing

5, the valve opens and closes slowly

Four. Flange connection pressure balance straight-through plunger valve

1. Flow path: straight-through

2. The valve body and valve cover are cast steel parts: the valve stem, the plunger and the isolation ring are stainless steel; the sealing ring and the packing are flexible graphite or polytetrafluoroethylene; the valve stem nut is copper alloy.

3. The sealing ring and the isolation ring are pressed against the connecting bolts, nuts and spring washers of the valve body and the valve cover.

4. Sealed by the outer diameter of the plunger and the inner diameter of the seal ring

5. The plunger is hollow, and the upper and lower chambers have through holes. The valve stem is connected with the upper sealing sleeve and the nut to balance the pressure of the upper and lower chambers of the plunger, and the labor is saved when opening and closing. However, the stem should have an upper seal and a packing seal.

6, the valve opens and closes slowly

V. Globe valve plunger valve

1. Flow path: straight-through

2 valve body, bonnet and plunger body are cast steel; valve stem and plunger pressure ring are stainless steel; sealing ring and packing are flexible graphite or PTFE

3. The valve body and the plunger sealing ring are fitted with stainless steel bushings.

4. The seal ring is pressed against the plunger body by a plunger pressure ring.

5. Sealed by the outer diameter of the plunger seal ring and the inner diameter of the valve body bushing

6, the valve body, the valve cover are bolted, the gasket for sealing

7. The valve stem seals the packing and the upper seal, and the packing is pressed to achieve the seal.

8, valve stem transmission stem nut, rotating hand wheel can open and close the valve

9. The plunger valve of this structure is faster than the conventional plunger valve.

Flange connection double seat pressure balanced straight-through plunger valve

1. Flow path: double-port straight-through

2. The valve body, upper valve cover and lower valve cover are all cast steel parts; valve stem, plunger and isolation ring are stainless steel; sealing ring, packing is flexible graphite or PTFE

3, sealing ring, isolation ring plunger guide sleeve with upper and lower valve cover, bolts, nuts, spring washers pressed into the valve body

4. The plunger can move up and down in the upper and lower sealing rings and the guiding sleeve, and the pressure guiding hole is arranged on the guiding sleeve, and the medium pressure can enter the lower cavity of the guiding sleeve through the small hole. Sealed by the double sealing surface of the plunger and the double sealing ring inside the valve body

5. The valve is a double seat sealing plunger valve, which can pass a large flow. Because the plunger is short, the opening and closing speed is larger than the conventional plunger valve.

6. The valve stem seal adopts the upper seal and packing, and the valve plug seal can be realized by pressing the packing gland.

7. The valve stem nut is set on the upper bonnet and rotates the handwheel to drive the plunger valve to open and close.

Seven internal threaded connection right angle plunger valve

1. Flow path: right angle

2, other structural features see serial number 1

Eight. Flange connection right angle plunger valve

1. Flow path: right angle

2, other structural features see serial number 3

Nine. Flange connection pressure balance right angle plunger valve

1. Flow path: right angle

2, other structural features see serial number 4