1

Body

Main   parts of the valve that are directly connected to the pipe (or machine   equipment) and control the flow of the medium

2

Bonnet

The   valve body is connected to the valve body (or through other parts, such as   diaphragms) to form the main part of the pressure chamber

3

Wedge

A   general term for parts used to cut or regulate the flow of a medium, such as   a gate in a gate valve, a valve flap in a throttle valve,   etc.

4

Disc

Opening and closing parts in valves such as globe valves , throttle valves, check valves, etc.

5

Seat   ring

a   part mounted on the valve body and forming a sealing pair with the opening   and closing member

6

Sealing   face

The   opening and closing member is closely fitted with the valve seat (valve   body), and the two contact surfaces for sealing function

7

Stem

Passing   the opening and closing force to the main part on the opening and closing   member

8

Yoke   bushing

Parts   that form a motion pair with the stem thread

9

Stuffing   box

a   structure on the bonnet (or valve body) that is filled with packing to   prevent the medium from leaking from the valve stem

10

Gland

a   part used to compress the packing to achieve sealing

11

Packing

Filling   the stuffing box (or stuffing box) to prevent the media from leaking from the   valve stem

12

Packing   seat

Supporting   filler, part that keeps packing sealed

13

Yoke

a   part for supporting the stem nut and the transmission mechanism on the gland   or valve body

14

Back   seat

A   sealing structure that prevents the medium from penetrating into the stuffing   box when the valve is fully open

15

Pressure   seat

Mechanism   for automatically sealing a valve body and a valve cover by using medium   pressure

16

Impact   hand wheel

Handwheel   structure that utilizes impact force to relieve valve operating force

17

Type   of connection

Various   means of connection of valves to pipes or machinery (eg flange connections,   threaded connections, welded connections, etc.)

18

Wedge   disc

The   opening and closing parts in the gate valve are of single gate, double gate   and elastic gate.

19

Single   gate disc

a   rigid shutter structure manufactured in one piece

20

Double   gate disc

A   ram structure consisting of two rams

21

Flexible   gate disc

A   shutter structure capable of generating elastic deformation

22

Ball

Opening and   closing member in ball valve

23

Disc

Opening and   closing part in butterfly   valve

24

Diaphragm

Opening   and closing member in diaphragm valve

25

Plug

Opening and   closing member in the plug valve

26

Hinge   pin

a   fixed axis around which a valve flap rotates in a swing check valve

27

Arm

In   a swing check valve, a part that connects the valve disc to the pin shaft and   rotates around the pin shaft

28

Throat   diameter

Safety   valve seat passage diameter of the smallest section

29

Adjusting   bolt

Sleeve   parts for adjusting the amount of spring compression in safety valves

30

Spring   plate

Part   of the safety valve supporting the spring

31

Valve   guide

a   part of the safety valve that guides the valve flap

32

Disc   holder

The   safety valve is connected to the valve flap to change the flow direction of   the medium and increase the opening height of the part.

33

Adjusting   ring

The   safety valve is connected to the valve seat or the guide sleeve to adjust the   opening and closing pressure difference

34

Regulation   spring

a   spring used to set the outlet pressure in a pressure reducing valve

35

Returnning   spring

a   spring used to reset the opening and closing member in the pressure reducing   valve

36

Diaphragm

a   part of a pressure reducing valve that acts as a pressure after the balance   valve

37

Disc   plate

Opening and   closing member in disc trap

38

Inverted   bucket

Bell-shaped   parts that actuate the flap in the trap

39

Ball   float