Valve Parts Terms and Abbreviations

Valve Construction and Part Terms
1 Face to face dimension 18 Stuffing box 35 Name Plate
2 Type of construction 19 Stuffing box 36 Handlwheel
3 Through way type 20 Gland 37 Packing Nut
4 Angle type 21 packing 38 Lock Nut
5 Y-type 22 Yoke 39 Wedge
6 Three way type 23 Dimension of valve stem head 40 Disc Holder
7 Balance type 24 Type of connection 41 Seat Screw
8 Normally open type 25 Wedge disc 42 Body End
9 Normally closed type 26 Flexible gate disc 43 Hinge Pin
10 Body 27 Ball 44 Disc Hanger
11 Bonnet 28 Adjusting bolt 45 Hange Nut
12 Disc 29 Spring plate
13 Disc 30 Diaphragm
14 Seat ring 31 Disc
15 Sealing face 32 Ball float
16 Stem 33 Bucket float
17 Yoke bushing 34 Dimension of valve stem end
Valve Capability Terms
1 Nominal pressure 11 Leakage
2 Nominal diameter 12 General dimension
3 Working pressure 13 Connection dimension
4 Working temperature 14 Lift
5 Suitable temperature 15 Maximum flow rate
6 Shell test 16 Maximum allowable pressure
7 Shell test pressure 17 Operating pressure
8 Seal test 18 Maximum operating pressure
9 Seal test pressure 19 Operating temperature
10 Back seal test 20 Maximum operating temperature
Fitting Terms and Abbreviations 
Female solder cup C
Male solder end Ftg
Female NPT thread F
Male NPT thread M
Standard hose thread Hose
Female end for soil pipe Hub
Male end for soil pipe Spigot
Used with mechanical coupling No Hub
Actual tube outside diameter O.D. Tube
Straight thread S
Slip joint SJ
Flared FL