Installation, Operation and Maintenance Manual
󲷇H-A069-E󲷈 Ball Valve Type2121α Pneumatic Actuated Type AR 15-50mm (1/2”-2”) 4
4. Name of parts
15-50mm (½”-2”)
[1] Body
*1 [6] Stem *1 [23] Actuator
[2] Ball
*1 [7] Seat *1 [165] Base plate
[3] Carrier
*1 [8] O-ring (A) [165t] Tapping screw
[4b] End connector (Flanged end) [9] O-ring (B) *2 [166] Connector plate
[4c] End connector (Socket end) [10] O-ring (C) *2 [166b] Bolt
[4d] End connector (Threaded end) [11] O-ring (D) [166r] Rubber cap
[4e] End connector (Spigot end) [12] O-ring (E) [167] Shaft adapter
[5] Union nut [13] Stop ring
*1. Type 21 and 21α have not compatible.
*2. Type 21 and 21α have not all same parts to make one complete. For details, please consult with your
nearest service station in advance.
Single acting type
Double acting type
Top flange
Bottom stand
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