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FIG 912, 912B

Anti-Siphon Valve w/ Expansion Relief

Anti-siphon valves are used to help prevent the accidental siphoning of a product from a tank in the event of a leak downstream below the liquid level.

Product Features

Standard Features

Valve functions in horizontal and vertical position

Integrated expansion relief set at approximately 25 PSI

Factory preset to several ranges of water column

Maximum working pressure— 200 PSI

-10°F to 200°F operating temperature range

Normally closed

Priming tees and assemblies are available


Construction Details

  • Body: 304/316SS wetted components
  • Disc: FKM

Product Ordering Instructions

Fig Suffix Size Description Weight
912 050500 AV .50” Anti-Siphon Valve w/Expansion Relief, 0-5’ of W.C. 0.87
912 051000 AV .50” Anti-Siphon Valve w/Expansion Relief, 5-10’ of W.C. 0.87
912 051500 AV .50” Anti-Siphon Valve w/Expansion Relief, 10-15’ of W.C. 0.87
912 052000 AV .50” Anti-Siphon Valve w/Expansion Relief, 15-20’ of W.C. 0.87
912 070500 AV .75” Anti-Siphon Valve w/Expansion Relief, 0-5’ of W.C. 0.9
912 071000 AV .75” Anti-Siphon Valve w/Expansion Relief, 5-10’ of W.C. 0.9
912 071500 AV .75” Anti-Siphon Valve w/Expansion Relief, 10-15’ of W.C. 0.9
912 072000 AV .75” Anti-Siphon Valve w/Expansion Relief, 15-20’ of W.C. 0.9
912 100500 AV 1” Anti-Siphon Valve w/Expansion Relief, 0-5’ of W.C. 1.55
912 101000 AV 1” Anti-Siphon Valve w/Expansion Relief, 5-10’ of W.C. 1.55
912 101500 AV 1” Anti-Siphon Valve w/Expansion Relief, 10-15’ of W.C. 1.55
912 102000 AV 1” Anti-Siphon Valve w/Expansion Relief, 15-20’ of W.C. 1.55
912 050510 AT .50” Horizontal Priming Tee with Plug, SS 0.64
912 050511 AT .50” Vertical Priming Tee with Plug, SS 0.82
912 070510 AT 3/4” Horizontal Priming Tee with Plug, SS 0.6
912 070511 AT 3/4” Vertical Priming Tee with Plug, SS 0.6
912 100510 AT 1” Horizontal Priming Tee with Plug, SS 1.25
912 100511 AT 1” Vertical Priming Tee with Plug, SS 1.25
912B 050500 AV .50” Anti-Siphon Valve w/Exp.Relief, BSP Threads 0-5’ of W.C. 0.7
912B 051000 AV .50” Anti-Siphon Valve w/Exp.Relief, BSP Threads 5-10’ of W.C. 0.7
912B 051500 AV .50” Anti-Siphon Valve w/Exp. Relief, BSP Threads 10-15’ of W.C. 0.7
912B 052000 AV .50” Anti-Siphon Valve w/Exp. Relief, BSP Threads 15-20’ of W.C. 0.7
912B 070500 AV .75” Anti-Siphon Valve w/Exp.Relief, BSP Threads 0-5’ of W.C. 0.9
912B 071000 AV .75” Anti-Siphon Valve w/Exp.Relief, BSP Threads 5-10’ of W.C. 0.9
912B 071500 AV .75” Anti-Siphon Valve w/Exp. Relief, BSP Threads 10-15’ of W.C. 0.9
912B 072000 AV .75” Anti-Siphon Valve w/Exp. Relief, BSP Threads 15-20’ of W.C. 0.9
912B 100500 AV 1” Anti-Siphon Valve w/Exp. Relief, BSP Threads 0-5’ of W.C. 1.55
912B 101000 AV 1” Anti-Siphon Valve w/Exp. Relief, BSP Threads 5-10’ of W.C. 1.55
912B 101500 AV 1” Anti-Siphon Valve w/Exp. Relief, BSP Threads 10-15’ of W.C. 1.55
912B 102000 AV 1” Anti-Siphon Valve w/Exp. Relief, BSP Threads 15-20’ of W.C. 1.55
912B 050510 AT .50” Horizontal Priming Tee with Plug, SS, BSP Threads 0.64
912B 050511 AT .50” Vertical Priming Tee with Plug, SS, BSP Threads 0.82
912B 070510 AT 3/4” Horizontal Priming Tee with Plug, SS, BSP Threads 0.6
912B 070511 AT 3/4” Vertical Priming Tee with Plug, SS, BSP Threads 0.6
912B 100510 AT 1” Horizontal Priming Tee with Plug, SS, BSP Threads 1.25
912B 100511 AT 1” Vertical Priming Tee with Plug, SS, BSP Threads 1.25