Espresso PartsSKU: W10837

1/4" Anti-Vacuum Valve


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Details

Also called siphon, anti-siphon or vacuum breaker valve. This valve allows air to escape the boiler as the water heats up, hissing and then closing off when the boiler water reaches it's operating temperature, sealed by the steam pressure created. Measure your existing valve: the outside of the male threads of a 1/4" BSP fitting measure 1/2". One may also use part W_517.

While it is recommended to install this valve in a vertical orientation (as pictured) it can and will function in a horizontal position.

Gaskets are not always required; as the valve and boiler expand any small leaks at the junction will likely disappear forever. A good rule of thumb: if your valve and boiler had a gasket, get a new replacement for added assurance.

Stainless steel made available as of 06/01/2019.

Cross-references:

Part number Manufacturer
I..990 ASCASO COFFEE MACHINES
W10836 ASCASO
56150 ASTORIA
5965070 BEZZERA
7452511 BEZZERA
3630001 BFC
418-932-000 CIMBALI
C219900561 ECM MANUFACTURE
3161134654 FAEMA
5.0.000.1002 FIAMMA RST
1200300045 GRIMAC
GR037 GRIMAC
1066125 LAVAZZA
10066400 LAVAZZA
10082685 LAVAZZA
L190 MARZOCCO (theirs have a lower fitting that is zinc-coated)
700750 NUOVA RICAMBI
56150 MCE
D56150 ORCHESTRALE
3630001 ROYAL
528124 VFA EXPRES
WY56150 WEGA

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Attention CA Residents: Prop 65 Warning

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

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