SPENCE Atmospheric Vacuum Breaker, Steam Service: MNPT, 1/8 in Pipe Size, For Steam Media
The SPENCE Atmospheric Vacuum Breaker (MPN VB0125-SS) is a 1/8 in pipe size, MNPT steam service device rated for steam media up to 350°F. 3G Electric interprets this demand and delivers the genuine OEM part, backed…
SKU 3G-OTH-597070
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Product Description
The SPENCE Atmospheric Vacuum Breaker (MPN VB0125-SS) is a 1/8 in pipe size, MNPT steam service device rated for steam media up to 350°F. 3G Electric interprets this demand and delivers the genuine OEM part, backed by specialist expertise in controls across 14 industrial departments — and we supply far more than is listed.
Frequently Asked Questions
What is a SPENCE atmospheric vacuum breaker used for?
A SPENCE atmospheric vacuum breaker prevents back-siphonage in steam systems by admitting air when pressure drops. The VB0125-SS model is designed for steam media up to 350°F with 1/8 in MNPT connections, protecting equipment from vacuum damage in industrial piping.
What are the specifications of the SPENCE VB0125-SS?
The SPENCE VB0125-SS is a 1/8 in pipe size, MNPT steam service atmospheric vacuum breaker rated for steam media up to 350°F. It is manufactured by SPENCE under part number VB0125-SS and is suitable for steam system vacuum protection applications.
Where to buy a SPENCE atmospheric vacuum breaker worldwide?
3G Electric supplies the genuine SPENCE VB0125-SS atmospheric vacuum breaker to worldwide customers. We handle full logistics, customs clearance, and delivery for global orders, leveraging our specialist expertise in controls across 14 industrial departments to ensure you get the right part.
How to install a SPENCE atmospheric vacuum breaker?
Install the SPENCE VB0125-SS in a vertical position on the steam line, with the vent facing downward. Use thread sealant on the 1/8 in MNPT connection and ensure the device is accessible for inspection. Follow standard steam system practices for vacuum breaker placement to prevent back-siphonage.
Used in
Common applications for SPENCESPENCE Products
3G Electric supplies SPENCE atmospheric vacuum breakers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.


