SVB Safety Valves

Watson McDaniels

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The SVB Safety Valves are used for over-pressure protection on unfired pressure vessels in saturated steam systems. Valves are 100% factory tested and made in the USA.

Catalog Spec Sheet (pdf)

I&M (pdf)


• Stainless Steel springs
• Teflon®-PFA seat resists corrosive boiler chemicals
• Two control rings for maximum performance and adjustability
• Tapped body drain allows piping of condensate away from valve to protect the internals from fouling

How It Works:

In the event steam pressure increases to the set point, the safety valve will “pop open” discharging steam faster than it can be produced; allowing system pressure to return to safe levels at which point the valve will close.

1) Ratings are 90% of actual capacity.
2) For Set Pressures over 250 PSIG, Consult Boiler Technologies.
3) For other sized, consult Boiler Technologies.

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