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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Using an OEM boiler gasket replacement like the 302500 ensures exact bolt-hole alignment and thickness specifications
Does this gasket fit other Spence valve sizes
Industrial Durability: Rugged design withstands the high-torque demands of hydronic balancing and automated temperature regulation
This switching relay provides reliable control for blower motors
Designed for professional field service
Maxitrol 12A39 Vent Limiter Using an OEM boiler gasketThe Maxitrol 12A39 Vent Limiter is a critical brass gas regulator accessory engineered for indoor gas pressure regulator installations where piping a vent line to the outdoors is impractical or prohibited by code. This 3 8" NPT automatic vent limiter features a precision machined ball check valve mechanism that permits free inhalation for sensitive diaphragm movement during normal operation but limits gas escape to within ANSI Z21. 80 and ANSI Z21. 18