or the difference between two points depending on how you plumb the 1/8" NPT and barb fittings

Can I use this on a Beckett gas burner

Two Position Cumulator

This specific configuration operates with 0-second pre-purge and 0-second inter-purge timings

It is designed to interface seamlessly with M411

Conbraco 10-418-12 Valve 322056-301 or the difference between twoThe Conbraco 10 418 12 Valve is a high performance ASME Section IV hot water pressure relief valve designed specifically for the protection of heating boilers and hydronic systems. Featuring a heavy duty bronze body and a corrosion resistant stainless steel spring, this valve is engineered for durability in high demand mechanical rooms. The 3 4" Female NPT inlet and outlet connections provide a standard fit for most residential and commercial boiler