M&J Valve was founded in 1962 by Marvin Grove and has been a leader in the pipeline DIVERTER VALVE CYCLE IN BI-DIRECTIONAL PROVER valve industry since its inception. Now part of Celeros Flow Technology, the M&J Valve brand meets or exceeds the quality standards of our customers and the valve industry. With a product offering of slab and expanding through-conduit gate valves, axial surge valves and rotary control valves, piston and swing check valves. Celeros can provide a wide variety of flow control solutions for liquid, geothermal and gas markets. This combination of products, technical know-how...

4-WAY DIVERTER VALVE DIVERTER VALVE CYCLE IN BI-DIRECTIONAL PROVER The widely accepted "Pressure Gauge Seating Method" for proof of "Double Block and Bleed Type Seals" has been simplified with the use of the Differential Pressure Gauge. Our 4-Way valves are supplied with a 0-50 psi differential pressure gauge. The differential check relief valve assembly is set to hold a 25 psi lower pressure in the body than the prover or valve port. The 25 psi differential is indicated on the 0-50 psi differential pressure gauge which is easy to read. The Differential Pressure Gauge Seating Method is simple,...