Mark 60 Series Pressure Regulators

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 Globe/Cage Style Regulators > Mark 686 Series



MK686 Series The Mark 686 is a cage trim pressure reducing valve that features air-loading, high capacities, accurate regulation, and easy servicing, making it an exceptional choice for your pressure regulating applications. The bottom-entry cage trim allows simple cleaning or repair - all working trim parts can be removed from the body as one assembly. The diaphragm is easily accessible from the top, allowing maintenance without removing the valve from the line.

Features & Benefits




Easy to maintain and service — remove bottom entry to access plug. Diaphragm is accessible from the top
Large effective diaphragm area — for increased accuracy and sensitivity
Large orifices and body passages — provides high flow capacities
Tight shutoff — choice of hard (ANSI Class IV) or soft (ANSI Class VI bubble-tight) seat
For applications with differential pressures up to 300 psi (20,7 bar) — on water, air, oil, gas, steam and chemicals