Product description
The Mark 687 Series is a piloted soft seat regulator for critical pressure reducing applications. It uses balance plug trim with the action of a pilot valve to create a faster, more accurate (meaning less droop as your flows increase) response.Pressure Reducing Valve MK687
Size
- 1-1/2″ – 2″ (DN40 – DN50)
Cv (Kv)
- 1-1/2″ 40 (34)
- 2″: 50 (43)
Seat Materials
- 316SS/PTFE
Body Materials
- Carbon Steel (ASME SA216 WCB) & Stainless Steel (ASME SA351 CF8M)
End Connections
- Threaded & Flanged (ANSI 150#, 300# and DIN PN10/16, PN25/40)
Min & Max Pressure Drop
- 25 psi minimum (1,7 bar)
- 150 psi maximum (10,3 bar)
Features and 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 — ANSI Class VI
- For applications with differential pressures up to 150 psi (10 bar) — on water, air, oil, gas and chemicals
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