Haskel 28940-1 Air Pilot Valve
Features & Benefits:
- Seated poppet or ball design for virtually zero leakage at high pressures with low viscosity fluids.
- They are NOT “bubble-tight” on gases.
- Normally-open models will generally hold a tighter seal on low viscosity liquids or gases because the seating force does not depend on the inlet pressure.
- Directly air-actuated for ideal system compatibility in wet or hazardous areas, or when used with air-driven pumps or boosters. Yet, if electronic or electrical control is preferred, they can be actuated with any of a wide selection of sub-miniature 3-way solenoid air valves available from many manufacturers.
- Employ the same basic area-ratio principle used in Haskel pumps, enabling high forces to be easily and directly controlled from low pressure plant main or instrument air.
- Although not normally considered for pressure control, all of the normally-open 2-way models can do double-duty in a circuit by also providing safety relief function simply by installing a small air regulator in the pilot line.
Haskel 28940-1 Air Pilot Valve Specifications:
- Type: 2-Way
- Normal Position: Closed
- Nominal Area Ratio for Actuation: 250:1 (1st Stage); 9:1 (2nd Stage)
- Max Inlet Pressure (with 100 psig air pilot): 15,000 psig
- Cv (min.): 0.1 (1st Stage); 1.50 (2nd Stage)
- “P”, “C” or “B” Port Size: 1/2″ FNPT
- “P”, “C” or “B” Port Max Pressure: 15,000 psig
- “T” or “A” Port Size: 1/2″ FNPT
- “T” or “A” Port Max Pressure: 10,000 psig
- Materials of Construction (liquid section): Plated Steel, Buna-N, PTFE
- Length: 4-7/8″
- Hex Size: 1-3/4″
- Weight: 2.75 lbs.
- Air Pilot Port Size: 1/8″ FNPT
- Remarks: 2-stage decompression and release
Product Catalog: High Pressure Valves and System Components Catalog
