Haskel 51811-M-21 Liquid Pump
THIS PUMP INCLUDES THE OPTIONAL “51811” EXTERNAL PILOT MODIFICATION.
Features & Benefits:
- Safe pneumatic operation – no heat, flame or spark risk
- Infinitely variable cycling speed
- Stall at pre-determined pressure to hold that pressure without consuming power
- Problem-free stop/start applications
- Easily automated – many modifications and control options
- Suitable for most liquids and liquefied gases
- Alternative gas drive options available, such as sour gas, natural gas, boil off gases, or nitrogen
- Robust, reliable, compact and easy to maintain proven design
- No need for air line lubrication – saves costs and prevents contamination
- Unbalanced cycling spool provides immediate response to pressure changes
- Can be manufactured to ATEX, CE and NACE
Technical Data:
- Power: 0.33HP
- Air Head: single
- Max Air Pressure: 125 psi
- Max cycles: 325/min
- Nominal ratio (“dash number”): 21:1
- Actual area ratio: 22:1
- Max outlet pressure (continuous): 2600 psi
- Max outlet pressure (intermittent): 2600 psi
- Displacement / cycle: 0.20 cu.in.
- Max flow: 130 cu.in. / min.
- Air inlet connection: 1/4″ FNPT
- Liquid inlet connection: 3/8″ FNPT
- Liquid outlet connection: 1/4″ FNPT
Typical Performance Characteristics (@100 PSIG air supply pressure):
- 90 in3/min @ 1500 psig
- 48.9 in3/min @ 2000 psig
Materials of Construction:
- Pump section: Cad-plated steel, Aluminum, SS
- Plunger: 416SS
- Non-metallics: Urethane, PTFE, Buna
Applications:
- Service Code 1: Petroleum-based oils, kerosene, ethylene glycol, water with 5% soluble oil.
- Service Code 2: N/R
- Service Code 3: N/R
- Service Code 4: N/R
- Service Code 5: N/R
- Service Code 6: N/R
Haskel 51811-M-21 Liquid Pump Repair kit information:
- Fluid section seal kit P/N: 17179-21
- Air drive seal kit P/N: 17178
- Air drive seal kit (VITON seals) P/N: 29003
- Optional tools: 55763-21 (Seat Insertion Tool)
Additional Optional Modifications:
- -HP: Hand pump attachment (with handle). Provides manual operation of pump for precision pressure control or use without air pressure.
- 26220-2: Hand pump attachment kit.
- 29002: Viton air drive seals.
- 51794: Piped exhaust – sour gas. With hand pump (HP).
- 51794-2: Piped exhaust – sour gas. Without hand pump (HP).
- 53175: Level II cleaning.
- 53304: High pressure outlet port. Fits 1/4″ OD high pressure coned-and-threaded tube.
- 53935: Low temperature drive. Enables operation down to 5°F. Some sacrifice of seal life at normal temperature.
- 57905: No return spring. Provides improved fill on suction stroke when pumping liquified gases by utilizing the inlet pressure.
- 59888: Cycle timer installed.
- 80103: Noise reduction kit fitted.
- 82367: SS trim for 1/3-HP drive.
To add any modifications to this pump or for assistance in selecting the right pump for your application, please contact our Sales Department for assistance.
Product Catalog: Haskel Liquid Pumps
Installation documents: SKIS-011
