Haskel MS-21 Liquid Pump

Haskel MS-21 Liquid Pump

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: All SS
• Plunger: 316SS
• Non-metallics: UHMWPE, PTFE, Buna

Applications:

• Service Code 1: Petroleum-based oils, kerosene, ethylene glycol, water with 5% soluble oil.
• Service Code 2: Plain water, diesel fuel
• Service Code 3: N/R
• Service Code 4: N/R
• Service Code 5: N/R
• Service Code 6: De-ionized water; demineralized water

Haskel MS-21 Liquid Pump Repair kit information:

• Fluid section seal kit P/N: 26410-21
• Air drive seal kit P/N: 17178
• Air drive seal kit (VITON seals) P/N: 29003
• Optional tools: 55763-21 (Seat Insertion Tool)

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.
• 51788: Piped exhaust – standard. Provides connection ports for drive and pilot exhausts. Enables under tank top mounting and/or natural gas drive.
• 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