Haskel 4B-21 Liquid Pump

Haskel 4B-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: 0.75HP
• Air Head: single
• Max Air Pressure: 100 psi
• Max cycles: 225/min.
• Nominal ratio (“dash number”): 21:1
• Actual area ratio: 24:1
• Max outlet pressure (continuous): 2300 psi
• Max outlet pressure (intermittent): 2300 psi
• Displacement / cycle: 0.60 cu.in.
• Max flow: 285 cu.in. / min.
• Air inlet connection: 1/2″ FNPT
• Liquid inlet connection: 3/4″ FNPT
• Liquid outlet connection: 1/2″ FNPT

Typical Performance Characteristics (@100 PSIG air supply pressure):

• 270 in3/min @ 1000 psig
• 120 in3/min @ 2000 psig

Materials of Construction:

• Pump section: Aluminum
• Plunger: Aluminum (hard coated)
• Non-metallics: UHMWPE, 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: N/R

Haskel 4B-21 Liquid Pump Repair kit information:

• Fluid section seal kit P/N: 57342
• Air drive seal kit P/N: 57340
• Optional tools: 28584 (Sleeve Removal Tool)

Optional Modifications:

• 57639: Low air drive pressure. Allows user to regulate drive air to as low as 3 psi.
• 59354: Noise reduction kit fitted.
• 81575: Changes the “F” seal to a “W” seal. Recommended for use with water.
• 82104: Viton air drive seals.

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-001