Model DSTV-1.5 Liquid Pump

1.5HP Liquid Pump


Haskel Model DSTV-1.5 1.5 HP Air-Driven Liquid Pump

Catalog literature: Liquid Pump Catalog.pdf Acrobat DC

With a nominal pressure ratio of 1.5:1, the Haskel model DSTV-1.5 1.5 HP air-driven liquid pump utilizes a single air head to boost liquid pressures to a maximum of 300 PSIG.

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 modification 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: 1.5 HP
  • Air Head: single
  • Max Air Pressure: 150 PSIG
  • Max cycles: 80/min.
  • Nominal ratio (“dash number”): 1.5:1
  • Actual area ratio: 1.6:1
  • Max outlet pressure (continuous): 160 PSIG
  • Max outlet pressure (intermittent): 300 PSIG
  • Displacement / cycle: 31.90 cu. in.
  • Max flow: 5104 cu. in./min.

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

  • 5000 in3/min @ 50 psig
  • 1000 in3/min @ 150 psig

Materials of Construction:

  • Pump section: Separation – All SS
  • Plunger: 17-4PH SS
  • Non-metallics: PTFE, Viton


  • Service Code 1: Petroleum-based oils, kerosene, ethylene glycol, water with 5% soluble oil.
  • Service Code 2: Plain water, diesel fuel
  • Service Code 3: Most phosphate ester-based fire-resistant hydraulic fluids (e.g. Pydraul, Lindol, Cellulube, Fyrquel and Houghtosafe 1120) and petroleum-based solvents compatible with UHMWPE (Ultra-high Molecular Weight Polyethylene) dynamic seals and Viton static seals.
  • Service Code 4: Petroleum-based solvents / aromatic hydrocarbons (e.g. benzene, toluene, xylene, hylene, etc.); chlorinated solvents (trichloroethylene, carbon tetrachloride, chlorobenzene, etc.); mercaptans; Dowtherm A; fluorinated solvents (fluorobenzene, fluorochloroethylene, etc.); Dowtherm E; plus all of Group 3 and some mildly corrosive acids compatible with wetted materials.
  • Service Code 5: Skydrol and Aerosafe hydraulic fluid; acetone and some alcohols (ethyl, methyl, and isopropyl).
  • Service Code 6: De-ionized water; demineralized water


Repair kit information:

  • Fluid section seal kit P/N: 50079
  • Air drive seal kit P/N: 17838
  • Air valve seal kit P/N: 16771
  • Distance piece seal kit P/N: N/A
  • Optional tools: 28584 (Sleeve removal tool); 28627 (for installing ring on 3/4″ check valve); 28407 (for installing ring on 1″ check valve)
  • Notes: Seal installation tool is included in fluid section kit.
  • Installation documents: SKIS-001  SKIS-002  SKIS-008