Haskel DSTV-35 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: 1.5HP
- Air Head: single
- Max Air Pressure: 150 psi
- Max cycles: 80/min.
- Nominal ratio (“dash number”): 35:1
- Actual area ratio: 40:1
- Max outlet pressure (continuous): 5700 psi
- Max outlet pressure (intermittent): 5700 psi
- Displacement / cycle: 1.16 cu.in.
- Max flow: 348 cu.in. / min.
- Air inlet connection: 1/2″ FNPT
- Liquid inlet connection: 1/2″ FNPT
- Liquid outlet connection: 1/2″ FNPT
Typical Performance Characteristics (@100 PSIG air supply pressure):
- 350 in3/min @ 2000 psig
- 98 in3/min @ 3600 psig
Materials of Construction:
- Pump section: Separation – All SS
- Plunger: 440C SS hard-chrome plated
- Non-metallics: PTFE, Viton
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: 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: N/R
Haskel DSTV-35 Liquid Pump Repair kit information:
- Fluid section seal kit P/N: 17993-35
- Air drive seal kit P/N: 16772
- Air valve seal kit P/N: 16771
- Distance piece seal kit P/N: 17327
- Optional tools: 28584 (Sleeve removal tool); 29370 (for installing ring on 1/2″ check valve)
- Notes: Seal installation tool is included in fluid section kit.
Optional Modifications:
- 16821: Low air pressure control feature. For operating air pressures as low as 3 to 4 psi. 45 psi minimum pilot air required.
- 16831: Low temperature modification. For special sealing in air drive for operating temperatures as low as -20°F up to normal +120°F.
- 16834: Exhaust adapter. With back pressure balance piston.
- 27964: Interconnecting inlet-outlet tubing. 1/2″ female for 4:1 ration pumps (ATV-4 or DTV-4).
- 28000: Threaded vent (or purge) ports on standard distance piece (except 1.5:1 ratio).
- 29376: Three-way cycling spool. For 1.5HP and 2HP single-acting pumps, for use with CO2.
- 29702: Single-stroke modification.
- 51050: Extreme service cycling modification. Not recommended for long stall periods.
- 51056: Exhaust/pilot vent combination.
- 51331: EPR static seals for liquid section. Applies to distance piece pumps only.
- 51345: Sour gas drive provision to NACE specifications. 1.5HP to 2.2HP distance piece pumps only, single air head and double air head.
- 52788: Viton seals in air drive section.
- 53925: Severe Arctic low temperature service. 25:1, 35:1, 60:1, 100:1, 150:1, 151:1, 225:1, 300:1 and 450:1 ratios.
- 54885: Rotate pump body 90° from standard.
- 54935: SS trim for 5/3 air drive.
- 55516: Polyurethane (“W”) seal. For TV-series pumps, except high output models.
- 59353: Noise reduction kit fitted. Not available on AFD, DFD, ASFD, or DSFD.
- 82460: HNBR seals in air drive section.
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 SKIS-002 SKIS-005 SKIS-014
