1/3 HP (.25 kw) - Click Here For Modifications Pressures to 15,000 psi    Flow rates to 3 gpm (12 I/min.)    25 Models    All Hydraulic fluids,  Water-plain or DI,  Solvents, Mild chemicals,  Liquefied gases
3/4 HP (.56 kw)    Pressures to 15,000 psi    Flow rates to 2-4 gpm (9.0 I/min.)    9 Models    Hydraulic fluids: Petroleum Base, HWCF& 95/5,   Plain water,  Liquified gases
1.5-2.2 HP (1.12-1.6kw)    Pressures to 100,000 psi    Flow rates to 2-4 gpm (9.0 I/min.)    97 Models   Same as 1/3 HP  Modifications also available for  temperature extremes.
6 HP (4.5 kw) Pressures to 10,000 psi Flow rates to 15 gpm (56 I/min.)   20 Models    All Hydraulic fluids,  Water-plain or DI,  Solvents
8 HP (6.0 kw) Pressures to 22,500 psi Flow rates to 12 gpm (45 I/min.)   9 Models    All Hydraulic fluids,  Water-plain or DI,  Solvents,  Liquified gases
10 HP (7.5 kw) Pressures to 36,000 psi Flow rates to 3 gpm (12 I/min.)    2 Models    All Hydraulic fluids,  Water-plain or DI,  Solvents, Liquified gases

Why use Haskel Air Driven Pumps?

Haskel air driven pumps offer many advantages over conventional electrical driven units as follows: Ability to stall at any predetermined pressure and hold this fixed pressure without consuming power or generating heat. No heat, flame or spark risk. Infinitely variable cycling speed output. Up to 100,000 psi (7,000 bar) pressure capability with special units to 150,000 psi (10,000 bar). Easy to apply automatic controls. No limit or adverse effect to continuous stop/start applications. Air drive does not require an external line lubricator thus saving on running cost and preventing oil vapor contamination of the surrounding environment. Reliable, easy to maintain, compact and robust. Haskel products are backed by an international network of highly trained distributors with application engineering expertise who can provide a complete problem solving service. Key Features: Wide range of modifications and control options Noise reduction kits for selected models Unbalanced cycling spool provides immediate operation in response to output pressure change Suitable for large variety of liquids and liquified gases Bottled gas, boil off from a liquified tank or natural gas can be used as an alternative to air drive Range of standard and specially built systems Ability to design and manufacture systems to customer specifications

What is a Haskel Air Driven Liquid Pump ?

Haskel  air  driven liquid  pumps work  on an automatic reciprocating differential area principle that uses a large area air drive piston connected to a smaller  area hydraulic piston/plunger to convert compressed air power into hydraulic power. The nominal ratio  between the  area of  the air drive piston  and the  hydraulic piston is  indicated by the dash number in the model description and approximates the  maximum  pressure  the  pump is  capable of  generating.  Unlike other air driven pumps the  actual  ratio  is  approximately  15% higher than the  nominal so that the pump will still cycle when the ratio of the output  hydraulic pressure  to the  air drive   pressure  equals  the nominal  ratio.  For  example  an  AW-35  has  an actual  ratio of  40:1. Example: If air drive piston area =25.9sq.in. (167sq.cm) and liquid piston area =0.65sq.in (4.2sq.cm) then actual pump ratio =40:1 and nominal pump ratio =35:1 If air drive pressure =75 psi  (5.2 bar) the maximum outlet    stall pressure will be close to 40x75 =3000psi (204 bar) (depending on friction) If the air drive  pressure is  increased to 100 psi  (7 bar)  then minimum  outlet pressure may be close to 4000 psi (272 bar) at stall.

When compressed air is  first applied  to the  pump it  will cycle  at its  maximum speed   producing maximum  flow  and  act  as  a  transfer  pump  filling the  pressure receiver   with liquid. The pump will then gradually start to cycle at  a slower  rate as the pressure in the receiver increases and offers more resistance  to the  reciprocating differential piston assembly, until  it stops  (stalls) when  a balance  of forces  is reached.   i.e., when air drive pressure x air drive piston area  = stall  pressure x driven hydraulic piston area. The  hydraulic  pressure  drop  (hysteresis) required  to cause  the Haskel  air driven pump to restart is  extremely small  due to  the very  low frictional  resistance offered   by the large diameter air drive piston seal  and hydraulic  seal. Under ideal conditions   (lubricity, etc.) this can be as low as two PSI times the pump's ratio. Output Horsepower Ratings Nominal  horsepower  ratings  use  85  psi  (5.5 bar)  air   drive  pressure   and  are approximate. They assume  an ample air supply  at adequate pressure at the pump. Inadequate air drive pipe line sizes, dirty air filters, etc.  can effect  the performance of any  pump.  Peak  hp  is obtained  at approximately  75% of  nominal ratio x air drive pressure.  i.e.100:1 pump being driven at 100 psi (7  bar) will produce peak  power at  a hydraulic output pressure of approximately 100 x 100 x 0.75 = 7500 psi (517 bar).  Double and Triple Air Head Pumps The  pressure  capability  of  the  pumps in  the 1.5  horse  power  (hp)  (1.12 kw)  range can  be extended  by  stacking  air  pistons  on top  of each  other to  double  or triple  the intensification  ratio without  changing the hydraulic piston.  The double  or triple  air  head  pumps  consume  less air  than competitors  pumps  with a  single air piston of  equivalent area  since only one of the two or three heads  is pressurized on the return stroke. The  addition  of  a  second and  third air  head increased  the  pump  hp  from approximately 1.5  to 2  hp (1.12 kw). Double  air  head  pumps are  identified by  the last  digit 2  in the  pump model number. Thus,  a nominal  50:1 ratio pump with  two air  heads is  described as  a 52, similarly, a triple air head pump is identified  with a last digit 3. Thus a 900 ratio pump with 3 air  heads is described as a 903.

Pump Selection Assistance   Call (800) 576 - 6308

M	1" stroke 1/3 hp miniature pump series.	XH	2" stroke 1.5 + 2 hp Extreme High Pressure Pump series.
S	Stainless steel hydraulic piston and body.	G	4-1/2" stroke 6 hp Pump series
MCPV	1/3 hp Chemical Pump.	8"	4-1/2" stroke 8 hp Pump series.
D(prefix)	Pump incorporates a Distance Piece.	14"	4" stroke 10 hp Pump series.
D(suffix)	Double Acting Pump.	W	Polyurethane U-cup dynamic seal.
4B	1" stroke 3/4 hp Pump series (bottom inlet only)	F	UHMWPE (Ultrahigh molecular weight polyethylene dynamic seal)
A	2" stroke 1.5 + 2 hp Pump series	T	Reinforced Teflon dynamic seal.
H	2" stroke 1.5 + 2 hp High Pressure Pump series.	V	*Viton®-Ring static seal.
		-B	Bottom inlet.

One of the more important features of the Haskel pump is the seal assembly for the hydraulic piston. Haskel's expertise in this field is considerable. Longer life and more versatile seals are continually being developed by Haskel to meet demanding applications. Liquids compatible with Haskel Pumps To  assist  in  easier  pump  selection,  we  have  allocated  below  a  service  code  number against  certain  popular liquids,  classified in  groups. These service code  numbers are referred  to  in  the  tables  "Wetted  materials  of  construction  and  services"  which  are  provided  throughout  this catalog   under each pump series. i.e.  Page 7 for 1/3 HP "M" series pumps. For other liquids consult factory.

SERVICES Service Code Petroleum base oils, Kerosene, Diesel fuel, Water with 5% soluble oil. Plain Water. Most Phosphate Ester base fire resistant hydraulic fluids: e.g., Pydraul, Lindol, Cellulube, Fyrquel, and Houghtosafe 1120 and Petroleum base solvents compatible with UHMWPE (Ultrahigh Molecular Weight Polyethylene) dynamic, and *Viton® static seals. Petroleum  base  solvents,  e.g.,  Boron  fuels,   Aromatic  hydrocarbons   (Benzene,  Toluene, Xylene, Hylene, etc.); Chlorinated solvents (Trichloroethylene, Carbon Tetrachloride, Chlorobenzene, etc.); Mecaptans,  Dowtherm A,  Fluoronated solvents (Fluorobenzene, Fluorochloroethylene,  etc.); Dowtherm  E, plus  all of  group 3 plus some mildly corrosive acids compatible with wetted materials. See note [6] for service with Methyl-Ethyl-Ketone, Methyl Acetone, Diacetone, Alcohol and Freon 22.  Skydrol and Aerosafe hydraulic fluid. Acetone and some alcohol's (Ethyl, Methyl and Isopropyl). Also suitable for these fluids if &*Viton® static seals replaced with EPR, specify modification number 51331 (no extra charge), e.g, 51331-MDTV-5. (Most Phosphate Estar base fluids solidify at approximately 30,000 psi.) Deionized water.H NOTE: Dynamic seal life with non-lubricating fluids will understandably be less than with lubricating types. OPERATING TEMPERATURES  Air Drive Section +25" thru +150 f (low temperature seals are available. Please consult factory).    Liquid Section For reasonable seal life, high temperatures should be limited to 125' -- 130 F for the "F" or "W" seal models; 275 F for the "T" or "TV" seal   models (with distance piece). Factory Assistancet Circuit assistance is available. Please consult with the factory or any authorized Haskel distributor for further information.  Call (800) 576-6308 or email for assistance.

*Viton® is a registered trademark of Dupont Dow Elastomers. Haskel International, Inc. is the world's leading manufacturer of pneumatically driven, high-pressure liquid pumps, gas boosters, air pressure amplifiers, and high pressure systems.

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