High Pressure Air Driven Liquid Pumps

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ProTech Pumps has more than 50 years of hydraulic and pneumatic engineering experience in the design and manufacture of pumps and systems for pressure testing and chemical injection.

ProTech Air Driven Liquid Pump Design

Our range of liquid pumps are pneumatically driven, reciprocating plunger pumps. The pumps are ratio devices that utilise low pressure compressed air to drive a larger diameter piston (area x pressure), which is linearly connected to a smaller hydraulic piston/plunger. Using this ratio principal, a higher hydraulic pressure can be generated. Materials of construction include an all stainless steel wetted end and polyurethane pressure seals as standard. Specialised construction materials and special seals are also available on request. The liquid pumps are compact and lightweight, require no airline lubrication and are suitable for use in water, oil and most chemical applications. Every ProTech Liquid Pump is available as a standalone pump unit or alternatively as a complete packaged system. Click here for more on our ProPak liquid pump systems.

Choosing the right Air Driven Liquid Pump

ProTech liquid pump model numbers reflect the pump’s nominal pressure ratio, that is, how many times greater pressure can be generated from the air drive pressure. You need to use these ratios, along with your specific output pressure requirements to select your pump. The table further down the page allows you to review and compare the key technical data across the liquid pump range. In addition, we categorise our pumps into different series based on the size of the air drive and the stroke length. Our different series are outlined below.
Read our Guide to Selecting your Air Driven Liquid Pump for more detailed, step-by-step help . If you need further assistance with your selection, please contact us here or via phone on 07 3103 5190.

PM Series – Air Driven Liquid Pumps

The PM series are the smallest liquid pumps in the range, and are sometimes known as a mini liquid pumps. The pumps are single acting, single 80mm air drive units that are capable of pressures in excess of 11,000 PSI / 800 BAR. Their size makes them a good replacement for a hand pump or for pressure testing applications where small vessels are being tested.

PX Series – Air Driven Liquid Pumps

The PX series of liquid pumps are single acting, single 100mm air drive units that are capable of pressures in excess of 15,000 PSI / 1,040 BAR. A slightly bigger pump than then PM series, the PX liquid pumps deliver approximately 3 times more flow at given pressures than the PM series.

PXD Series – Air Driven Liquid Pumps

The PXD series of liquid pumps are double acting, single 100mm air drive units that are capable of pressures in excess of 11,000 PSI / 750 BAR. The double acting feature means that fluid is pumped on both strokes of the pump, giving greater efficiency as well as more flow for the same volume of air consumed.

PG Series – Air Driven Liquid Pumps

The PG series of liquid pumps are single acting single 160mm air drive units that are capable of pressures in excess of 45,000 PSI / 3,200 BAR. Larger again, the PG series of liquid pumps delivers approximately 4 times the flow of the PX series at given pressures.

PGD Series – Air Driven Liquid Pumps

The PGD series of liquid pumps are double acting single 160mm air drive units that are capable of pressures in excess of 45,000 PSI / 3,200 BAR. The largest double acting pump in the ProTech range, these pumps pump fluid on both strokes, giving greater efficiency as well as more flow for the same volume of air consumed.

Review and compare key technical data across all models using the table below:

Model No.	Actual Ratio	Displacement Per Cycle	Max Outlet Pressure	Typical Performance @ 90 psi air drive	Typical Performance @ 90 psi air drive	Price (Tax Excl.)	Availability*
2PG512	512:1	0.24 cu in / 3.93 cc	61,610 psi / 4,249 BARG			$2,474.97 ex tax	Assembled to order
2PG630	640:1	0.19 cu in / 3.18 cc	77,024 psi / 5,312 BARG			$3,209.31 ex tax	Assembled to order
2PGD120	130:1	2.87 cu in / 47.12 cc	15,645 psi / 1,079 BARG			$3,127.71 ex tax	Assembled to order
2PGD150	160:1	2.33 cu in / 38.17 cc	19,256 psi / 1,328 BARG			$3,127.71 ex tax	Assembled to order
2PGD18	20:1	17.97 cu in / 294.52 cc	2,407 psi / 166 BARG			$2,991.73 ex tax	Assembled to order
2PGD180	200:1	1.84 cu in / 30.16 cc	24,070 psi / 1,660 BARG			$3,154.91 ex tax	Assembled to order
2PGD250	260:1	1.03 cu in / 16.93 cc	31,291 psi / 2,158 BARG			$5,237.23 ex tax	Assembled to order
2PGD30	32:1	11.50 cu in / 188.50 cc	3,851 psi / 265 BARG			$2,991.73 ex tax	Assembled to order
2PGD350	355:1	0.76 cu in / 12.44 cc	42,731 psi / 2,947 BARG			$3,209.31 ex tax	Assembled to order
2PGD36	40:1	8.80 cu in / 144.32 cc	4,814 psi / 332 BARG			$2,991.73 ex tax	Assembled to order
2PGD50	56:1	6.47 cu in / 106.03 cc	6,739 psi / 464 BARG			$3,073.32 ex tax	Assembled to order
2PGD75	80:1	4.49 cu in / 73.63 cc	9,628 psi / 664 BARG			$3,100.52 ex tax	Assembled to order
PEX4	4:1	47.55 cu in / 779 cc	466 psi / 33.2 BARG			$2,338.99 ex tax	Normally stocked
PEX4D	4:1	47.55 cu in / 779 cc	466 psi / 33.2 BARG			$2,338.99 ex tax	Normally stocked
PEX7	7:1	28.9 cu in / 473 cc	812 psi / 56 BARG			$2,529.37 ex tax	Normally stocked
PEX7D	7:1	28.9 cu in / 473 cc	812 psi / 56 BARG			$2,529.37 ex tax	Normally stocked
PG1.5	2:1	28.75 cu in / 471.24 cc	290 psi / 20 BARG			$1,523.06 ex tax	Normally stocked
PG100	100:1	0.98 cu in / 16.08 cc	12,035 psi / 830 BARG	1.7 L/min @ 1,500 psi	0.4 L/min @ 7,500 psi	$1,441.47 ex tax	Normally stocked
PG120	130:1	0.75 cu in / 12.32 cc	15,645 psi / 1,079 BARG	1 L/min @ 4,500 psi	0.35 L/min @ 9,000 psi	$1,441.47 ex tax	Assembled to order
PG15	16:1	6.13 cu in / 100.53 cc	1,925 psi / 132 BARG	9.5 L/min @ 600 psi	3.5 L/min @ 1,200 psi	$1,523.06 ex tax	Normally stocked
PG160	170:1	0.41 cu in / 6.79 cc	20,459 psi / 1,411 BARG	0.78 L/min @ 6,000 psi	0.02 L/min @ 15,000 psi	$1,455.66 ex tax	Normally stocked
PG18	20:1	4.70 cu in / 76.97 cc	2,407 psi / 166 BARG			$1,387.07 ex tax	Assembled to order
PG220	240:1	0.29 cu in / 4.71 cc	28,884 psi / 1,992 BARG	0.68 L/min @ 6,000 psi	0.59 L/min @ 13,000 psi	$1,455.66 ex tax	Assembled to order
PG25	28:1	3.45 cu in / 56.55 cc	3,369 psi / 232 BARG	6.24 L/min @ 725 psi	1.5 L/min @ 2,175 psi	$1,400.67 ex tax	Normally stocked
PG280	300:1	0.23 cu in / 3.82 cc	36,105 psi / 2,490 BARG			$1,468.67 ex tax	Assembled to order
PG3	4:1	24.53 cu in / 402.12 cc	481 psi / 33 BARG			$1,523.06 ex tax	Normally stocked
PG36	40:1	2.40 cu in / 39.27 cc	4,814 psi / 332 BARG	4.6 L/min @ 725 psi	2.2 L/min @ 2,320 psi	$1,408.36 ex tax	Normally stocked
PG400	400:1	0.18 cu in / 3.02 cc	48,140 psi / 3,320 BARG	0.43 L/min @ 7,250 psi	0.14 L/min @ 30,000 psi	$1,474.58 ex tax	Normally stocked
PG5	7:1	15.21 cu in / 249.38 cc	710 psi / 49 BARG	29 L/min @ 215 psi	10 L/min @ 400 psi	$1,523.06 ex tax	Normally stocked
PG60	64:1	1.53 cu in / 25.13 cc	7,221 psi / 498 BARG	2.75 L/min @ 1,450 psi	1.1 L/min @ 4,350 psi	$1,414.27 ex tax	Normally stocked
PG75	80:1	1.24 cu in / 20.36 cc	9,628 psi / 664 BARG	1.25 L/min @ 3,000 psi	0.1 L/min @ 6,000 psi	$1,420.18 ex tax	Assembled to order
PG9	10:1	9.58 cu in / 157.08 cc	1,203 psi / 83 BARG			$1,577.46 ex tax	Normally stocked
PGD100	100:1	1.84 cu in / 30.16 cc	12,035 psi / 830 BARG	2.72 L/min @ 1,500 psi	0.64 L/min @ 7,500 psi	$1,659.05 ex tax	Normally stocked
PGD120	130:1	1.41 cu in / 23.09 cc	15,645 psi / 1,079 BARG	1.6 L/min @ 4,500 psi	0.6 L/min @ 9,000 psi	$1,672.65 ex tax	Normally stocked
PGD15	16:1	11.5 cu in / 188.5 cc	1,925 psi / 132 BARG	15.2 L/min @ 600 psi	5.6 L/min @ 1,200 psi	$1,872.20 ex tax	Assembled to order
PGD160	170:1	0.76 cu in / 12.44 cc	20,459 psi / 1,411 BARG	1.24 L/min @ 6,000 psi	0.03 L/min @ 15,000 psi	$1,672.65 ex tax	Normally stocked
PGD18	20:1	8.80 cu in / 144.32 cc	2,407 psi / 166 BARG			$1,673.24 ex tax	Assembled to order
PGD220	240:1	0.53 cu in / 8.64 cc	28,884 psi / 1,992 BARG	1.08 L/min @ 6,000 psi	0.94 L/min @ 13,000 psi	$1,727.04 ex tax	Assembled to order
PGD25	28:1	6.47 cu in / 106.03 cc	3,369 psi / 232 BARG	9.9 L/min @ 725 psi	2.4 L/min @ 2,175 psi	$1,604.65 ex tax	Normally stocked
PGD280	300:1	0.43 cu in / 7 cc	36,105 psi / 2,490 BARG			$1,734.73 ex tax	Assembled to order
PGD36	40:1	4.49 cu in / 73.63 cc	4,814 psi / 332 BARG	7.37 L/min @ 725 psi	3.52 L/min @ 2,320 psi	$1,631.85 ex tax	Assembled to order
PGD400	400:1	0.34 cu in / 5.53 cc	48,140 psi / 3,320 BARG			$1,740.64 ex tax	Assembled to order
PGD60	64:1	2.87 cu in / 47.12 cc	7,221 psi / 498 BARG	3.68 L/min @ 2,900 psi	10.76 L/min @ 4,350 psi	$1,631.85 ex tax	Normally stocked
PGD75	80:1	2.33 cu in / 38.17 cc	9,628 psi / 664 BARG	3.04 L/min @ 1,500 psi	1.12 L/min @ 4,500 psi	$1,631.85 ex tax	Assembled to order
PGD9	10:1	14.37 cu in / 235.50 cc	1,203 psi / 83 BARG			$1,727.04 ex tax	Assembled to order
PH100	100:1	4.49 cu in / 73.63 cc	12,035 psi / 830 BARG			$4,949.95 ex tax	Normally stocked
PH10T	10:1	45.99 cu in / 753.98 cc	1,203 psi / 83 BARG			$5,711.48 ex tax	Normally stocked
PH150	156:1	2.87 cu in / 47.12 cc	18,777 psi / 1,295 BARG			$5,221.92 ex tax	Normally stocked
PH180	190:1	1.71 cu in / 27.99 cc	22,866 psi / 1,577 BARG			$5,221.92 ex tax	Normally stocked
PH22	25:1	17.97 cu in / 294.52 cc	3,001 psi / 207 BARG			$4,514.79 ex tax	Normally stocked
PH220	240:1	1.35 cu in / 22.12 cc	30,682 psi / 2,116 BARG			$5,221.92 ex tax	Normally stocked
PH35	40:1	14.5 cu in / 188.5 cc	4,814 psi / 332 BARG			$4,705.17 ex tax	Normally stocked
PH60	69:1	6.47 cu in / 106.03 cc	8,294 psi / 572 BARG			$4,922.75 ex tax	Normally stocked
PM100	100:1	0.09 cu in / 1.51 cc	12,035 psi / 830 BARG	0.32 L/min @ 1,450 psi	0.16 L/min @ 4,350 psi	$761.53 ex tax	Normally stocked
PM125	130:1	0.07 cu in / 1.15 cc	15,645 psi / 1,079 BARG			$788.73 ex tax	Normally stocked
PM15	16:1	0.57 cu in / 9.42 cc	1,914 psi / 132 BARG	6 L/min @ 363 psi	3.4 L/min @ 725 psi	$775.72 ex tax	Assembled to order
PM22	25:1	0.36 cu in / 6.03 cc	3,000 psi / 207 BARG	2 L/min @ 725 psi	0.3 L/min @ 1,813 psi	$734.33 ex tax	Normally stocked
PM40	45:1	0.20 cu in / 3.39 cc	5,409 psi / 373 BARG	0.85 L/min @ 1,088 psi	0.4 L/min @ 2,175 psi	$748.52 ex tax	Normally stocked
PM6	7:1	1.29 cu in / 21.21 cc	842 psi / 58 BARG			$761.53 ex tax	Normally stocked
PM60	64:1	0.14 cu in / 2.36 cc	7,701 psi / 531 BARG	0.88 L/min @ 1,088 psi	0.14 L/min @ 3,625 psi	$755.62 ex tax	Normally stocked
PM9	10:1	0.89 cu in / 14.73 cc	1,203 psi / 83 BARG	8.8 L/min @ 363 psi	4 L/min @ 725 psi	$775.72 ex tax	Normally stocked
PS110	126:1	0.03 cu in / 0.6 cc	13,242 psi / 913 BARG			$924.72 ex tax	Normally stocked
PS12	14:1	0.36 cu in / 5.9 cc	1,450 psi / 100 BARG			$1,223.89 ex tax	Normally stocked
PS188	217:1	0.02 cu in / 0.4 cc	22,626 psi / 1,560 BARG			$951.91 ex tax	Normally stocked
PS21	25:1	0.20 cu in / 3.3 cc	2,524 psi / 174 BARG			$897.52 ex tax	Normally stocked
PS220	237:1	0.02 cu in / 0.34 cc	25,000 psi / 1,723 BARG			$1,169.49 ex tax	Normally stocked
PS36	41:1	0.12 cu in / 2 cc	4,337 psi / 299 BARG			$911.12 ex tax	Normally stocked
PS5	5.6:1	0.82 cu in / 13.6 cc	594 psi / 41 BARG			$1,169.49 ex tax	Normally stocked
PS7	7.8:1	0.59 cu in / 9.8 cc	900 psi / 62 BARG			$1,169.49 ex tax	Normally stocked
PS71	82:1	0.06 cu in / 1.0 cc	8,543 psi / 589 BARG			$919.28 ex tax	Normally stocked
PSH110	126:1	0.03 cu in / 0.6 cc	13,242 psi / 913 BARG			$1,155.89 ex tax	Normally stocked
PSH12	14:1	0.36 cu in / 5.9 cc	1,450 psi / 100 BARG			$1,455.07 ex tax	Normally stocked
PSH188	217:1	0.02 cu in / 0.4 cc	22,626 psi / 1,560 BARG			$1,183.09 ex tax	Normally stocked
PSH21	25:1	0.20 cu in / 3.3 cc	2,524 psi / 174 BARG			$1,128.70 ex tax	Normally stocked
PSH220	237:1	0.02 cu in / 0.34 cc	25,000 psi / 1,723 BARG			$1,400.67 ex tax	Normally stocked
PSH36	41:1	0.12 cu in / 2 cc	4,337 psi / 299 BARG			$1,142.30 ex tax	Normally stocked
PSH5	5.6:1	0.82 cu in / 13.6 cc	594 psi / 41 BARG			$1,400.67 ex tax	Normally stocked
PSH7	7.8:1	0.59 cu in / 9.8 cc	841 psi / 58 BARG			$1,400.67 ex tax	Normally stocked
PSH71	82:1	0.06 cu in / 1.0 cc	8,543 psi / 589 BARG			$1,150.45 ex tax	Normally stocked
PT100	100:1	8.22 cu in / 137.44 cc	12,035 psi / 830 BARG			$5,983.45 ex tax	Normally stocked
PT150	156:1	5.37 cu in / 87.96 cc	18,777 psi / 1,295 BARG			$6,201.03 ex tax	Normally stocked
PT180	190:1	4.35 cu in / 71.25 cc	22,866 psi / 1,577 BARG			$6,201.03 ex tax	Normally stocked
PT22	25:1	33.54 cu in / 549.78 cc	3,001 psi / 207 BARG			$5,493.90 ex tax	Normally stocked
PT220	240:1	3.43 cu in / 56.30 cc	30,682 psi / 2,116 BARG			$6,201.03 ex tax	Normally stocked
PT35	40:1	21.46 cu in / 351.86 cc	4,814 psi / 332 BARG			$5,657.08 ex tax	Normally stocked
PT60	69:1	12.07 cu in / 197.92 cc	8,294 psi / 572 BARG			$5,956.25 ex tax	Normally stocked
PX1.5	2:1	11.41 cu in / 187.03 cc	300 psi / 20 BARG			$938.31 ex tax	Assembled to order
PX100	100:1	0.29 cu in / 4.71 cc	12,035 psi / 830 BARG	0.61 L/min @ 1,088 psi	0.18 L/min @ 4,350 psi	$897.52 ex tax	Assembled to order
PX120	130:1	0.23 cu in / 3.82 cc	15,645 psi / 1,079 BARG	0.52 L/min @ 1,450 psi	0.14 L/min @ 5,075 psi	$897.52 ex tax	Assembled to order
PX15	16:1	1.80 cu in / 29.45 cc	1,925 psi / 132 BARG	5.08 L/min @ 363 psi	2.44 L/min @ 725 psi	$875.76 ex tax	Assembled to order
PX150	156:1	0.18 cu in / 3.02 cc	18,763 psi / 1,294 BARG			$924.72 ex tax	Assembled to order
PX22	25:1	1.12 cu in / 18.85 cc	3,008 psi / 207 BARG			$875.76 ex tax	Assembled to order
PX3	4:1	7.19 cu in / 117.81 cc	481 psi / 33 BARG			$951.91 ex tax	Assembled to order
PX36	39:1	0.74 cu in / 12.06 cc	4,684 psi / 323 BARG			$883.92 ex tax	Assembled to order
PX5	6:1	4.6 cu in / 75.4 cc	719 psi / 49 BARG			$951.91 ex tax	Assembled to order
PX60	64:1	0.41 cu in / 6.79 cc	7,702 psi / 531 BARG	0.57 L/min @ 1,450 psi	0.06 L/min @ 4,350 psi	$883.92 ex tax	Assembled to order
PX9	10:1	2.59 cu in / 42.41 cc	1,203 psi / 83 BARG	6.08 L/min @ 363 psi	2.34 L/min @ 725 psi	$870.32 ex tax	Assembled to order
PXD100	100:1	0.53 cu in / 8.64 cc	12,035 psi / 830 BARG	0.801 L/min @ 1,088 psi	0.29 L/min @ 4,350 psi	$1,115.10 ex tax	Assembled to order
PXD120	130:1	0.43 cu in / 7 cc	15,645 psi / 1,079 BARG			$1,115.10 ex tax	Assembled to order
PXD15	16:1	3.29 cu in / 54 cc	1,925 psi / 132 BARG	9.03 L/min @ 363 psi	4.24 L/min @ 725 psi	$1,047.70 ex tax	Assembled to order
PXD150	156:1	0.34 cu in / 5.53 cc	18,763 psi / 1,294 BARG			$1,169.49 ex tax	Assembled to order
PXD22	25:1	2.11 cu in / 34.56 cc	3,008 psi / 207 BARG			$1,074.30 ex tax	Assembled to order
PXD36	39:1	1.35 cu in / 22.12 cc	4,693 psi / 323 BARG	0.84 L/min @ 1,450 psi	0.29 L/min @ 3,625 psi	$1,087.90 ex tax	Assembled to order
PXD60	64:1	0.76 cu in / 12.44 cc	7,702 psi / 531 BARG	0.63 L/min @ 1,450 psi	0.06 L/min @ 4,350 psi	$1,087.90 ex tax	Assembled to order
PXD9	10:1	3.45 cu in / 56.55 cc	1,203 psi / 83 BARG	9.19 L/min @ 363 psi	4.93 L/min @ 725 psi	$1,033.51 ex tax	Assembled to order

^* Availability options include: Assembled to order = product is made to order (2-3 week leadtime), Stocked item = product is available.