Crest Process Engineering Ltd. - supplies pumps, pump systems and associated equipment.

Crest Process Engineering.
Pumps for Industry

ARO Pumps
Air Operated Diaphragm Pumps

Crest Process Engineering are a Main Stocking Distributor for ARO in the U.K. and hold stock of both pumps and spare parts at their own factory in Radstock.

Features & Benefits

"Unstallable™" Air Valve
Quick Dumps™ Prevent Freezing
Forgiving Air Valve Seals
Bolted Construction
5 Years between failure
Pumping 1.6 million gallons without fail

ARO Pumping Principle

ARO Valve Animation

RED
Compressed air driving
diaphragms

BLUE
Air venting from diaphragm
chambers to atmosphere

ARO EXPERT SERIES DIAPHRAGM PUMPS

The EXP series of diaphragm pumps are designed especially for the Process Industries. These pumps offer optimum compatibility, efficiency and a host of patented stall-free and ice-free features that render the rest obsolete.

Performance Specifications: 1 inch Non-Metallic
Ratio	1:1
Maximum Flow	200.6 litres per minute
Displacement Litres per Cycle	0.44 litres
Air Inlet	1/4" - 18 NPTF
Fluid Inlet	ANSI / DIN Flange (Side or Centre) 1 - 11 - 1/2" NPTF - 1, RP 1 - 11 BS Threads
Fluid Outlet	ANSI / DIN Flange (Side or Centre) 1 - 11 - 1/2" NPTF - 1, RP 1 - 11 BS Threads
Maximum Operating Pressure	8.3 bar
Suspended Solids Max Diameter	3.2 mm
Maximum Dry Suction Lift	6 m (Elastomer Fitted)
Weight	8.78 kg - 12.32 kg dependent on specification

Performance Specifications: 1.5 inch Non-Metallic
Ratio	1:1
Maximum Flow	465.6 litres per minute
Displacement Litres per Cycle	2.23 litres
Air Inlet	3/4" NPTF
Fluid Inlet	ANSI / DIN Flange (Side or Centre)
Fluid Outlet	ANSI / DIN Flange (Side or Centre)
Maximum Operating Pressure	8.3 bar
Suspended Solids Max Diameter	6.4 mm
Maximum Dry Suction Lift	4.7 m (Rubber Fitted)
Weight	19.3 kg Polypropylene 29.0 Kynar^®

Performance Specifications: 2.0 inch Non-Metallic
Ratio	1:1
Maximum Flow	696 litres per minute
Displacement Litres per Cycle	5.3 litres
Air Inlet	3/4" NPTF
Fluid Inlet	2.0" ANSI / DIN Flange
Fluid Outlet	2.0" ANSI / DIN Flange
Maximum Operating Pressure	8.3 bar
Suspended Solids Max Diameter	6.4 mm
Maximum Dry Suction Lift	6 m (Elastomer Fitted
Weight	39 kg Polypropylene 50 Kynar^®

Performance Specifications: 1 1/2 inch Stainless Steel
Ratio	1:1
Maximum Flow	465.6 litres per minute
Displacement Litres per Cycle	2.65 litres
Air Inlet	1/2" NPTF
Fluid Inlet	1 1/2" ANSI / DIN Flange ( 1.0" NPTF / 1 1/2" BS Threads
Fluid Outlet	1 1/2" ANSI / DIN Flange ( 1.0" NPTF / 1 1/2" BS Threads
Maximum Operating Pressure	8.3 bar
Suspended Solids Max Diameter	6.4 mm
Maximum Dry Suction Lift	4.7 m (Rubber Fitted
Weight	28.5 kg

ARO CLASSIC RANGE

ARO Diaphragm Pump Models	Maximum Flow GPM (LPM)	Maximum Discharge Pressure PSI (BAR)	Fluid Ports Inlet/outlet (BSP Available)	Materials of Construction	Best Selling Models
1/4" Ports Non-Metallic	4.5 (17.4)	100 (6.8)	3/8" (F) -In 1/4" -Out (no BSP)	Polypropylene Groundable Acetal Kynar®	PD02P-APS-PTA PD02P-APS-PTT PD02P-ADS-DTT PD02P-AKS-KTT

Non Metalic	13(49)	100 (6.8)	1/2" (F) In/Out (no BSP)	Polypropylene Groundable Acetal Kynar®	66605J-388 66605J-3EB 66605J-344 66605H-244 66605K-444 66605H-2A4

1/2" Ports Metallic	13(49)	100 (6.8)	1/2" (F) In/Out (no BSP)	Stainless Steel Aluminum	PD05P-ASS-SAA PD05P-ASS-STT PD05P-AAS-STT PD05P-AAS-PGG

1" Ports Non-Metallic	47(178)	120 (8.3)	1" ANSI Flange	Polypropylene Kynar (PVDF)	6661A3-3EB-C 6661A3-344-C 6661B3-344-C 6661A4-444-C

1" Ports Metallic	35 (133)	120 (8.3)	1" (F) - In/Out (BSP Available)	Aluminum Stainless Steel Cast Iron	666100-322-C 666100-344-C 666101-344-C 666101-3EB-C 666111-244-C 666112-8EB-C

1" Ports Metallic 3:1 Ratio	24 (90.7)	300 (20.7)	1" (F) - In/Out (BSP Available)	Stainless Steel	PH10A-ASS-SST

1 1/2" Ports Non-Metallic	100 (379)	120 (8.3)	1 1/2" Flange ANSI (BSP Available)	Polypropylene Kynar®	6661T3-3EB-C 6661T3-344-C 6661U3-344-C 6661U4-444-C

1 1/2" Ports Metallic	100 (379)	120 (8.3)	1 1/2" (F) (BSP Available)	Aluminum Stainless Steel Cast Iron	666150-322-C 666150-344-C 666152-3EB-C 666151-344-C 666151-3EB-C 666161-244-C

2" Ports Non-Metallic	145 (548)	120 (8.3)	2" ANSI Flange (BSP Available)	Polypropylene Kynar	6662A3-3EB-C 6662A3-344-C 6662B3-344-C 6662B4-444-C

2" Ports Ball Valve	170 (644)	120 (8.3)	2" (F) (BSP Available)	Aluminum Stainless Steel Cast Iron	PD20A-AAP-GGG PD20A-AAP-KTT PD20A-ACP-AAA PD20A-ASP-AAA PD20A-ASP-KTT PD20C-ASS-KTT

2" Ports "Flap" Valve	170 (644)	120 (8.3)	2" (F) (BSP Available)	Aluminum Stainless Steel Cast Iron >	PF20A-AAP-SAA PF20A-ACP-SAA PF20A-ASS-SAA PF20C-ASS-SAA PF20A-AAP-SUA PF20C-ASS-SVT

3" Ports Metallic	275 (1041)	120 (8.3)	3" (F) (BSP Available)	Aluminum Stainless Steel Cast Iron Hastelloy	PD30A-AAP-GGG-B PD30A-AAP-KTT-B PD30A-ACS-AAA-B PD30A-ASS-AAA-B PD30A-ASP-KTT-B PD30S-ASS-STT-B

ARO Pumps

Air Operated Diaphragm Pumps