General description 

API series chemical processing pumps, are applicable for refinery, petrochemical industry, pipeline booster, cryogenic engineering, coal chemistry etc., to transport various clean, cryogenic and high temperature combustible, explosive and corrosive media.

I. Single stage cantilever pump, 

1. OH1,foot mount cantilever single stage pump，SLCZ，Size：1~16’’ Flow range：0~2600m3/h Head：0~240m Temperature：-80~300℃， Material：S-1,S-3,S-4,S-5,S-6,S-8,A-7,A-8,D-1,D-2,single mechanical seal or cartridge mechanical seal，diaphragm coupling 

2. OH2, Centerline mount single stage cantilever single stage pump，SLZA/E/F, Size：1~16’’ Flow range：0~2600m3/h Head range：0~300m Temp.：-80~450℃， Material：S-6,S-8,A-7,A-8,D-1,D-2,Cartridge mechanical seal，diaphragm coupling 

3. OH3, single stage vertical inline cantilever pump with independent bearing support. AYG, Size：1~8’’Flow range：3~600m3/h Head range：4~120m Temp.：-20~250℃， Material：S-6,S-8,A-7,A-8,D-1,D-2,single mechanical seal，cartridge mechanical seal 

4. OH4, vertical inline single stage cantilever pump with rigid coupling. 

5.OH5, Coaxial drive single stage cantilever vertical inline pump. 

6. OH6, Single stage cantilever pump integrated with high-speed gearbox.

II. Both ends support between bearings: 

1. BB1, Axial split one and two stage between bearings. SLOW，Size：3~32’’ Flow range：60~10000m3/h Head range：0~240m Temperature：-20~200℃， Material：I-1,I-2,S-1,S-3,S-4,S-5,S-6,S-8,A-7,A-8,D-1,D-2, two mechanical seal，cartridge mechanical seal，diaphragm coupling. 

2. BB2, Radial split one and two stage between bearings. 

3. BB3, Axial split multistage between bearings. 

4. BB4, Single casing radial split multistage between bearings. Also called single casing multistage segment pump or ring type segment pump.

5.BB5，double volutes，radial split，multistage between bearings. 

III. Vertical suspended pump:

VS1/VS2/VS3/VS4/VS5/VS6/VS7