General Pump RA2 Quick Start Manual Download Page 5

GENERAL PUMP 

1174 Northland Drive • Mendota Heights, MN 55120

Phone: 651.686.2199  • Fax: 800.535.1745 • e-mail: [email protected] • www.generalpump.com

Ref 300929 Rev. B

05-20

GENERAL PUMP  

A member of the Interpump Group

RA2

Industrial Unloader

INSTRUCTIONS FOR USE (CONT.)

The valve should be mounted on the pressure line in 

any position (horizontal or vertical) which will allow easy 

access to the pressure adjusting screw. For proper oper-

ation the by-pass line internal diameter should be at least 

1.25” at the narrowest point, and should not be connected 

directly to the pump inlet line (see below for correct instal-

lation).

Summary of Contents for RA2

Page 1: ... through the by pass Protects the system from over pressurization Traps pressure after the valve while reducing pressure at the pump SPECIFICATIONS FEATURES DIMENSIONS Ref 300929 Rev B 03 19 Part Number RA2 Max Pressure 3 050 PSI Max Flow 61 0 PSI Max Temperature 185 F Port Size Inlet 1 BSP F Outlet 3 4 BSP F Bypass 1 1 4 BSP F Weight 10 6 lbs General Pump is a member of the Interpump Group ...

Page 2: ...Ring 22 x 30 x 1 5 LP 1 16 F36339366 Piston Control 1 17 F36339482 Spacer 1 No Part No Description Qty 18 F90261000 Ring Spacer Ø 15 x 23 x 6 LP 1 19 F36339970 Guide Ring 1 20 90386500 O ring 29 82 x 2 62 1 21 F90517750 Anti extrusion Ring 30 9 x 35 x 1 5 1 22 F36340070 Bushing 1 23 701014 O ring 12 42 x 1 78 1 24 F36339566 Ring 1 25 90385200 O ring 22 22 x 2 62 1 26 F90514450 Anti extrusion Ring ...

Page 3: ...of water equal to 5 of the total flow rate In case the flow rate at the by pass is close to zero or exceeds 15 of the maximum flow rate this could cause failure early wear and result in situations of danger The positions mentioned in the following instructions refer to those shown in the parts list on page 2 3 2 Connect the valve to the water system and follow these steps 3 2 1 Loosen the nut pos ...

Page 4: ...e by pass without hose 4 11 Before operating the system it is advisable to start it for a preliminary test run in order to check that the system is properly installed 4 12 In order to optimize the pump valve coupling it is nec essary to keep the valve operation as a function of the pump pressure and flow rate within a maximum power of 81 5 HP As shown in the chart this means using pumps producing ...

Page 5: ...p Group RA2 Industrial Unloader INSTRUCTIONS FOR USE CONT The valve should be mounted on the pressure line in any position horizontal or vertical which will allow easy access to the pressure adjusting screw For proper oper ation the by pass line internal diameter should be at least 1 25 at the narrowest point and should not be connected directly to the pump inlet line see below for correct instal ...

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