Hydac Mobile Directional Control Valves

Monoblock Valve

RM 230 Series

Key valve features

• RM 230 is a mono block valve, designed for system pressures up to 300 bar and pump flows up to 70 l/min.
• It is available with 1 to 4 sections per valve.
• It is designed with an open centre for fixed displacement pumps.
• The valve can be operated manually, with cable or by pneumatic and electro-pneumatic remote control.
• The valve offers excellent operating characteristics because of the specially designed spools for different applications.
• Low and uniform spool forces are the result of careful balancing of the flow forces.

Applications
Typical applications for RM 230 are tippers, cranes, refuse trucks and agricultural vehicles.

Further RM 230 properties and possibilities

• There are many varieties of spools and spool con- trols which make the valve suitable for a wide range of applications.
• Two or more blocks can be connected in series.

Technical data
Pressures / Flow
Max. system pressure* …………………………..300 bar (30,0 MPa)
Max continuous return line pressure…………….20 bar (2,0 MPa)
Rated flow……………………………………………………………. 50 l/min
*depending on application

Further data

• Spring force for spool control 9 in neutral position:  110 N (11,0 kp).
• Spring force for spool control 9 with a fully selected spool:  136 N (13,6 kp).
• Recommended contamination level at normal duty:  equal to or better than 18/14 as per ISO 4406.
• Hydraulic fluid viscosity range at continuous operation:  10-400 mm²/s (cSt). Higher viscosity allowed at start up.
• Mineral oil and synthetic oil based on mineral oil are recommended.
• Max. hydraulic fluid temperature range for continuous operation:  -15°C to +80°C.
• Spool leakage at 100 bar, 32 cSt and 40°C:  <13 cm³/min.

Available in: Alabama, Arkansas, Arizona, N.W. Florida, S. Idaho, Louisiana, Mississippi, Montana, New Mexico, Nevada, Oklahoma, Texas and Utah

Sectional Valves

RS 210 Series

Key valve features

• RS 210 is a sectional valve, designed for system pressures up to 350 bar and pump flows up to 70 l/min.
• It is available with 1 to 10 working sections per valve assembly.
• The valve can be used in different systems for parallel as well as tandem circuits. It is designed with an open ceter for fixed and variable displacement pumps.
• The valve can be operated manually, with cable or by pneumatic and electro-pneumatic remote control.
• The valve offers excellent operating characteristics because of the specially designed spools for different applications.
• Low and uniform spool forces are the result of careful balancing of the flow forces.

Q-function
The flow control (Q-function) of the inlet section by-passes the major part of the pump flow to tank when the system is idling, thereby greatly reducing heat generation. But it also gives access to the full pump flow when the services are operated and provide improved operating characteristics.

Applications
The RS 210 is ideal for applications where you need excellent control characteristics such as cranes, excavators, back-hoe-loaders, skid loaders and tipping gear.

Further RS 210 Properties and Possibilities

• Several different in- and outlet alternatives offering possibility for electrical unloading, connecting and dimensional flexibility.
• Very wide programme of different spools optimised for various pump flows, applications, system alternatives etc.
• Spool controls for external kick-out and spool position sensing.
• Load checks in each working section.
• High pressure carry-over.
• Left-hand and right-hand side inlet.

Technical data
Pressures / Flow
Max. system pressure* ………………………….. 350 bar (35,0 MPa)
Max continuous return line pressure …………… 20 bar (2,0 MPa)
Rated pump flow……………………………………………………. 50 l/min
With Q-inlet ………………………………………………………….. 70 l/min
*depending on configuration and application

Further Data

• Spring force for spool control 910 in neutral position:  110 N (11,0 kp).
• Spring force for spool control 901 with fully selected spool:  135 N (13,5 kp).
• Recommended contamination level at normal duty:  equal to or better than 18/14 as per ISO 4406.
• Hydraulic fluid viscosity range at continuous operation:  10-400 mm²/s (cSt). Higher viscosity allowed at start up.
• Mineral oil and synthetic oil based on mineral oil are recommended.
• Max. hydraulic fluid temperature range for continuous operation:  -15°C to +80°C.
• Spool leakage at 100 bar, 32 cSt and 40°C:  <13 cm³/min.

Available in: Alabama, Arkansas, Arizona, N.W. Florida, S. Idaho, Louisiana, Mississippi, Montana, New Mexico, Nevada, Oklahoma, Texas and Utah

RS 220 Series

Key valve features

• RS 220 is a sectional valve designed for system pressures up to 350 bar and pump flows up to 90 l/min.
• It is available with 1 to 10 working sections per valve assembly.
• RS 220 is designed with an open center for fixed and variable displacement pumps.
• It is available with electro-hydraulic or hydraulic proportional remote control, but the valve can also be manually operated.
• The electro-hydraulic proportional version in particular offers compact design with internal pilot oil supply, solenoids integrated in the valve body and integral hand levers for manual override/manual operation.
• RS 220 can be fully adapted for marine applications.
• The valve offers excellent operating characteristics because of the specially designed spools for different applications.
• Low and uniform spool forces are the result of careful balancing of the flow forces.

Q-function
The flow control (Q-function) of the inlet section by-passes the major part of the pump flow to tank when the system is idling, thereby greatly reducing heat generation. But it also gives access to the full pump flow when the services are operated and provide improved operating characteristics.

Applications
The RS 220 is ideal for applications where you need excellent control characteristics such as cranes, sky- lifts, excavators, telescopic load handlers, skid-loaders, wheel loaders etc.

Remote Control
The RS 220 is designed with an integrated pilot supply system in order to achieve an easy installation and a reliable remote control function. It is also possible (and in some cases to prefer) to supply the pilot system externally.

Further RS 220 Properties and Possibilities

• A wide choice of spools and spool controls for different flow combinations and for several applications and systems.
• A full range of service port valves.
• Possibility of high pressure carry-over.
• Electrical unloading.
• Manual versions easily convertible to remote control.

Technical data
Pressures / Flow
Max. system pressure: …………………………… 350 bar (35,0 MPa)
Max continuous return line pressure………………20 bar (2,0 MPa)
Max. return line pressure, pilot oil circuit ………….5 bar (0,5 PMa)
Rated flow……………………………………………………………….80 l/min
*Depending on application

Further data

• Spring force for spool control 901 in neutral position:  110 N (11,0 kp).
• Spring force for spool control 901 with fully selected spool:  130 N (13,0 kp).
• Recommended contamination level at normal duty:  equal to or better than 18/14 as per ISO 4406.
• At higher system pressure and/or for remote control:  equal to or better than 17/13 as per ISO 4406.
• Hydraulic fluid viscosity range at continuous operation:  10-400 mm²/s (cSt). Higher viscosity allowed at start up.
• Mineral oil and synthetic oil based on mineral oil are recommended.
• Max. hydraulic fluid temperature range for continuous operation:  -15°C to +80°C.
• Spool leakage at 100 bar, 32 cSt and 40°C:  <13 cm³/min.

Attention:  To ensure proper function of remote control systems it is very important that the acceptable level of contamination is not exceeded.

Available in: Alabama, Arkansas, Arizona, N.W. Florida, S. Idaho, Louisiana, Mississippi, Montana, New Mexico, Nevada, Oklahoma, Texas and Utah