BS 6494-6:1989

National foreword
Committees responsible
Specification
0. Introduction
1. Scope and field of application
2. References
3. Definitions
4. Symbols
5. Tolerances
6. Dimensions
7. Port marking
8. Modular stack valves
9. Working pressure
10. Identification statement
Figures
1. Mounting surface for pressure-control valves,
     sequence valves, unloading valves, throttle valves
     and check valves with main ports of 4 mm maximum
     port diameter (size 02)
2. Directly operated pressure-control valves, sequence
     valves, unloading valves, throttle valves,
     unloading valves, throttle valves and check valves
     with main ports of 4 mm maximum port diameter
     (code: ISO 5781-AA-02-4-B)
3. Mounting surface for pressure-control valves,
     sequence valves, unloading valves, throttle valves
     and check valves with main ports of 7,5 mm maximum
     port diameter (size 03)
4. Directly operated pressure-control valves, sequence
     valves, unloading valves, throttle valves and check
     valves with main ports of 7,5 mm maximum port
     diameter (code: ISO 5781-AB-03-4-B)
5. Pilot-operated pressure-control valves, sequence
     valves and unloading valves with main ports of
     7,5 mm maximum port diameter (code: ISO
     5781-AB-03-4-C)
6. Mounting surface for pressure-control valves,
     sequence valves, unloading valves, throttle valves
     and check valves with main ports of 14,7 mm maximum
     port diameter (size 06)
7. Directly-operated pressure-control valves, unloading
     valves, throttle valves and check valves with main
     ports of 14,7 mm maximum port diameter (code: ISO
     5781-AG-06-2-A)
8. Pilot-operated pressure-control valves, sequence
     valves and unloading valves with main ports of
     14,7 mm maximum port diameter (code: ISO
     5781-AG-06-2-A)
9. Mounting surface for pressure-control valves,
     sequence valves, unloading valves, throttle valves
     and check valves with main ports 23.4 mm maximum
     port diameter (size 08)
10. Directly operated pressure-control valves, unloading
     valves, throttle valves and check valves with main
     ports of 23,4 mm maximum port diameter (code: ISO
     5781-AH-08-2-A)
11. Pilot-operated pressure-control valves, sequence
     valves and unloading valves with main ports of
     23,4 mm maximum port diameter (code: ISO
     5781-AH-08-2-A)
12. Mounting surface for pressure-control valves,
     sequence valves, unloading valves, throttle valves
     and check valves with main ports of 32 mm maximum
     port diameter (size 10)
13. Directly operated pressure-control valves, unloading
     valves, throttle valves and check valves with main
     ports of 32 mm maximum port diameter (code: ISO
     5781-AJ-10-2-A)
14. Pilot-operated pressure-control valves, sequence
     valves and unloading valves with main ports of
     32 mm maximum port diameter (code: ISO
     5781-AJ-10-2-A)
Bibliography