A new technical document has recently been published and is now available from the National Fluid Power Association (NFPA).
ISO 7790:2013 (supersedes ISO 7790-1997) Hydraulic fluid power – Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10 – Clamping dimensions
Scope: This International Standard specifies clamping dimensions of four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05,07,08 and 10, on mounting surfaces. The dimensions and sizes conform to ISO 4401 so as to ensure interchangeability of these valves and to reduce the number of fixing devices to be used.
It applies to clamping dimensions of four-port modular stack valves and four-port directional control valves which represent current practice. They are generally applicable to industrial equipment.
Benefits: ISO 7790 is a dimensional interchangeability standard that benefits users by allowing them to purchase hydraulic four-port modular stack valves from multiple suppliers, and manufacturers of these valves to benefit from economies of scale afforded by the standard.
NFPA list price:
$54.00
NFPA member price:
$43.00
NFPA
www.nfpa.com
