4
3 R 71 EN - Issue 9/2020
1.4 Technical specifications
Face-to-face length:
R1L: special
length
R21:
according to ISA S75.04 and
IEC/DIN 534-3-2
R2_S: special
length
Body rating:
see Section 12
Max. pressure differential:
see Fig. 4 and 5
Temperature range:
see Fig. 3
Flow direction:
indicated by an arrow on
the body
Dimensions:
see Section 11
Weights:
see Section 11
1.5 Valve approvals
The valve meets the Fire-safe requirements of BS6755/API 607
Edition 3.
1.6 CE marking
The valve meets the requirements of the European Directive 2014/
68/EU relating to pressure equipment, and has been marked
according to the Directive.
1.7 Recycling and disposal
Most valve parts can be recycled if sorted according to material. Most
parts have material marking. A material list is supplied with the valve.
In addition, separate recycling and disposal instructions are available
from the manufacturer. A valve can also be returned to the
manufacturer for recycling and disposal against a fee.
Fig. 3
Maximum pressure differentials of R series valves
Fig. 4
Maximum pressure differentials of acid-resistant and car-
bon-steel standard valves in control and on-off operation
Fig. 5
Maximum pressure differentials of standard titanium
valves in control and on-off operation
