Richter GR/F Series Check Valves - Manual (Page 3)

Series GR/F
Page 3
9550-075-en Revision 01
TM 6897 Edition 10/2007
Temperature range :
See pressure-temperature diagram in Section 1.4.
Operating pressure: from vacuum to max. 16 bar
See pressure-temperature diagram in Section 1.4.
Sizes :
DN 15, 20, 25, 40, 50, 65, 80, 100
ASME ½“, ¾“, 1“, 1½“, 2“, 3“, 4“
Weight:
Nom.
size
15 20 25 40 50 65 80 100
ASME ½“ ¾“ 1“ 1½“ 2“ --- 3“ 4“
ca. kg
6 6 11 17 19 20 39 44
Installation position:
Installation position horizontal. Make sure that the
cover is on top.
A direction arrow on the shell indicates the direction of
flow. See Section 6.2.
Dimensions and individual parts:
See sectional drawing in Section 10
Wear parts: Plug, seat
1.1 Name plate, CE and body
markings
The stainless steel name plate is firmly riveted to the
body.
If the operator attaches his identification, it must be
ensured that the valve matches the application in
question.
Example of name plate with CE marking
No CE marking is permissible for the sizes 15, 20 and
25; the name plate therefore has no CE marking.
Body identification:
The following are visible on the body according to DIN
EN 19 and AD 2000 A4:
Nominal size
Rated pressure
Body material
Manufacturer's identification
Melt number/Foundry identification
Cast date
Arrow for direction of flow
1.2 Tightening torques
All screws greased, tighten in diametrically
opposite sequence!
The tightening torques for pipe screws and body
screws mentioned must not be exceeded. For an
exception, see Section 8, Flange connection valve /
pipe is leaking.
The following tightening torques are recommended.
Pipe screws, flanges to ISO/DIN
Flange nom.
size
Screws Tightening torque
[mm] [inch] [ISO/DIN] [Nm] [in-lbs]
15 ½“ 4 x M12 6 55
20 ¾“ 4 x M12 8 70
25 1 4 x M12 10 90
40 1½ 4 x M16 20 175
50 2 4 x M16 26 230
65 -- 4 x M16 40 355
80 3 8 x M16 25 220
100 4 8 x M16 35 310
Pipe screws, flanges to ASME Class 150 or flanges
ISO/DIN drilled to ASME Class 150
Flange
nom. size
Screws Tightening torque
[mm] [inch] [ISO/DIN] [mm] [inch]
15 ½“ 4 x ½“ 5 45
20 ¾“ 4 x ½“ 6 55
25 1“ 4 x ½“ 8 70
40 1½“ 4 x H“ 15 135
50 2“ 4 x H“ 25 220
65 --- 4 x H“ 30 265
80 3“ 4 x H“ 45 400
100 4“ 8 x H“ 35 310