beautypg.com

1 name plate, ce and body markings, 2 tightening torques, 1 name plate, ce and body markings 1.2 tightening – Richter GR/F Series Check Valves User Manual

Page 3: Torques, Series gr/f

background image

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