Richter GU/F Series Overflow Valves Uživatelský manuál stáhnout pdf (Strana 4)

Series GU/F Page 4

9530-070-en Revision 00

TM 6908 Edition 10/2007

Body identification:

The shell bears the following information in

accordance with DIN EN 19 and AD 2000, A4:

 nominal diameter

 nominal pressure



shell material

 manufacturer's identification

 charge number/foundry identification

 Cast date

 arrow for direction of flow

1.2 Component identification

Certified overflow valve GU DN 25 are identified with

a certification plate to the German data sheet A2 (on

pressure vessels). This stainless steel plate is riveted

to the valve body.

It contains the following details for example:

TÜV = TÜV symbol

SV = Safety valve

07 = Year of certification (here: 2007)

871 = Certification number (here: 993)

= Narrowest flow Ø in mm (here: 22)

D/G = intended for discharging vapours/gases

F = intended for discharging liquids

w = Certified coefficient of discharge

(here: 0.40)

p = Test pressure in bar (here: 6.0)

1.3 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.

diameter

Screws Torque

[mm] [ISO/DIN] [Nm] [in-lbs]

25 4 x M12 10 90

50 4 x M16 20 175

40 4 x M16 26 230

65 4 x M16 40 355

80 8 x M16 25 220

Pipe screws, flanges to ASME Class 150 or flanges

to ISO/DIN, drilled to ASME Class 150

Flange nom.

diameter

Screws Torque

[mm] [inch] [ASME] [Nm] [in-lbs]

25 1" 4 x ½“ 8 70

40 1½" 4 x R“ 15 135

50 2" 4 x R“ 25 220

65 --- 4 x R“ 30 265

80 3" 8 x R“ 45 400

Pipe screws, flanges to ASME Class 300

Flange nom.

diameter

Screws Torque

[mm] [inch] [ASME] [Nm] [in-lbs]

25 1 4 x R“ 15 133

40 1½ 4 x ¾“ 25 221

50 2 8 x R“ 15 133

Cover crews DIN/ISO

Flange nom.

diameter

Screws Torque

[mm] [inch] [ISO/DIN] [Nm] [inch-lbs]

25 1“ 4 x M10 50 442

40 1½“ 4 x M12 50 442

65 --- 4 x M12 50 442

50 2“ 4 x M12 50 442

80 3“ 8 x M12 50 442

Cover screws ASME

Flange nom.

diameter

Screws Torque

[mm] [inch] [ASME] [Nm] [inch-lbs]

25 1“ 4 x ½“ 50 442

40 1½“ 4 x ½“ 50 442

50 2“ 4 x ½“ 50 442

80 3“ 8 x ½“ 50 442

Hex. socket screws 914/1 of the bellows seal

Nom. size Screws Torque

[Nm] [in-lbs]

4 x M8 10 89

4 x M8 12 106

1 2 3 4 5 6 7 8 9 ... 21 22

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