GEM 639 eSyStep Operating Instructions Manual page 25

8.2.8 Flange EN (code 8)
FTF
Connection type flange, length EN 558 (code 8)
casting material (code 39, C3), forged material (code 40, 42)
MG DN NPS
25 15 1/2"
20 3/4"
25 1"
Dimensions in mm
MG = diaphragm size
n = number of bolts
1) Connection type
Code 8: Flange EN 1092, PN 16, form B, face-to-face dimension FTF EN 558 series 1, ISO 5752, basic series 1, length only for body configur-
ation D
2) Valve body material
Code 8: EN-GJL-250 (GG 25)
Code 17: EN-GJS-400-18-LT (GGG 40.3), PFA lined
Code 18: EN-GJS-400-18-LT (GGG 40.3), PP lined
Code 39: 1.4408, PFA lined
Code 40: 1.4435 (F316L), forged body
Code 42: 1.4435 (BN2), forged body, Δ Fe < 0.5%
Code 83: EN-GJS-400-18-LT (GGG 40.3), hard rubber lined
Code C3: 1.4435, investment casting
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ØL
1) , cast iron material (code 8), SG iron material (code 17, 18, 83), investment
øD FTF
Material
8, 17, C3
18, 39,
40, 42,
83
95.0 130.0 150.0
105.0 150.0 150.0
115.0 160.0 160.0
2)
H1
Material
8 17, 18, C3
39, 83
19.0 18.0 13.0
19.0 20.5 16.0
19.0 23.0 19.0
25 / 67
8 Dimensions
øk øL
40, 42
19.0 65.0 14.0
19.0 75.0 14.0
19.0 85.0 14.0
GEMÜ 639 eSyStep
OPEN / CLOSE (Code AE)
n
4
4
4