DN50-DN300
DN50-DN300

DN50-DN300 Double flange type Metal to Metal Butterfly Valve

Design: BS EN593 or API609
Flange: EN1092-1 /GOST 33259-2015 ASME B16.5/ASME B16.47
Face to Face: EN558-1-Series 13;
Materials: WCB/LCB/LCC/LC1/CF8/CF8M/SS321/SS904L
Briefs
Standards
Optional
Remarks
parameter(Dimension: mm)
Briefs
Triple eccentric design;
Bidirectional type zero leakage
Size rage from DN 50—DN 300mm
Pressure rating: PN10 – PN25 from DN50-DN 300mm PN40 for DN 200-DN 1200mm
Applications: water, hot water, oil and gas etc.
Standards
Design:
BS EN593 or API609
Flange:
EN1092-1 /GOST 33259-2015 ASME B16.5/ASME B16.47
Face to Face:
EN558-1-Series 13;
Materials:
WCB/LCB/LCC/LC1/CF8/CF8M/SS321/SS904L
Optional
Electric /pneumatic actuator/ bare shaft / gearbox +ready flange
Remarks
Design and manufacture as per BS EN593
Face to face dimensions as per BS EN558 Series 13
Flange dimensions as per Gost 33259-2015
Pressure test as per BS EN12266-1
Pressure test PN10 PN16 PN25
Shell 15bar 24bar 37.5bar
Seal Water 11 bar 17.6bar  27.5bar 
Air 6bar 6bar 6bar

Media: Water, oil and gas Temperature: -15~350℃ Dimension: mm

Material for main parts
No. Part Name Material No. Part Name Material
1 Body WCB 7 Retainer Q235
2 Bushing Selflubricating 8 Packing Graphite
3 Body seat SS304 9 Gland WCB
4 Disc seat SS304+ XB450 10 Yoke WCB
5 Stem 2Cr13 11 Gear box Ductile iron
6 Disc WCB      
parameter(Dimension: mm)
DN PN LF D DO D1 n-Ød f b H# H1 #
50 10 108 165 102 125 4-018   3 18 213 92
16
25
65 10 112 185 122 145 4-018   3 18 225 101
16
25 8-018 22
80 10 114 200 132 160 8-018   3 20 230 110
16
25 22
100 10 127 220 156 180 8-018   3 20 242 120
16
25 235 190 8-022 24 247 128
125 10 140 250 184 210 8-018   3 22 276 137
16
25 270 220 8-026 26 281 152
150 10 140 285 210 240 8-022   3 24 296 155
16
25 300 250 8-026 28 305 167
200 10 152 340 266 295 8-022   3 24 364 185
16 12-022
25 360 274 310 12-026 30 364 210
250 10 165 395 316 350 12-022   3 26 395 218
16 405 355 12-026
25 425 330 370 12-030 32 405 245
300 10 178 445 370 400 12-022   4 26 430 247
16 460 370 410 12-026 28
25 485 389 430 16-030 4-M27 * 34 438 291
The "n" of "n-Ød" is the total number of holes, 4-M27 means that the 4 holes at stem upper and lower position are threaded
holes.
"H" and "H1" for reference only.
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