CAST BELLOW SEAL GATE VALVE, BUTT WELD ENDS

DN 50 - DN 300
150#
  C.S S.S Low temp.
T min. -29°C -29°C -29°C
T max. +425°C +538°C +345°C

Available on request :

  • Special Corrosion resistant materials for :
    Complete Valve, Bellows and Trim
  • Optional Actuator/Gear Operator.
  • Optional valves with CE and API 6D markings.
  • Optional valve with High Pressure Ratings.



Component Materials
C.S S.S Low temp.
CBGT - B - CS CBGT - B - SS CBGT - B - LT
Body, Bonnet &
Cylinder
WCB CF8M / CF8 LCC / LCB / LC3
Wedge WCB + HF CF8M / CF8 + HF LCC / LCB / LC3 + HF
Seat Ring WCB + HF CF8M / CF8 + HF LCC / LCB / LC3 + HF
Bellow SS3 16Ti / SS321 SS316Ti / SS321 SS316Ti / SS321
Top/Bottom
Bellow collar
SS316 / SS321 SS316 / SS321 SS316 / SS321
Stem SS410 SS316 / 304 SS304
Gland Bush SS410 SS316 / 304 SS304
Gland Flange Carbon Steel SS316 / 304 SS304
Packings Graphite / PTFE
Yoke Sleeve SG Iron/NI Resist / 416*
Hand Wheel Cast Iron/MI*
Hand Wheel Nut Carbon Steel SS304 SS304
Gasket SPW SS304 / SS316 + Graphite / PTFE
Yoke Nut SS410 SS304 SS304
Fastners A193 Gr.B7/A 194
Gr.2H
A193 Gr.B8/A 194 Gr.8 A 320 Gr.L7/A 194 Gr.7
Eye Bolt/ Nut Carbon Steel SS316 / 304 SS304

* Available on request

Testing Pressure in bar (API 598) :

Materials WCB &
LCC/LC3
CF8M /CF8 LCB
HYDRO SHELL 30 29 28
SEAT 22 21 21
AIR SEAT 07 07 07

Dimensional Details :

DN L H
closed
ØD ØC Cv Weight
(approx.)
[mm] [mm] [mm] [mm]   [kgs]
50 216 668 200 50.8 260 40
65 241 698 200 63.5 420 55
80 282 875 250 76.2 625 100
100 305 1075 300 101.6 1150 140
125 381 1315 300 127   160
150 403 1445 300 152.4 2650 205
200 419 1900 350 203.2 4850 350
250 457 2000 500 254 7750 710
300 502 2340 500 304.8 11500 770

Cast Bellow Seal Gate Valve, butt weld end acc. to ASME B 16.25, face to face as per ASME B16.10 and with ACME stem screw thread and grounded shaft. Multiply bellow with long service life made of stainless steel.Min. life cycle of Bellow tested for 10,000 cycles, metal back seat, safety stuffing box packing made of pure graphite/PTFE, spiral wound bonnet gasket made of stainless steel with graphite or PTFE filler material, housed in a tongue and grooved flange.

Carbon steel : Body and Bonnet made of cast material WCB, seat ring hardfaced with stellite, wedge made of SS 410/WCB, hardfaced with stellite .
Stainless steel : Body and Bonnet made if cast material CF8M/CF8, seat ring hardfaced with stellite, wedge made of CF8M/CF8, hardfaced with stellite.
Low temperature carbon steel : Body and Bonnet made if cast material CF8M/CF8, seat ring hardfaced with stellite, wedge made of CF8M/CF8, hardfaced with stellite.