BB-BG-OS&Y Bellow Globe Valve Gear Pneumatic DIN3356 BW
Hasteloy Out Blowing Safe Stem
Bellow Globe Valve
Purpose
Globe valve with bellow seal acc.to ANSI is applicable to the
cutting and connection of pipelines medlum that are used in various
indus-tries such as peroleum,chemical industry,pharmacy.chemical
fertilizer,electric power industry etc under nominal pressure of
CLASS150-1500LBS and working temperature of-29-350.
Structural features
1.This product has logical structure.reliable seal.excellent
performance and nice design.
2.The seal surface is build-up welding with Co hard alloy,which is
attrition-resistant,corrosion-resistant,has good friction resistant
and long life.
3.The stem is quenched and tempered.and its surface is treated by
nitriding treatment,thus it has good corrosion resistant and
friction resistant.
4.It has double seal capability.thus is more reliable.
5.The stem may show the position of lift,thus it is chearer.
6.The part material,flange and butt weld end dimension may be
selected accordng to current operating condition and
users'requirement,so that meet the requirements of various
engineering.
Technical specification
Structural formation: BB-BG-OS&Y
Driving manner: Hand-operated Electric-actuated
Design standard: DIN3356
Face to face: DIN3202
Flange ends: DIN2543-2545
Test & inspection: DIN3230
Notes: The size of serial, valve connecting flange can be design
according to customers requirement,
Products performance specification
Nominal pressure(MPa) | Shell test(MPa) | Sealing test(MPa) | Suitable temp.(℃) | Suitable medium |
1.6 | 2.4 | 1.76 | ≤350℃ | Water oil & gas |
2.5 | 3.75 | 2.75 |
4.0 | 6.0 | 4.4 |
6.4 | 9.6 | 7.04 |
Main parts materials
NO. | Part name | Material |
1 | Body | GS-C25 1.7363,1.4308,1.4408,1.4306,1.4301 |
2 | Disc | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304,F316,F321,F304L,F316L |
3 | Pin | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304,F316,F321,F304L,F316L |
4 | Bellow assemble | 1Cr18Ni9Ti,304,316 |
5 | Stem | ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304,F316,F321,F304L,F316L |
6 | Bonnet | GS-C25 1.7363,1.4308,1.4408,1.4306,1.4301 |
7 | Packing | Flexible graphite,PTFE |
8 | Gland | GS-C25 1.7363,1.4308,1.4408,1.4306,1.4301 |
9 | Guide piece | 25,45,304,316 |
10 | Yoke nut | ZQA19-4 |
11 | Hand wheel | WCB,QT400-18 |
12 | Bolt | ASTM A193-B7,A193-B8,A193-B8M |
13 | Nut | ASTM A194-2H,A194-8,A194-8M |
14 | Gasket | Flexible graphite + stainless steel,PTFE |
