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Product structural features
Stop valve with bellow sealacc.to ANSI is applicable to the cutting
and connection of pipelines medium that are used in various inductries
such as peroleum,chemical industry,pharmacy,chemical fertilizer,electric
power industry etc under nominal pressure of CLASS150-900LBS and
working temperature of 29~350?
Main structural fealtures
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 steated
by nitriding steatment,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 clearer.
6.The part material,flange and butt weld end dimension may be selected
according to current operating condition and users'requirement,so
that meet the requirements of various engineering.
Technical specification:
| Structural formation |
BB-BG-OS&Y |
| Driving maner |
Hand-operated |
| Electric-actuated |
| Design standard |
AMSE B16.10 BS1873 |
| Face to face |
ASME B16.10 |
| Flange ends |
ASME B16.5 |
| Test&inspection |
API 598 |
Products performance specification:
| Nominal pressure |
(Mpa) Shell test |
(Mpa) Sealing test |
Suitable temp. |
Suitable madium |
| 150 |
3 |
2.2 |
=350 |
Water oil & gas |
| 300 |
7.5 |
5.5 |
| 600 |
15 |
11 |
| 900 |
22.5 |
16.5 |
Main parts materials:
| NO. |
Part name |
Material |
| 1 |
Body |
ASTM A216-WCB ASTM A351-CF8 CF8M CF3 CF3M |
| 2 |
Dise |
ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304 F316 F321 F304L
F316L |
| 3 |
Split ring |
ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304 F316 F321 F304L
F316L |
| 4 |
Disc bushing |
ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304 F316 F321 F304L
F316L |
| 5 |
Stem |
ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304 F316 F321 F304L
F316L |
| 6 |
Gasket |
Flexible Graphite+stainless steel PTFE |
| 7 |
Bonnet |
ASTM A216-WCB ASTM A351-CF8 CF8M CF3 CF3M |
| 8 |
Bellow assemble |
ASTM A182-F304 F316 F321 F304L F316L |
| 9 |
Packing |
Flexible Graphite PTFE |
| 10 |
Gland |
ASTM A216-WCB ASTM A351-CF8 CF8M CF3 CF3M |
| 11 |
Yoke nut |
ZQA19-4 |
| 12 |
Handwheel |
ASTM A536Gr.60-40-18 A216-WCB |
| 13 |
Guiding piece |
45 WCB?304?316?304L 316L |
| 14 |
Bolt |
ASTM A193-B7?A193-B8 A193-B8M |
| 15 |
Nut |
ASTM A194-2H?A194-8?A194-8M |
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