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Three-piece Soft Sealing Ball Valve

Short Description:

Blowout-proof Stem and Primary Stem Seal
Stem shoulder is integral part of stem, retained internally to prevent stem blowout from pressure in body cavity. Primary stem seal prevents leakage to atmosphere, also serves as low-torque bearing.

Precise, Smooth Ball
Ball sphericity and surface finish are key factors in valve life, pressure-holding capability, and operating torque.


Product Detail

Product Tags

Performance Specification

Pressure Testing pressure at constant temperature (MPa) Applicable temperature Applicable medium

 

The shell testing High-pressure seal Low-pressure seal
Nominal rating pressure(PN) 1.6 2.4 1.76 0.6  

-29~121℃
or upon the user requirement

Natural gas,liquefied gas,coal gas,oil,water, requirement

2.5 3.75 2.75 0.6
4.0 6.0 4.4 0.6
6.4 9.6 7.04 0.6
10.0 15.0 11.0 0.6
16.0 24.0 17.6 0.6
Pressure classes(Class) 150 2.94 2.16 0.6
300 7.67 5.62 0.6
400 10.2 7.48 0.6
600 15.3 11.23 0.6
900 23.0 16.85 0.6
1500 39.0 28.6 0.6

Technical Specification

Design reference GB API ASME
Design standard GB/T12237 API6D ASME B16.34
Structural length Flanged ends GB/T12221

API6D

ASME B16.10
Welded connection GB/T12221
Flanged ends GB/T9113JB/T79 ASME B16.5
Butt-welding ends GB/T12224 ASME B16.25
Test &inspection GB/T13927 JB/T9092 API6D  API598

Note:The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.

Major Parts Material Form (soft Seal)

No. Accessory name Material
GB ASTM
1 Gasket Graphite+stainless steel B12.10-304/F.G
2 Seat PTFE PTFE
3 Bonnet 25 A105
4 Nut 45 A194-2H
5 Stud 35CrMoA A193-B7
6 Body 25 A105
7 Ball* 25+Cr A105+Cr
8 Stem** 12Cr13 A276-410
9 Gasket PTFE PTFE
10 Packing seat 12Cr13 A276-410
11 Packing Graphite Graphite
12 Packing gland  WCB A216-WCB
13 Bolt 35CrMoA  A193-B7
14 Locating piece Q235A A36
15 Ring 65Mn AISI1566
16 Handle KTH350-10 A47-667Gr32510

Note: The material of this part about the anti-sulphur typo valve is GB(12Cr18Ni9+ NIP)ASTM(A182-304+NIP).
The material of this part about the anti-sulphur type valve is GB(12Cr18Ni9)ASTM(A276-321).
Major parts of the valve series and materials of sealing surface differ according to actual working condition and customer's special requirement.


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