Design and manufacturing:API 6D, GB/T 12237
The structural length:GB/T 12221
Connection forms:HG/T 20592-20605, GB/T 9112-9124
Inspection and test:GB/T 13927
Caliber: 1/2″ ~ 48″ (DN15 ~ DN1200)
Pressure temporature level:GB/T 12224, ASME B16.34
Drive mode:Worm Gear
Pressure: PN16 ~ PN25
Operating Mechanism (Drive Mode):
Worm Gear Operated (TG221)
Materials
• Body: Carbon Steel (A105), Stainless Steel (304, 316), or Alloy Steel
• Ball: Stainless Steel (304, 316)
• Seals: PTFE, RPTFE, Metal-to-Metal (for high temperature applications)
• Stem: Stainless Steel
Certifications
• Compliance: API 6D, ISO 9001, CE, PED, and other international standards.
The valve consists of a fully welded body and a carbon-reinforced PTFE sealing seat, designed for frequent operation in complex and chemically aggressive environments. The precision-ground stainless steel ball ensures long-term reliable service with consistent sealing performance over years of operation.
A floating ball design is employed, with a beveled spring washer ensuring that the seal ring is always tightly pressed against the ball. This maintains tight shut-off even under fluctuating pressure conditions.
To prevent stem leakage, the valve features a dual O-ring sealing structure around the stem, ensuring smooth rotation while maintaining a secure, leak-proof seal.
— Maintenance-free, self-adjusting, and low-friction design makes installation easy and ensures long-term, reliable performance with minimal operating cost.
— The operating handle is detachable and reversible for flexible installation.
— The valve body contains no heavy or unreliable cast components.
— Simple installation and adjustment mechanism for quick commissioning.
— Optional extended stem design facilitates insulation in buried or elevated applications.
| No. | Part Name | Material Type | Material Grade |
|---|---|---|---|
| 1 | Body | Carbon Steel | ST37.8 |
| 2 | Stem Chamber | Carbon Steel | Fe52DP |
| 3 | Ball | Stainless Steel | AISI304 |
| 4 | Stem | Stainless Steel | AISI303 |
| 5 | Seal Ring | Teflon | PTFE |
| 6 | Bevel Washer | Spring Steel | — |
| 7 | Support | Stainless Steel | — |
| 8 | Screw | Steel | — |
| 9 | O-Sealing Ring | Synthetic Rubber | FPM |
| 10 | Gasket | Teflon | PTFE |
| 11 | Floor Clip | Cast Steel | AISI304 |
| 12 | Handle | Galvanized Steel | — |
Applications:
o Oil and Gas Pipelines
o Natural Gas Transmission
o City Gas Distribution
o Petrochemical Industry
o Heat Supply Systems
o Water Systems (including buried installations)
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