Key Specifications / Features

Model No. : 181101011

Worm gear trunnion-mounted ball valve with heavy-duty forged stainless steel construction for high-pressure industrial pipeline service. This Class1500 full port DBB ball valve in NPS8 DN200 adopts a three-piece bolted body with heavy stud bolts and nuts. It comes fitted with worm gear operator for manual torque reduction during valve operation. Equipped with body cavity relief and seat sealant injection port, it supports in-line sealing maintenance. Designed for oil, gas and chemical pipelines, the stainless steel material provides strong anti-corrosion property and stable sealing performance under severe working pressure.


Detail Information

Valve style: Trunnion ball valve
Body build: 3-piece forged bolted assembly
Flow passage: Full port
Seat characteristic: Double block and bleed (DBB)
Operation: Worm gear operated
Pressure class: Class 1500 LB
Nominal size: NPS 8 (DN200)
Body material: ASTM A182 F316 stainless steel
End connection: Flanged end
Design codes: API 6D, ASME B16.34
Flange criteria: ASME B16.5
Face-to-face length: Conforms to API 6D standards
Ball material choices: ASTM A182 F304, ASTM A182 F316, hard overlay available upon request
Seat material choices: PTFE, RPTFE, PEEK, Devlon, metal-to-metal
Stem material: ASTM A182 F316
Fasteners: ASTM A193 B7 studs paired with ASTM A194 2H heavy nuts
Operation temperature: -29°C to +180°C, cryogenic configuration optional
Applicable medium: Natural gas, crude oil, refined petroleum, chemical process fluids
Inspection and test: Per API 6D requirements
External finish: Epoxy coating for carbon steel; raw machined finish for stainless steel
Feature: Body cavity relief, seat sealant injection port

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Founded in 2013, Bosseal is a professional industrial valve manufacturer based in Suzhou, China. We specialize in the design and production of Ball Valves, Gate Valves, Globe Valves, Check Valves, Butterfly Valves, Plug Valves, and Piping Strainers. All our products are manufactured in strict compliance with international standards, including API, ASME, ISO, DIN, BS, and EN. With a strong focus on quality control and engineering capability, we are committed to providing reliable and high-performance valve solutions for global industrial applications.

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