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Lockable Stainless Steel Double Block & Bleed Twin Ball Valve
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Lockable Stainless Steel Double Block & Bleed Twin Ball Valve

Valve Type: Twin Ball Double Block & Bleed (DBB)
Body Material: Forged Stainless Steel 304 / 316, customizable
Seat Material: PTFE, PEEK, PCTFE (KEL-F), Devlon V, Metal Seat, customizable
Pressure Rating: ASME Class 150–2500
Size Range: 1"-36" (DN25-DN900)
End Connection: Flanged RF / RTJ
Ball Type: Trunnion-Mounted Twin Ball
Sealing Design: True DBB, bi-directional isolation
Operating Temperature: -40°C to 250°C (depending on material)
Operation: Manual, Pneumatic, or Electric Actuator; ISO 5211 Direct Mounting for Automation
Safety Features: Fire-Safe, Anti-Static, Anti-Blowout Stem
Brand: SLVCN
Availability:
Quantity:
  • SLVCN

Lockable Stainless Steel Double Block & Bleed Twin Ball Valve

Product Description

SLVCN Lockable Stainless Steel Twin Ball DBB Valve provides secure double-block isolation for critical pipelines in Oil & Gas, Chemical, Petrochemical, and other high-risk industries. Its forged three-piece body, with a one-piece central core, ensures high structural integrity while reducing potential leak paths. The twin ball design with a central bleed port allows safe depressurization and leakage verification, preventing cross-contamination or overpressure incidents.

Equipped with dual independent stems and ISO 5211 mounting pads, the valve supports manual or automated actuation with pneumatic or electric operators. Industrial-grade stainless steel materials and optimized ball-seat geometry ensure reliable, long-term sealing under harsh operating conditions. Anti-static, fire-safe, and blowout-proof features comply with stringent safety standards, providing confidence in demanding process environments.


Key Features

✓ True Double Block & Bleed Safety
Twin ball structure with a central bleed port provides independent upstream and downstream isolation, allowing safe pressure release and leakage verification in critical pipelines.

Forged Three-Piece Body for High-Pressure Service
Forged stainless steel construction delivers high structural strength, while the three-piece flanged body simplifies maintenance and reduces system downtime.

Lockable Position Indicator & Operation Safety
Top-mounted lockable position indicator clearly shows valve status and prevents accidental operation, enhancing safety in high-risk service conditions.

Automation-Ready with ISO 5211 Mounting
Dual independent stems and ISO 5211 mounting pads support manual operation or easy integration with pneumatic and electric actuators.

Reliable Sealing for Harsh Service
Optimized ball and seat geometry with industrial-grade stainless steel materials ensures long-term, stable sealing under corrosive and high-pressure conditions.

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  Tel: +86-189-0515-4687
            +86-180-6165-9285
  Phone: +86-25-5885-5535
  E-mail: info@slv-cn.com
  Address: No.22, Liuzhou North Road, Pukou District, Nanjing, Jiangsu, China

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