E-mail: info@slv-cn.com       Tel: +86-189-1394-4686
True DBB Integrated Twin Ball Isolation Valve
You are here: Home » Products » Forged Steel Ball Valve » True DBB Integrated Twin Ball Isolation Valve

loading

Share to:
facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
kakao sharing button
sharethis sharing button

True DBB Integrated Twin Ball Isolation Valve

Valve Type: Twin Ball Double Block & Bleed (DBB) Isolation Valve
Size Range: 1"–36" (DN25–DN900)
Pressure Class: ASME Class 150 / 300 / 600
Body Materials: Stainless Steel 304 / 316, Carbon Steel WCB, Duplex & Special Alloys
Ball Design: Trunnion-Mounted Twin Ball
End Connection: Flanged RF / RTJ
Sealing System: True DBB with Central Bleed Cavity
Seat Options: PTFE, PCTFE, PEEK, Devlon V, Metal Seat
Operation: Dual Manual Handles; Pneumatic or Electric Actuation Optional
Design Standards: Designed in accordance with API 6D, BS 5351, ASME B16.34
Brand: SLVCN
Availability:
Quantity:
  • SLVCN

Manual Double DBB Ball Valve

Product Description

The SLVCN Double Block & Bleed Twin Ball Valve is designed for applications where pipeline safety, compact installation, and reliable isolation are critical. By integrating two ball valves and a bleed function into a single stainless steel body, it delivers true DBB performance while reducing system complexity.

The trunnion-mounted twin ball structure ensures stable operation and consistent sealing under pressure. With multiple seat material options and compatibility with manual or automated actuation, this valve is widely used in chemical processing, pharmaceutical systems, energy pipelines, high-purity fluid handling, and general industrial utilities.

Key Features

✓ Integrated Twin Ball Isolation Structure

Two ball valves arranged in series provide independent upstream and downstream isolation within one compact body.


✓ Central Bleed Port for Safety Control

The cavity between balls allows pressure release, leakage detection, and safe maintenance procedures.


✓ Trunnion-Mounted Ball Support

Fixed ball design minimizes friction and ensures reliable sealing under high differential pressure.


✓ Multi-Seat Configuration

Soft or metal seats are available to match different temperature, pressure, and media conditions.

✓ Forged Valve Body (Steel, Stainless, Duplex)

High-quality forged construction offers robust performance, corrosion resistance, and long service life across multiple material options.


✓ Fire-Safe Design for Hydrocarbon Service

Fire-safe construction maintains sealing integrity during fire exposure, meeting emergency isolation needs for oil & gas and chemical industries.

Previous: 
Next: 
Contact Us
Leave a Message
Contact Us
  Tel: +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

Quick Links

Product Category

Product Category

Copryright © 2024 Jiangsu Shoulong Valve Co., Ltd. All Rights Reserved. Sitemap. Support by hnjingdian.cn. Privacy Policy