Instrument Class DBB Valves
The Dublok range of integrally flanged manifolds is designed specifically for applications where modular construction is inappropriate or unnecessary.
Dublok integral double block and bleed manifolds are used for primary isolation duties for liquid or gaseous service. Designed for weight and space saving they are available in a wide range of materials, sizes and head unit combinations to meet all requirements.
Applications
- Instrument loop takeoff points
- Positive isolation
- Double block and bleed
- Chemical injection
- Sampling points
- Blowdown points
- Drains / Vents
Valve Types
- Single block
- Single block and bleed
- Double block
- Double block and bleed
Connection Options
- Flange by threaded
- Flange by flange
- Threaded by threaded
- Hub by threaded
- Hub by hub
Integral Double Block & Bleed (DBB) Valves
- Double block and bleed valve
- Flanged inlet / NPT threaded outlet or flange by flange connection with choice of sizes
- Single one-piece forged body gives compact unit with fewer potential leak paths
- Available in a wide range of different materials and a choice of bore sizes to suit various applications
- Full range of sizes in both the flanged inlet and the threaded outlet.
DBB Valve type options:
BDBBX – Ball primary, Needle vent, Ball secondary
DBBX – Needle primary, Needle vent, Needle secondary
YDBBX – OS&Y primary, Needle vent, Needle secondary
Integral Double Block (DB) Valves
- Double isolate ball valve
- Available in a wide range of different materials and a choice of bore sizes to suit various applications
- Full range of sizes in both the flanged inlet and the threaded outlet
DB Valve type options:
BDBX – Ball,Ball
YDBX – OS&Y, Needle
DBX – Needle, Needle
Integral Single Block & Bleed (SBB) Valves
- Single block and bleed valve
- Single one-piece forged body gives compact unit with fewer potential leak paths
- Available in a wide range of different materials and a choice of bore sizes to suit various applications
- Full range of sizes in both the flanged inlet and the threaded outlet
SBB Valve type options:
BSBBX – Ball Primary, Needle Vent
YSBBX – OS&Y primary, Needle vent
SBBX – Needle primary, Needle vent
Outside Screw & Yoke Primary Isolation (YDBBX) Valve
- Double block and bleed three valve manifold
- Flanged inlet / threaded outlet connection with choice of flange / thread sizes
- Single one-piece cast body with 2 isolate (1 OS&Y on primary isolation)and 1 vent valves
- 1/2” NPT vent connection (plugged)
YDBBX Valve type options:
YDBBX – OS&Y primary, Needle vent, Needle secondary
