Double Block And Bleed Valves
FEATURES
Compact Design Ball Needle Ball Configuration
Forged Single Piece and Two/Three Piece Bolted Design Options
Fire Safe as per API 6FA
Anti-Blow-Out Ball Tip Stem design as Standard of Vent Needle Valves
TECHNICAL SPECIFICATIONS
Valve Body Construction
-
Single, Two and Three Piece Screwed and Bolted Design
Ball Design Construction
-
Floating and Trunnion mounted
End Connection Variants
-
Flange x Flange, Flange x Threaded
-
Flange Variants – RF and RTJ
End Connections
-
NPT, BSPT and Flanged as Standard
Size range
-
1/2” to 2” and 12mm to 50mm Flange
-
End and Male/Female Threaded Pipe End Connections
Bore/Port Options
-
Reduced and Full Bore options
Operating Pressure Range
-
Class150 to Class 4500
Gland Seal Materials
-
PTFE, RPTFE as Standard for Bleed Needle Valve and Ball Valve Stem
-
Graphite on request in High Temperature Applications
Ball Valve Seat Materials
-
PTFE as Standard up to 200°C
-
Graphite for temperatures up to 640°C
Design Standards
- Shell Design
-
In Accordance with ASME B16.34
- Flange
-
In Accordance with ASME B16.5(RF/RTJ)
- Threads
-
ANSI B1.20.1
- Pressure Test
-
ASME B16.34, API 6D
-
Fire Safe as per API 607
INDUSTRIES
Oil & Gas
Chemical & Petrochemical
Power Generation
Food & Beverage
Note: -As a drive for continuous improvements of our products, Thomas & Brian® reserves the right to change the descriptions contained in this brochure without prior notice. Consult local Agent or Factory for revisions and/or service related issues.