
Alco BQ Series 3/4" 800# Double Block & Bleed (DBB) Valve
Rp123000.00
The Alco BQ Series 3/4" 800# Double Block & Bleed (DBB) Valve is a flanged x flanged floating ball valve featuring a Ball/Ball configuration for primary and secondary isolation. This double block valve is designed for critical service applications where absolute shut-off and compact design are essential. With a robust Duplex F51 body and high-performance PEEK trim, it ensures superior corrosion resistance, mechanical strength, and temperature stability.
The BQ Series is particularly suitable for applications in the oil, gas, and chemical industries, offering enhanced safety, system integrity, and ease of maintenance.
Technical Specifications
Feature | Specification |
Manufacturer/Brand | Alco Valves |
Series | BQ Series |
Valve Type | Double Block (Ball/Ball) Valve |
Size | 3/4" (DN 20) |
Pressure Rating | ASME Class 800 (approx. 138 bar) |
End Connections | Flanged x Flanged (ASME B16.5) |
Body Material | Duplex Stainless Steel F51 (ASTM A182 F51) |
Trim Material | PEEK (Polyether Ether Ketone) |
Configuration | Ball / Ball |
Valve Design | Floating Ball |
Flow Direction | Uni-directional |
Temperature Range | -46°C to 200°C (depending on service conditions) |
Compliance | NACE MR0175, API 598, ISO 5208 |
Fire Safe Design | Optional |
Testing | Hydrostatic and gas seat testing to API standards |




