Monoflange Valves

Key Block DBB Valves

Model No. GV-134-MKB-DBB

Key Block GV-134-MKB-DBB Double Block & Bleed
The GV-134-MKB-DBB features two independently operable 5.0mm bore globe style needle valves for isolation service with an intermediate 5.0mm bore globe style needle valve for venting service. Metal seating features as standard for all valves.

The are integrally forged one piece block & bleed assemblies for primary isolation of pressure take-offs, where the valve is directly mounted to the vessel or process pipe. Instruments may be directly mounted to the valves outlet or alternatively remotely mounted with gauge line / impulse pipe line.

STANDARD FEATURES

  • 1/2 - inch NPT threaded female outlet as standard to ANSI / ASME B1.20.1.
  • 1/2 - inch NPT threaded female vent connection to ANSI / ASME B1.20.1.
  • Material thickness to ANSI B16.34.
  • ANSI B16.5 flanged inlet connection 1/2" to 2" sizes 150 lbs rated to 2500 lbs rated.
  • API flanged inlet connections Size to 21/16". 3000psig, 5000psig & 10000psig rated.

APPLICATIONS

  • Double Block & Bleed
  • Level Measurement
  • Pressure Measurement
  • Chemical Injection
  • Sampling
  • Flow Measurement

(OS &Y) and Globe Style Needle Valve Gland packing Materials Standard Valves are offered with Graphite. PTFE is also available as an option

SIZE
(inch)
RATING
(Ib.)
A
(mm)
ØB
(mm)
1/2" 150 57 89
3/4" 150 57 99
1" 150 57 108
11/2" 150 60 127
2" 150 63 153
1/2" 300 57 96
3/4" 300 60 118
1" 300 60 124
11/2" 300 63 156
2" 300 63 165
1/2" 600 61 96
3/4" 600 64 118
1" 600 64 124
11/2" 600 67 156
2" 600 67 165
1/2" 900 64 121
3/4" 900 64 130
1" 900 67 150
11/2" 900 67 178
2" 900 72 216
1/2" 1500 64 121
3/4" 1500 64 130
1" 1500 67 150
11/2" 1500 67 178
2" 1500 72 216
1/2" 2500 64 134
3/4" 2500 64 140
1" 2500 67 159
11/2" 2500 72 203
2" 2500 73 235

Note: 1. Packing is optional with graphite for high temperature to 450℃