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** Colson Industries Ltd**
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DFB Series Double Block Bleed Valve
** **
** **
DFF Series Double Block Bleed Valve
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DFF Series Double Block Bleed Valve
Ball/Needle/Ball Flanged DBB
Size range 1/4 Inch to 3 Inch
Class rating 150 to 2500lb

Material 316ss to Super Alloys

* Wide choice of Flange sizes and Pressure ratings.
* Robust HIGH pressure designed to be maintained
* Ball Valve has anti-blowout stem for safety
* Floating ball design for positive shut-off
* Replaceable seats and seals for extended life
* Top Sealing Bonnet style
* NON-Rotating hard tip on bleed valve for effective shut-off
* Back sealing on the stem and adjustable gland packing
* Stem Seal below actuating threads to prevent contamination
. and gauling of threads
* Metal/Metal bonnet seal for pressure tightness
. even at elevated temperatures
* Choice of Block, Block and Bleed or Double Block and Bleed
* Bleed Port with socket pressure plug or Tube fitting
* 316 ss to NACE Specification, Full material traceability

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