Model 6MNB0 pages

Model: 6MNB & 10MNB
SINGLE BLOCK & BLEED
MONOFLANGE VALVE

The 6MNB is a range of lightweight Single Block & Bleed
Monoflange isolation valves that are ideally suited to a wide
range of instrumentation applications via standard flanged
pressure take-off points.

Photograph to follow

The compact design incorporates the Isolation valve, Vent valve
and outlet into a single one-piece body. This not only ensures
that potential leakage paths are kept to an absolute minimum
but offers significant weight and component cost savings when
compared to other conventional installation solutions.
All units incorporate the Budenberg 6N Heavy Duty Needle Valve
assembly that features all metal seating and true metal to metal
body / bonnet connections. Monoflanges are manufactured in a
full range of materials, flange types and ratings as well as having
a choice of flange, screw or kidney flange outlet connections.
Outlet

Units can undergo full material and product testing / certification
to suit any project or customer requirement.

Vent

Process

Construction
Manufactured from a single piece forging or forged barstock
that incorporates all the Needle Heads and outlet connections.

Temperature Rating
-54 to +538 Deg C (-65 to +1000 Deg F) dependant upon the
stem packing material and pressure rating in use. (see datasheet
VAC 041 for pressure / temperature performance graph)

Configuration
Single Block/Isolation Valve & Vent/Drain Valve
Inlet
The flanged process connection can be made to suit any
International size or rating including, but not restricted to:
* ANSI B16.5 Flanges from 1/2" to 4" in ratings from 150 to
2500 lbs in RF, FF, SRF and RTJ flange face styles.
* API Flanges up to 2.1/16", 3000, 5000 & 10,000 lbs
* Norsok L-100 Compact flange design
Vent
1/4" NPT female vent as standard, others available upon request
Blank and Vent plugs are available (see DSheet VAC-048)
Outlet
In Flange by Flange variants the outlet flange is identical to the
inlet process flange as listed above.
Alternatively the output can be:
* Screwed female connections, (1/2" NPT standard)
* Kidney Flanges for direct connection onto transmitters
* Quick release compression fittings
Bore Sizes
6mm (standard), 8mm can be provided dependant upon the
flange size and rating
Fire safe
Fire safe to BS 6755 Pt 2
NACE
All body & wetted parts materials comply with the requirements
of NACE MR 1705 / EN15156 or MR 0103 dependent upon the
environmental or application requirement

Rev-2 August 2009

Pressure Rating
Pressure rating up to 10,000 psi (690 barg)

Needle Valve Assemblies
Heavy Duty Needle Valve Head Assemblies incorporate a full
range of features including:
* Anti static , anti blow-out stems
* Self centering, non-rotating stem tips provide a true metal to
metal valve seat whereby the material of the stem tip is one
grade harder than the body thus resisting over tightening,
preventing wear and guaranteeing a 100% bubble tight seat
closure, first time, every time
No Threads in the process stream
All Needle Valve assemblies incorporate 'soft' parent metal
sealing rings that are located directly below the head to ensure
that no threads are directly in the process stream
Stem Packing
Fully adjustable, dynamically responsive multi ring gland
sandwich', in either PTFE or Graphoil, resists all operating
pressures and processes.
Other Features
* Hydro static and Gas Pressure Testing to BS 6755 Pt 1 or
API 6A
* Material thickness as defined in ANSI / ASME B16.34
* Flange Dimensions as defined in ANSI / ASME B16.5
* Heat code traceable Material Certification to EN 10204 3.1b
* Full range of testing, certification and documentation can be
supplied including PMI and a full range of NDE Testing
* Pressure boundary designs calculated to ASME VIII Div 1
* Designed with 4:1 safety factor
* Optional locking and anti tamper head assemblies

Designed and Manufactured in UK.

Datasheet VAC-0