Cryogenic Stainless Steel Gate Valve0 pages

Cryogenic Stainless Steel Gate Valve
Bolted Bonnet - Extended Spindle
DN50 - DN100 (2” - 4”)
Description
Stainless Steel extended spindle gate valve with bolted bonnet integral soft seat
and bronze internals. Available with butt weld ends, the valve has a wedge seat
design for tight shut off designed to seal on downstream seat only in order to
prevent liquid lock. The bolted bonnet allows for simple site maintenance, with
easy access to the serviceable parts of the valve.

All valves are degreased for oxygen duty, assembled in clean room conditions
and pressure tested prior to despatch.

Product photograph

Maximum Working Pressure (MWP)
(Subject to end connection)
40 bar (580 psi) at –196°C to +65°Ct
Body Strength Test 1.5xWP = 60 Bar (870 psi)

Features
•tUnique Bestobell gate valve design featuring complete removal of the wedge
and body seat with the headworks (see opposite). This enables the removable
seat to have a lapped finish, instead of a standard machined finish, giving
superior shut off and greatly increased life of the PTFE wedge seal. The seat
itself can also be replaced, eliminating the need to cut out the valve body from
the line once seat damage has occurred, as required with all other gate valves
•tBestobell “Flexi-wedge” phosphor bronze disc with PTFE seal, mounted within
the stainless steel wedge, for tight shut off in cryogenic conditions despite the
thermal expansion and contraction
•tBolted bonnet design for easy removal of headworks even in confined spaces

Technical
Manual Gate Valves with bolted bonnet, extended
bonnet, socket weld and butt weld ends, soft PTFE
seats. Actuated valves available.
ISO 9001 accreditation – design and manufacture to
ASTM B31.3 & BSEN1626.
Optional full material traceability backed by BSEN
10204 3.1 / 3.2 Certification.

•tLightweight design gives excellent thermal characteristics

Designed and engineered for use with O2, N2, Ar,
CO2, He, Kr, Ne, H2, C2H4 and N2O and LNG service.

•tAnti-blow out spindle and one-piece high strength stem design for operator
safety

Marking according to Pressure Equipment
Directive 97/23/EC.

•tSpring loaded PTFE chevron gland design, phosphor bronze insert and low
torque stem thread for long service life and easy manual operation

π Marking to Directive 99/36/EC only on written
request complete with purchase order.

•tScrewed and welded high strength extension tube and bonnet joints

For other options please contact us.

•tLightweight ergonomic handwheel
•tFull bore for high CV value and minimal flow restriction through the valve

Ref: 0000 05/11

T +44 (0) 114 224 0000

sales@bestobellvalves.com

Bestobell, President Park, President Way, Sheffield, S4 7UR

F +44 (0) 114 278 4974

www.bestobellvalves.com

United Kingdom