Bestobell Valves News: April 2005

New range of stainless steel swing check valves

During the past few months we have developed a new range of stainless steel swing check valves and manual/actuated gate valves details of which can be found below.

We have recently updated our website, which now includes up to date product information and details of our global distribution network - please visit www.bestobellvalves.com.

In addition there is an exciting new development at Bestobell - we have recently expanded our industrial gas business into the LNG sector, forming a new business - Bestobell LNG, initial details of which can be found on www.lngvalves.com.

To manage this new business we have brought back a former colleague - Andy Brown who will manage Bestobell LNG. Andy has recently returned from Qatar where he has been actively involved in the LNG sector for the past few years. If you would like to contact Andy to catch up on his travels, or have a specific interest in our new business, please contact Andy by e-mail on andrewb@lngvalves.com or +44 (0) 7837 387350.

Swing Check Valves

Stainless Steel Bestobell Valves has introduced a range of PN50 (Class 300) Stainless Steel Swing Check Valves from DN25 (1") to DN80 (3") for use in cryogenic applications. The Valves will be CE marked and suitable for sales in both Europe and ROW markets.

Description

A stainless steel bodied swing check valve with a PTFE seal incorporated into the valve disc to give a drop tight shut of at ambient temperatures and a leakage rate complying with EN1626 (Valves for Cryogenic Service) under cryogenic conditions. The design has a bolted bonnet as standard on all sizes and incorporates the 'Super-Finish' Seat face.

All valves are degreased for oxygen duty, assembled in clean room conditions and sealed in robust polythene bags for despatch.

Product Range
DN25 25mm Swing Check Valve
DN40 40mm Swing Check Valve
DN50 50mm Swing Check Valve
DN80 80mm Swing Check Valve

Connections:
Schedule 10 Butt Weld Bodies
Socket Machined End Bodies

Delivery Lead Time:
7 -8 weeks

Features and Benefits:

• Precision high quality investment castings.
• 'Super-Finish' seat face
• Because the seat is manufactured as a separate part, a high quality
• lapped finish can be produced on the seat face.
• Offset centre of gravity of the disc assembly.
• The balance of the disc assembly is away form the pin centre to give a more positive shut-off.
• The disc hits the seat face squarely, giving even wear across the seal.
• Improved low differential pressure seating.
• Very low leak rates achievable.

Manual/Actuated Stainless Steel Gate Valves

Description

Stainless steel full bore rising spindle gate valve - pneumatically actuated or manual for inclusion into cryogenic systems. The larger bore on this range of gate valves reduced cavitation on trailer pumps resulting in increased flow rates.

The design incorporates tapered faces on the upstream face of the body and wedge, together with a PTFE seal fitted into the 'flexible wedge'.

A unique feature of this product is the removable body seat to eliminate the risk of damage caused when the valve is welded into the customers' pipeline.

All valves are degreased for oxygen service, assembled under clean room conditions and sealed in robust polythene bags prior to despatch before leaving our clean area.

Technical Data

Design Standards
The valve meets the requirements of BS EN 1626 (1999)
Test Pressures    Working Pressures
Body Test 60
Seal Test 44 Bar     Bar 40 Bar @ -196°C to +65°C
150 psi max Actuator Inlet Pressure
25 psi min Actuator Inlet Pressure (see note)

(Note: Speed of actuation will depend on valve pressure and air inlet pressure. Fastest actuation will be achieved at lower valve pressure and max. inlet pressure).

Manual Range
DN40 40mm stainless steel gate valve
DN50 50mm stainless steel gate valve
DN65 65mm stainless steel gate valve
DN80 80mm stainless steel gate valve

Actuated range Specifications
Range (mm)
65
80
   
CL to Gland (mm)
287
320
   
CL to Actuator Top (mm)
517
551
   
Weight(kg)
21.5
27

Materials
All pressure-containing components are manufactured from type 316 stainless steel. PTFE seats and gasket.
Piston and Cylinder Housing - Engineering Polymer
Stainless steel fasteners.

We hope that you have found the above information useful, if you require additional technical information, or drawings please do not hesitate to contact

Steve Fidler - Technical Support Manager
Bestobell Valves,
Tel +44 (0) 114 224 0231
fax +44 (0) 114 2784974 -
email stevef@bestobellvalves.com

In the next few months we will be releasing further new products, details of these will be available shortly via our newsletter or website.

If you feel that any of your colleagues would be interested in this information please feel free to forward it as appropriate.

We look forward to responding to any enquires that you may have for our new and current ranges of cryogenic valves

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