New Spark Arrestor ranges to permit diesel engines to be used in
offshore
oil platforms and in Defined Hazardous Zones
March 2011
Chalwyn Spark Arrestors developed specifically to meet ATEX 94/9/EC (incorporating EN 1834) for oil and gas exploration and production markets are now available from Chalwyn distributors. They come with Certificate of Conformity that confirms the test acceptance to EN1834 by ‘Sira’, an approved UK Notified Body.
Our Stainless Steel Spark Arrestors were developed specifically to prevent the risk of fire from the ignition of flammable materials caused by spark emission from the exhausts of diesel engines.
This risk can be so high that LNG or Petrochemical Refining site access is often barred unless effective spark arrestors are fitted. USDA or similar forest use approved products that filter the hot particles but allow them to pass out still glowing must now be considered unsuitable for use in any markets where a single spark would ignite any flammable vapours or accidental gas release with concentrations above the Lower Explosive Limit.
Chalwyn’s centrifugal cyclone design spins all live carbon particles in the exhaust gas at high velocity against the outer casing, retaining them until they are quenched to a safe temperature and so rendered inert. Most Chalwyn SSL models can replace existing silencers, maintaining sufficient noise attenuation for normal industrial use with no significant increase in back pressure. The compact SSE range may be fitted in series with a normal silencer for ease of installation and can be used instead of a muffler in offshore and remote locations where less noise attenuation is acceptable. Drawings and application information can be found in this pdf;
he earlier model SAL range (with Carbon Steel body construction) is still available and can be used outside of the European Community. Please contact Chalwyn for full details of our range.
New versions of MPX valves
November 2010
The Chalwyn MPX-300 & -500 air pressure to trip valves are now available with electrical circuit micro-switches. The new valve models MPX-310 and MPX-510 are designed for applications including larger trucks where the overspeed problem is controlled by an air pressure to stop system (please see Systems Guide). When the valve is tripped to the closed position the micro-switch closes a circuit that can illuminate a remote position indication bulb on the vehicle’s dash board, so helping the driver to know that the MPX valve must be manually reset before attempting to restart the engine.
The full range of Chalwyn MPX valves can be seen at http://www.chalwyn.com/pdfs/CE236.pdf
Chalwyn welcomes new international distributors
October 2010
We are pleased to announce that Chalwyn Diesel Engine Safety products are now available through three new channel partners. For Spain & Portugal the Seyber Representaciones Company in Madrid will add Chalwyn to their AMOT representation. For Oman, the Malatan Company will be supporting the local safety requirements of both land drilling operations and local refineries. For Singapore AHF Industries will add Chalwyn to their local AMOT representation.
For Germany, Austria and Switzerland, Chalwyn products can be ordered through the AMOT GmbH Hamburg offices. Please contact Michael Plettner for technical assistance.
For full details of these and other international distributors, please see distributors.
New System Selection Guide for diesel engine applications
September 2010
A new Chalwyn System Selection Guide is available for on-line viewing or downloading.
The brochure provides an overview of the most common types of systems used to mitigate the risk of diesel engine overspeed and includes a description of the solution, a diagram of the components and the functional highlights of the components used in each solution. Use the guide to help you determine the best type of solution for your application.
Videos of why you need a shut off valve
May 2010
3 video presentations are now available by clicking on the link below. These show the (1) 2009 Texas TV article on the dangers of engine runaway, (2) the Chalwyn history and product range (also available in PAL DVD format on request) and (3) The working principle of the AMOT electronic shut down control system and butterfly valve.
http://www.rodadeaco.com/videos_why_you_need_an_airshutoff_valve_video.asp
New electronic Speed Switch
March 2010
Chalwyn has added the Roda Deaco Rev Guard RGR-1S to its range of electronic control systems. This compact and durable speed switch has been well proven in the harsh Canadian climate. Offering both voltages and both speed input options in one product, with a simple test button and light for setting at two thirds of the desired cut off speed, this switch is compatible with Chalwyn energized-to-stop SVX valves.
For installation schematics please contact Chalwyn.
New distribution in Canada
March 2010
AMOT is pleased to announce that the Roda Deaco valve company is the new distribution outlet for Chalwyn in Canada. Based in Edmonton Alberta, this well established company has been supporting the oil and gas markets for supply and installation of manual and automatic engine shut off valves. The addition of Chalwyn brings an unmatched portfolio of products for the Canadian customers and the popular auto-manual D valves will be carried in stock.
The technically trained customer service team are available on (1) 780 465 4429.
New diesel engine safety brochure available on-line
February 2010
The newest Chalwyn Diesel Engine Safety Solutions brochure is available for on-line viewing or downloading.
Preventing potential ignition disasters from engines on any type of plant where combustible gas, vapours or dust may exist, the wide range of products featured includes air intake and fuel shutdown valves, overspeed protection, shutdown control systems, flameproof alternators and exhaust spark arrestors.
Flameproof diesel engine air shutoff for Group 1 hazardous areas
October 2009
A new flameproof Chalwyn SVX electrically operated air intake shutdown valve has been introduced by AMOT to provide failsafe diesel engine safety in underground mining or similar applications calling for Group 1 certification. This energised-to-run unit has a non-sparking zinc alloy body and solenoid cover that has passed the required safety tests.This failsafe valve helps to prevent potential explosions from diesel engine ignition on any type of mine or plant wherever there is a combustible gas, vapour or dust hazard.
Chalwyn SVX butterfly valves are offered in a wide range of models and can be flange or hose mounted with a combination of body sizes and hose adaptors to suit engine air intake diameters from 38 to 203mm (1½-8in).
Chalwyn welcomes new international distributors
May 2009
We are pleased to announce that Chalwyn Diesel Engine Safety products are now available through two new channel partners. For Mexico the Wilbur Eagle Company will add Chalwyn to their AMOT representation. For Trinidad and Tobago, the Rosco Petrovance Company will be supporting the local safety requirements of both offshore oil platforms and local refineries. For full details of these and other international distributors, please see distributors.
Chalwyn has moved to Suffolk UK
April 2009
Following the recent acquisition by AMOT, the manufacturing of Chalwyn products has been transferred to a larger facility at Bury St Edmunds. Also all administration and customer service support is now at this location.
For details and map please see contact us.
Chalwyn valves specified at South Hook LNG Terminal
December 2008
Milford Haven in South Wales has recently become an LNG (liquefied natural gas) import receiving terminal. The safety managers at the new South Hook project specified the fitment of Chalwyn D valves and spark arrestors on all their maintenance vehicles and diesel driven equipment operating within the perimeter. The LNG is produced in the Middle Eastern country of Qatar, where the production facilities of Qatar also specify the D valves as an essential safety upgrade for all types of diesel engines operating there.
FSX-200
supersedes FSX-100
October 2008
The fuel cut off valve FSX-100 will be phased out and replaced with a revised version called FSX-200. The new valve incorporates a magnetic internal latch design and is easier to reset manually by the pull action knob on top of the valve.
All connections points are identical with the FSX-100 allowing easy installation.
Full details of the latest range of fuel shut off valves can be seen in the website technical downloads pdf CE226.
High Output Addition to the range of Chalwyn flameproof alternators
September 2008
A new model, the ASX-400, has been added to the range of flameproof alternators available from Chalwyn.Designed to enable it to be fitted in the place of standard automotive style engine mounted alternator, the ASX-400 is certified Exd and meets ATEX requirements for Zone 1, Group IIb, T4 hazardous area application.In addition to an increased output of 24 volts / 50 amperes compared to the existing range of Chalwyn alternators, the ASX-400 is also designed to be suitable for multi-groove pulleys and has an adjustable mounting arrangement to assist fitting.
Full details can be seen in publication CE242.
Expansion
to range of Chalwyn diesel engine automatic intake shut down valves.
February 2008
A new valve, the D41, has been added to the “mini-range” of Chalwyn automatic over speed shut down valves. Suitable for diesel engines rated up to 27kW [36hp], the D41 is designed for a range of applications where the much larger D40 valve would previously have been specified. It is therefore particularly advantageous where space restrictions apply.For full specifications see Chalwyn publication CE209.
Also recently introduced, the D45-F3L and D51-F4L automatic intake shut
down valves have been specially developed for direct mounting to
the intake manifold of specific applications.
Powered by Deutz 1011 and 2011 engines. Again these valves have particular advantage where space is restricted.Full details are given in Chalwyn publication CE246.
hese new valves are all also available with the addition of manual shut down control.
Update to Chalwyn mini range automatic
shut down valves
August 2007
The D30B and D30BS air intake automatic over speed engine shut down valves have been superseded by new Chalwyn valve types D29 and D30. Major advantages of the new models include:[a]. Reduced Size.
The D29 and D30 are about 30% shorter in length and about 20% smaller on body diameter than the superseded models.[b]. Extended Tube End Size Range.
The new valves are available to suit any hose bore from 25mm. [1 inch] to 45mm. [1 3/4 inches] to suit diesel engines up to 24hp.
Full details are available in Chalwyn publication CE209.
Diesel engine alternators for Group I applications
July 2007
ATEX compliant Group I versions of the well established battery excited and self excited Chalwyn ASX-200, ASX-300 and ASX-310 Group IIB EExd alternators are now available for underground mining applications. The equivalent part codes for these new Group 1 products are ASX-220, ASX-320 and ASX-330 respectively. Rated outputs are the same as the equivalent Group IIB variants. For details on the ASX-220 & ASX-320 please see CE244.
The self excited version ASX-330 is shown in CE245.
Chalwyn release new range of temperature valves
March 2007
Following extensive development and testing, Chalwyn have extended their range of diesel engine safety products with the release of a new range of temperature valves.Chalwyn temperature valves are designed for incorporation into engine oil pressure or air pressure operated diesel engine automatic engine shut down systems and are suitable for zone 1 / zone 2 hazardous area applications.These valves when used in combination with other current Chalwyn products.
FSX fuel shut off valves allow a complete system to be built up to give automatic engine shut down on engine over speed [run away], high exhaust temperature, high coolant temperature or low oil pressure as well as a direct manual emergency shut down. Simpler systems, such as fuel shut off on high coolant temperature, can also easily be engineered. No electrical connections are involved.
Where certified hazardous area electrically operated automatic engine shut down systems are specified, the established Chalwyn Series 110, 111 and 210 products continue to be available.
New diesel engine automatic fuel shut down
valve from Chalwyn
February 2006
The long serving Chalwyn LUBE STOP valve was recently superseded by a completely new product. Like its predecessor this new valve, the LST-200, automatically stops the diesel fuel supply to an engine immediately on detection of loss of engine oil pressure, thereby avoiding potentially expensive downtime and repairs.
The new LST-200 now also features a simple manual control to latch the valve open following an emergency shut down should fuel system bleeding be required. Once the engine is running this manual latch is automatically released to regain full engine protection.
Chalwyn will also shortly be releasing a range of mechanical temperature valves. These can be used for example in conjunction with the LST-200 to extend its operation to automatically shut down fuel on high coolant temperature as well as on low oil pressure.
New Chalwyn electronic diesel engine safety system
May 2004
By combining a number of well-proven products with modern Control Units,
Chalwyn have launched a new range of electronically controlled safety shut
down systems for diesel engines. These are specifically designed for engines
operating in hazardous areas or other critical situations where emergency
automatic shut down of the engine air intake is part of the required specification.
In operation, these new systems shut down the engine by automatically
closing both the intake air and fuel valves on detection of low engine oil
pressure, high temperatures or engine overspeed. Additionally some variants
will respond to an input shut down signal from a gas detection or other
external system. Manual emergency shut down of the air intake valve is also
included.
An outstanding feature of this new product range is the ease of setting
the engine overspeed trip value with no special skills or knowledge required.
This is a simple push button operation carried out with the equipment fully
installed on the engine and no calculations / knowledge related to pulley
sizes / drive ratios is required. For security, this push button is designed
to be tamper proof when trip speed setting or checking is not in progress.
All hazardous area versions are certified in accordance with the ATEX
Directive for Zone 1, Group IIB, T4 applications and are suitable for engines
meeting the requirements of EN1843-1:2000. Lower cost and more compact uncertified
versions are also available where added engine safety is required for non
hazardous area applications.
