derwent james safety equipment & consultancy

Providing outstanding safety equipment, consultancy and expertise for your company.
Because safety is a necessity, not a commodity

Tel: 01332 673700 Mobile: 07968 512311 Email:

machine guarding and valve interlocks

Chemical Industry Safety Products

Hazardous Chemical Sampling Systems

We are proud to be the exclusive UK agent for Dopak sampling systems, the expert suppliers of hazardous chemical sampling systems. Dopak sampling systems for hazardous chemicals improve safety and reduce spills because they use the patented Dopak needle assembly – feel free to contact us and we’ll tell you the nitty gritty about it.

Sampling systems from Dopak for hazardous chemicals are installed worldwide in all sectors of the process industry and these can be installed to a pipeline or to a tank. With a Dopak sampling system you can take a hazardous sample safely and cleanly with no spills using our septum sealed sample bottles.

There are many types of Dopak Sampling Systems available. All systems can be tailored to your company’s needs, so contact us at Derwent James Ltd and use our experience and expertise to help you quickly select the correct sampling system or visit the Dopak website to download datasheets, brochures and to see videos of all Dopak systems.

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Lockout Tagout Equipment

Why does your company need outstanding lockout tagout equipment? Well, to safely isolate the machinery at your workplace you will require this equipment. We have an extensive range available, so we’ve got the solution, design and process that’s right for your company – and if not, we will be happy to point you in the right direction for further help and support.

Most of the superb products we provide (along with our support) are available on short delivery times, and many can often be shipped next day – and additionally all our products are competitively priced so you’re sure to get a competitive quotation!

And don’t forget, as well as lockout tagout equipment that is right for your company, we offer the consultancy and technical support you need, too. Because you’re never on your own when it comes to company safety with Derwent James Ltd.

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Machine guarding and Valve Interlocks

An interlock is a relatively simple solution that can vastly improve the safety on critical installations and our mechanical valve interlocks safely lock all sizes and types of installed valves.  Our standard interlocks are available to fit your existing valves and are used for many applications. Some additional examples include; locking enclosures, control panels, and even machinery access gates.

Using our interlocks improves safety across your site and in addition will also ensure critical valves are not operated incorrectly or by unauthorised staff. It will also ensure valves and other critical equipment are only operated when they should be. So, please call us today for further information.

We’d love for you to contact us to discuss your mechanical valve interlock and on-site safety solution needs.

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Lightning warning system

The BTD-200 lightning warning system is a complete detection and warning system
which has been developed from the Biral range of professional aviation grade lightning
detection systems. Its proven detection technology reliably detects the presence of
all forms of lightning out to a range of 22 miles from the sensor. Designed
to be quickly and easily installed, it comes complete with a universal mains voltage
power supply and the essential PC server application Lightning Works for monitoring,
warning and data logging of approaching thunderstorms.

The BTD-200 is an ideal upgrade for users of field-mills in the process sector. Reliable thunderstorm detection allows chemical process operations to take the appropriate safety precautions in a timely manner and only when necessary. Once the storm threat has passed, normal operations can be resumed quickly and safely, so protecting plant and life whilst maximising operating efficiencies.

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As this is a new product for us we would be very interested to hear from you with any stories you have related to lightning strikes in the process sector and how it affected your site.


Let Derwent James Ltd provide outstanding safety equipment, consultancy and expertise for your company. Please get in touch with us at:

Tel: 01332 673700 - Mobile: 07968 512311 - Email:

Providing outstanding safety equipment, consultancy and expertise for your company.
Because safety is a necessity, not a commodity

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