




Truma Push Fit Boiler Drain Valve 12mm
The Truma Push Fit Boiler Drain Valve 12mm (Part No. 70142-05) is an essential component for safely and efficiently draining water from Truma Ultrastore and Combi water heaters in caravans and motorhomes. This valve facilitates the removal of residual water, preventing potential damage from freezing temperatures and ensuring the longevity of your water heating system.
🔧 Key Features
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Compatibility: Designed for use with Truma Ultrastore and Combi water heaters, including models like 2E, 4E, and 6DE.
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Connection Type: Equipped with 12mm push-fit (John Guest) connectors, allowing for quick and secure installation with semi-rigid piping.
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Pressure Rating: Operates at a maximum pressure of 2.8 bar, suitable for standard caravan and motorhome water systems.
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Drainage Mechanism: Features a yellow on/off lever that, when opened, allows for the complete drainage of the water heater, reducing the risk of frost damage during colder months.
🛠️ Installation Overview
Installing the Truma Push Fit Boiler Drain Valve is straightforward:
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Preparation: Ensure the water heater is turned off and the system is depressurized.
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Disconnection: Remove the existing drain valve if present.
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Installation: Insert the 12mm push-fit connectors of the new valve into the corresponding semi-rigid pipes until they click into place.
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Testing: Open the yellow lever to verify that the valve drains water effectively.
For a visual guide on replacing the drain valve, you can refer to the following video:
✅ Final Thoughts
The Truma Push Fit Boiler Drain Valve 12mm is a reliable and easy-to-install solution for maintaining your water heating system. Its compatibility with Truma Ultrastore and Combi models, combined with the convenience of push-fit connectors, makes it a practical choice for caravan and motorhome owners. Regular use of this valve to drain your water heater can help prevent damage from freezing and ensure the efficient operation of your system.
Couldn't load pickup availability
Pickup available at SouthWest Motorhomes - Sales, Hire & Service Ltd
Usually ready in 4 hoursPairs well with
Free shipping on orders over £100 (exclusions apply)
All items come with full manufacturer guarantees for quality and performance
Shipping & Returns
Shipping Policy
We aim to dispatch orders within 2 working days and are shipped via Royal Mail or FedEx with tracking and drop-off without signature.
We offer FREE delivery on all orders over £100 (not including bespoke orders placed as part of our Part Finder service or products shipped directly from the supplier).
Returns Policy
If you're not completely satisfied with your order, you can return it to us within 14 days of receipt via Royal Mail. Though please note that we charge £3 for returns that are not faulty and the £3 will be deducted from your refund. Only damaged parts will have a full refund and return postage paid for.
Q&A
Delivery & Returns
How much do you charge for shipping?
Shipping is free on orders over £100
For orders under £100 there is a £5.99 shipping charge
For all next day orders there is a £9.99 shipping charge
Please note, these charges exclude bespoke parts. Bespoke orders will have their own shipping charge, quoted when ordering
To view all our Shipping information, click here.
Do you offer a click and collect service?
Yes, if the part you want is in stock at our warehouse, you can collect it from us for free. Your part will usually be ready for collection within 4 hours.
If you wish to collect your parts, place an order on the website and select the 'Pick Up' delivery option in the checkout.
Our pick up address:
Southwest Leisure Spares
Unit 1 Southfields Enterprise Park
Jordans Road
Ilminster
Somerset
TA19 9FF
United Kingdom
Where is my order?
Orders are generally dispatched within 2 days. Our standard shipping is a 48 hour tracked service via Royal Mail or FedEx.
Please refer to your tracking information for the most up to date status of your order. This information will be emailed to you. Please allow 2 days after your order is dispatched to arrive.
Some items may take longer than 48 hours to be delivered due to being sent direct from the supplier. If this is the case, you will be informed when placing your order.
For next day delivery, your order must be placed before 2pm Monday - Thursday. Unfortunately we do not offer next day delivery on a Saturday. If you place your order after 2pm on Thursday, your order will be delivered on Monday.
Can I return my order?
If you're not completely satisfied with your order, you can return it to us within 14 days of receipt via Royal Mail. Though please note that we charge £3 for returns that are not faulty and the £3 will be deducted from your refund.
Please check your part for damages as soon as you receive it. All goods retuned must be in new condition without any damages unless stated otherwise and must be fit for resale.
Bespoke orders cannot be cancelled or refunded once ordered, as these parts are being made to order and have to be paid for.
You can get your Royal Mail returns label here
To view our full returns and refund policy, click here
Do you ship internationally?
Unfortunately we don't ship internationally. We currently ship within the United Kingdom, Isle of Man, Jersey and Guernsey
What does it mean when a product is shipped directly from the supplier?
This means that the stock is not sent from our warehouse. Instead it is sent directly from the supplier to you. We will always let you know this before you complete your purchase and what the delivery time is.
Parts
Are the parts you sell genuine / original?
Yes, we supply genuine spare parts directly from manufacturers so you can be confident you're getting the best quality parts.
I can't find the part I need, can you help?
If you cannot find the part you require on our website, our team can help you with this. By filling out our Part Finder form with as much information as possible including the vehicle chassis number, we will help find exactly what you need.
Can you fit the parts for me?
We have an NCC Approved Workshop in Ilminster, Somerset where we can fit parts for your Motorhome. Send a booking enquiry here
General
What do you sell?
At South West Leisure Spares we specialise in parts, spares and accessories for motorhomes, caravans, campervans and camping. We have thousands of parts in stock and knowledgeable staff to give you a hand if you are not sure what you are looking for.
We are parts specialists for the following motorhome brands, Sunlight, Dethleffs, Roller Team, Auto Trail, Auto Sleeper, Coachman, Swift McLouis and Malibu Motorhomes.
Where are you located?
If you are heading off on holiday or journeying home along the A303, we are easy to spot next to the Southfields Roundabout at Ilminster. From the roundabout take the Exeter (A303) exit and immediately enter the slip road on the left and follow the road round to our ample parking space. We are just next to the COSTA Coffee restaurant.
Southwest Leisure Spares
Unit 1 Southfields Enterprise Park
Jordans Road
Ilminster
Somerset
TA19 9FF
United Kingdom

Truma Push Fit Boiler Drain Valve 12mm
Can't find what part you need?
It can be daunting and frustrating when you can't find the part you need. Use our Part Finder service and let us do the work for you.

Fitting available at our NCC Approved Workshop
We supply genuine spare parts sourced directly from leading manufacturers, serving the caravan, motorhome, holiday park, leisure, and marine industries. Our close links with manufacturer technical teams give us access to hundreds of detailed diagrams, technical resources, and parts lists—ensuring you get the right component every time.
If your part requires professional fitting, our NCC Approved Workshop in Ilminster, Somerset is fully equipped to help. Simply get in touch to book an installation appointment, and our experienced technicians will ensure your parts are fitted safely, correctly, and in line with manufacturer specifications.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Free shipping
Free shipping on orders over £100. Dispatched within 2 days.
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Help is on hand
We are here to assist you with any queries you may have about any product.
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Drop us a message if you need further assisatance

