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Altecnic Reflex Vertical Expansion Vessels For Potable Water

  • £19.57 Ex. VAT
Free Delivery Orders over £60 Unless Marked
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Please Click forData Sheet In a closed hot water circuit, the water cannot be compressed so any increase in volume, created by an increase in temperature, has to be accommodated by an expansion vessel.

When water is cold, the pre-charge pressure forces the bladder to collapse until the pump is started when the bladder starts to inflate. As the temperature in the system increases, with the associated increase in pressure and volume, the expanded water enters the bladder creating additional volume and lowering the pressure.

When the temperature decreases, the pre-charge pressure forces the water from the bladder and back into the main water circuit.

10 bar max pressure 


**Please note larger vessels 3-4 days delivery**

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Delivery Policy

Standard orders under £50 plus vat will incur a postage and packaging charge of £6 plus VAT for delivery within our UK Mainland delivery areas.

We offer a free delivery service on most orders over £50.00 plus vat* (Monday to Friday)

*Further delivery charges may apply for standard parcels being delivered to remote locations and offshore islands, these locations include/but are not restricted to UK Highlands and Islands, UK Non Mainland, Isle of Wight and Northern Ireland. Please refer to the checkout page for a list of affected postcodes.

JTM Plumbing is happy to offer a next working day delivery service for all parcels being sent providing the items are in stock. 95% of our parcels which are ordered by 3pm are dispatched via Courier for delivery the following working day. Certain outlying areas may take longer to arrive due to courier restrictions/timescales. 

Please call for prices regarding Long length to remote UK and all international orders prior to placing your order so we can advise on excess charges.


As we use 3rd party delivery agents JTM Plumbing we cannot guarantee that all deliveries will be the next working day. JTM will not be liable for any loss of income, loss of profits, loss of markets, loss of reputation, loss of customers, loss of use, loss of an opportunity even if we had knowledge that such damages or loss might arise or for any indirect, incidental, special or consequential damages or loss howsoever arising. 

If you need any more information regarding stock, postal charges, dispatch time or timed delivery options and cost please call us directly on 01325 488588 or email

Returns Policy

Your Right of Cancellation 

You have the right to cancel the contract at any time up to 14 days after you receive the goods under the Consumer Contracts Regulations. Please note that this policy has some limitations which are detailed below and does not apply to business customers. 

To exercise your right of cancellation you must give written notice to JTM Plumbing either via hand, post or email. Notification by telephone is not sufficient. 

Except in the case of faulty or misdescribed goods, if you exercise your right of cancellation after the goods have been delivered to you, you will be responsible for returning the goods to JTM Plumbing at your own cost. The goods must be returned to the address as shown on the returns form. You must take reasonable care to ensure the goods are not damaged or the box defaced in any way in the meantime or whilst in transit. In the case of faulty or misdescribed goods JTM Plumbing shall, after receiving notification, either collect the goods from you or ask you to return the goods at an agreed cost which JTM Plumbing will pay for. 

Once you have notified JTM Plumbing that you are cancelling the contract, JTM Plumbing will refund or re-credit you within 30 days for any sum that has been paid by you or debited from your credit card for the goods. If you have paid for excess postage charges for special deliveries these will not be refunded only our standard delivery cost if this was paid as an addition. 

Except in the case of faulty or misdescribed goods, if you do not return the goods as required, JTM Plumbing may charge you a sum not exceeding the direct costs of recovering the goods. 

You do not have the right to cancel the contract if the order is for consumable goods which, by their nature, cannot be returned, save where a fault is discovered which could not have been discovered otherwise than by unsealing the goods. 

If you are due a delivery you no longer require, but the goods are already with our courier and you refuse the delivery, a deduction of £6.00 will be made from your overall refund once the item is back with JTM Plumbing. This is due to our couriers charging a refusal charge.



We know that you will be pleased with your purchases from JTM Plumbing. However, there may be occasions when you will need to return items to us. 

In all instances of a return, please contact us first. You must receive a "Return Order Number" 


Items Damaged in Transit 

If any standard items were damaged in transit, we ask that you report it to us within 7 working days (please note that this is 48 hours for our business customers). If the items are visibly damaged on receipt, simply refuse the delivery. Items should be returned in their original packaging complete with all accessories and documentation. Once received back into our warehouse, we'll issue a replacement or full refund to you via your original payment method and reimburse your reasonable return carriage costs. 

Items Faulty on Arrival 

If your items are faulty on arrival, you have 28 calendar days in which to inform us of the fault (please note that for our business customers, this is 14 calendar days). Items should be returned in their original packaging complete with all accessories and documentation. Once we have verified the fault, we'll issue a replacement or full refund to you via your original payment method and reimburse your reasonable return carriage costs. We test returned items, and if a returned item is found not to be faulty by our technicians we will return the item to you, in this instance you will be liable for the return carriage. 


Items Faulty in Warranty Period 

If any of your purchases develop a fault, and it's more than 28 calendar days since receipt, then provided your item is within its warranty period, you are entitled to a warranty repair. In some cases, manufacturers provide a specialist full on-site service and/or telephone help facilities for your convenience which we recommend you use in order to correct the fault quickly. For business customers all warranty repairs after 28 days of receipt are referred directly to the manufacturer (unless otherwise stated) 


If you Change your Mind 

If you have simply changed your mind about any item ordered and you wish to return it, then in line with the Consumer Contracts Regulations you can do so provided you inform us of your decision within 14 days of receipt. The item must not be used and must be 'as new' when returned to us. Once you've informed us that you wish to return goods under the Consumer Contracts Regulations, you have a further 14 calendar days from the point of advising JTM to do so, at your own expense from the point of delivery. Once the item is received at JTM Plumbing, we'll issue a full refund for the product to your original payment method. Please note this policy has some limitations and does not apply to business customers(an example of which is items which are made to order). If you paid a standard delivery charge (for orders under £50) then this will also be refunded however we would not refund any non standard charges that you may have requested (e.g Timed deliveries)

If you wish to return any items outside of the standard Consumer Contracts Regulations then please contact JTM for details. Outside of this timescale we may have restocking charges that would be applied. Standard postage charges would not be refunded at this point.

Returns Address:

JTM Plumbing Ltd

Unit 1 Hannah Court Business Park

Faverdale North



Contact us for our Payment & Security policy

Product Information Model 1+ Quantity Qty
PV2W Altecnic: 2Lt Potable Vessel PV2W 1+ £20.17 Ex. VAT
PV2W £20.17 Ex. VAT
PV8W Altecnic: 8Lt Potable Vessel PV8W 1+ £19.57 Ex. VAT
PV8W £19.57 Ex. VAT
PV12W Altecnic: 12Lt Potable Vessel PV12W 1+ £21.77 Ex. VAT
PV12W £21.77 Ex. VAT
PV18W Altecnic: 18Lt Potable Vessel PV18W 1+ £26.33 Ex. VAT
PV18W £26.33 Ex. VAT
PV25W Altecnic: 25Lt Potable Vessel PV25W 1+ £51.20 Ex. VAT
PV25W £51.20 Ex. VAT
PV33W Altecnic: 33Lt Potable Vessel with built-in bkt PV33W 1+ £88.45 Ex. VAT
PV33W £88.45 Ex. VAT
PV50W Altecnic: 50Lt Potable Vessel with legs PV50W 1+ £119.77 Ex. VAT
PV50W £119.77 Ex. VAT
PV60W Altecnic: 60Lt Potable Vessel with legs PV60W 1+ £115.50 Ex. VAT
PV60W £115.50 Ex. VAT Out of stock | Please Contact Office To Order - 01325 488588 | Email me when back in stock
PV80W Altecnic: 80Lt Potable Vessel with legs PV80W 1+ £203.06 Ex. VAT
PV80W £203.06 Ex. VAT
PV100W** Altecnic: 100Lt Potable Vessel with legs PV100W 1+ £247.03 Ex. VAT
PV100W** £247.03 Ex. VAT
PV140W** Altecnic: 140Lt Potable Vessel with legs PV140W 1+ £317.14 Ex. VAT
PV140W** £317.14 Ex. VAT
PV200W** Altecnic: 200Lt Potable Vessel with legs PV200W 1+ £408.86 Ex. VAT
PV200W** £408.86 Ex. VAT
PV300W** Altecnic: 300Lt Potable Vessel with legs PV300W 1+ £503.07 Ex. VAT
PV300W** £503.07 Ex. VAT
PV400W** Altecnic: 400Lt Potable Vessel with legs PV400W 1+ £633.26 Ex. VAT
PV400W** £633.26 Ex. VAT
PV500W** Altecnic: 500Lt Potable Vessel with legs PV500W 1+ £843.54 Ex. VAT
PV500W** £843.54 Ex. VAT
PV600W** Altecnic: 600Lt Potable Vessel with legs PV600W 1+ £1,281.19 Ex. VAT
PV600W** £1,281.19 Ex. VAT
PV800W** Altecnic: 800Lt Potable Vessel with legs PV800W 1+ £1,458.05 Ex. VAT
PV800W** £1,458.05 Ex. VAT
PV1000W** Altecnic: 1000Lt Potable Vessel with legs PV1000W 1+ £2,642.68 Ex. VAT
PV1000W** £2,642.68 Ex. VAT
Total: £0.00 Ex. VAT