Browse store

RM Prostel Unvented Indirect Cylinder 250 Litre (78719)

Unvented, with excellent mains pressure flow rates. Includes comprehensive controls and fixing kit.

  • Stainless Steel Tank
  • 25 Year Manufacturer's Guarantee (T&Cs Apply)
  • Fast Re-Heat & Recovery
  • High Value Insulation
  • Includes 22mm Compression Connections

More Info

£609.99INC VAT

Add to basket for...

Not available to Click & Collect

Store Collection Unavailable

Add to saved list...


does kit include pressure reduce/balance valve?

Asked by: bobless
Answered by: RM Cylinders Expert
Date published: 2017-04-22

Is the bar pressure of the unvented cylinder the pressure that I can expect from my showers?

What is the best way to get 3 powerful showers? Currently have 1 shower with 2.5 bar pump. I need to update the other bath rooms. Pressurised system or more pumps?
Asked by: Vivbrook
an Un vented (Pressurised) Cylinder will only take what is coming down the incoming mains, store, heat and disperse at that pressure/flow rate. Unvented cylinders do not generate increased pressure flow rate.
Answered by: RM Cylinders Expert
Date published: 2017-04-01

Does this cylinder need an expansion vessel?

Asked by: MTNT
Yes, all unvented Cylinders are supplied with a suitable expansion vessel.
Answered by: RM Cylinders Expert
Date published: 2017-01-01

Is a motorised valve included with the accessories?

Asked by: nodstar
Hi There is one 2 port valve included
Answered by: RM Cylinders Expert
Date published: 2016-10-15

Hello Can i link 3 nos.PROSTEL UNVENTED INDIRECT CYLINDER 250 LITRE (78719) to my solar water heating system

Asked by: nigb
Morning, you would be best speaking to our solar engineer, his name is Colin he can be contacted on 07808 788723 Regards
Answered by: RM Cylinders Expert
Date published: 2016-09-10
  • y_2017, m_8, d_18, h_4CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_5
  • loc_en_GB, sid_78719, prod, sort_[SortEntry(order=LOCALE, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_screwfix
Bar Pressure 3 bar
Brand RM Cylinders
Connection Type 22mm Compression
Direct/Indirect Indirect
Insulation Type High Value Insulation
Manufacturer Guarantee 25 Year Manufacturer's Guarantee (T&Cs Apply)
Model Name/No Prostel
Pack Size 1
Pieces in Pack/Case 1
Product Diameter 545 mm
Product Height 1728 mm
Product Type Unvented Cylinder
Tank Capacity 250 Ltr

Tested to 15bar.

Product contents

Unvented hot water cylinder and unvented kit.

*Delivered direct from our suppliers in the number of working days stated on the delivery button