Joule - Stainless Steel Unvented Cylinder - 90L Stelflow Direct
Shipping time: 2–7 days
Please call us for precise delivery dates.
Get Free Delivery on Orders Over £60
For more details, please refer to our Shipping Information.
Description
The Joule Stainless Steel Unvented Cylinder — 90L Stelflow Direct is a compact direct unvented hot water cylinder designed to supply reliable domestic hot water where space is limited. Constructed from corrosion‑resistant LDX 2101 with a coated mild steel outer casing and 50 mm dense PU foam insulation, it delivers efficient heat retention and straightforward electric immersion boosting. Suited to small homes, flats or secondary outlets requiring a compact, durable stored‑hot‑water solution.
Key Features
- Capacity: 90 litres actual capacity
- Construction: LDX 2101 stainless‑grade cylinder with coated mild steel outer casing
- Insulation: 50 mm dense PU foam for low heat loss (0.96 kWh/24h)
- Direct (single‑stat) electric configuration for immersion heating (3 kW @ 230 V)
- Immersion sleeves: 1 (single immersion)
- Pressures: max mains water pressure 10 bar; operating pressure 7 bar
- Safety: safety temperature 90 °C; tested to BS EN 50440:2015
- Weight: empty 21 kg; full 111 kg
- Warranty: 25‑year warranty
Ideal Use Cases
- Small domestic properties, flats or annexes where compact hot water storage is needed
- Direct electric boosting scenarios (single immersion) or properties without a primary heating circuit
- En‑suite bathrooms, kitchens or single‑bath households with modest hot water demand
- Installations with limited vertical space that favour horizontal or compact footprint cylinders
Product Specifications Table
| Specification | Details |
|---|---|
| Product | Joule Stainless Steel Unvented Cylinder — Stelflow Direct |
| Model / Type | 90 L direct |
| Actual capacity (L) | 90 |
| Cylinder material | LDX 2101 |
| Outer casing | Coated mild steel |
| Thermal insulation | Dense PU foam |
| Foam thickness (mm) | 50 |
| Heat loss (kWh/24h) | 0.96 |
| No immersions | 1 |
| Immersion specification | 3 kW @ 230 V |
| Immersion configuration | Direct (single stat) |
| Max mains water pressure (bar) | 10 |
| Operating pressure (bar) | 7 |
| Safety temperature (°C) | 90 |
| Tested to standard | BS EN 50440:2015 |
| Unit weight empty (kg) | 21 |
| Unit weight full (kg) | 111 |
| Warranty (years) | 25 |
Shipping Information
At GetPlumb, we strive to provide reliable and cost-effective delivery options to our customers. Please review our shipping policy below.
🆓 Free Local Delivery (Orders £60 & above)
We offer FREE delivery on orders £60 or more for selected local areas.
Eligible Postcodes Include:
- RG*
- SL*
- OX10*, OX11*, OX49*
- HP1*, HP3*, HP8*, HP9*, HP10*, HP11*, HP12*, HP13*, HP14*
- WD*, HA*, UB*, TW*, KT*
- W1* – W9*
- NW*, SW*
Delivery Time: 2–4 working days
Shipping Cost: £0.00
📦 Standard Shipping (Weight-Based Rates)
For orders that do not qualify for free delivery, standard shipping rates apply based on total cart weight.
- For cart weight between 0–5 kg, the shipping cost is £2.99 with a delivery time of 2–4 working days.
- For cart weight between 5–25 kg, the shipping cost is £7.99 with a delivery time of 2–4 working days.
- For cart weight between 26–40 kg, the shipping cost is £15.98 with a delivery time of 2–4 working days.
- For cart weight of 41 kg and above, the shipping cost is £31.96 with a delivery time of 2–4 working days.
🧱 Block Salt (Harvey’s) – Unit-Based
Shipping
This rate applies only to Harvey’s block salt products.
- £7.99 is charged for every 3 items.
- The charge increases by £7.99 for each additional set of 3 items.
Examples:
- 1–3 items → £7.99
- 4–6 items → £15.98
- 7–9 items → £23.97
Delivery Time: 2–4 working days
📏 Large / Long Items (Length-Based Shipping)
For oversized items where the product length is 1.5 metres or more:
Conditions:
- Product length ≥ 1.5 m
- Cart weight ≤ 40 kg
Shipping Cost: £18.00 (flat rate)
Delivery Time: 2–4 working days
Collection from Store
Customers can also choose to collect their order from our store in
Reading, UK, at no additional charge.
For any questions regarding shipping, please contact our support team at online@getplumb.co.uk.
