RM Stelflow 300L High Gain Indirect Cylinder - TRSMVH-0300LFC
Shipping time: 2–7 days
Please call us for precise delivery dates.
Description
The RM Stelflow 300L High Gain Indirect Cylinder (TRSMVH-0300LFC) is a robust indirect hot water cylinder designed to deliver large, reliable hot water stores for domestic and light-commercial systems. It pairs with external boilers or heat sources via a high-performance stainless-steel coil to provide efficient heat transfer and consistent hot water delivery. Built with strong insulation and corrosion-resistant materials, it’s suitable for homes, multi-bathroom properties and small commercial installations seeking lower heat loss and long-term reliability.
Key Features
- 269 L actual hot water capacity — ample usable volume for family or multi-point use
- High-gain indirect design compatible with boilers, heat pumps and central heating systems
- Single 316L stainless-steel coil (25.4 kW rating, 2.5 m² surface) for efficient heat exchange
- LDX 2101 stainless-steel cylinder for corrosion resistance and extended service life
- Dense PU foam insulation (50 mm) with coated mild steel outer casing to minimise standby losses
- Low heat loss (2.04 kWh/24h) for improved energy efficiency and reduced running costs
- Safety tested to BS EN 12897:2016 and safety valve rated to 90 °C
- High-pressure capability: max mains 10 bar, operating pressure 7 bar (coil max primary 6 bar)
- Single immersion port (immersion spec 3) and one heat exchanger for simplified installation
- 25-year warranty for long-term peace of mind
Ideal Use Cases
- Larger residential homes or family properties with high hot water demand
- Multi-bathroom homes, apartments or properties with simultaneous draws
- Small commercial sites, staff facilities or hospitality back-of-house applications
- Integration with external boilers or heat pumps as an indirect cylinder in central heating systems
- Renovation projects replacing older cylinders for better insulation and capacity
- Kitchens, bathrooms and utility areas requiring dependable hot water performance
Product Specifications
| Specification | Value |
|---|---|
| Product model | RM Stelflow 300L High Gain Indirect Cylinder (TRSMVH-0300LFC) |
| Actual capacity (Ltr) | 269 |
| Unit weight empty (kg) | 61.6 |
| Unit weight full (kg) | 331 |
| No immersions | 1 |
| Immersion spec | 3 |
| No heat exchangers | 1 |
| Coil 1 rating (kW) | 25.4 |
| Coil 1 surface area (m²) | 2.5 |
| Coil 1 max prim pressure (Bar) | 6 |
| Coil 1 resistance (Bar) | 0.08 |
| Max mains water pressure (Bar) | 10 |
| Operating pressure (Bar) | 7 |
| Operating temp (°C) | 60 |
| Safety valve temp (°C) | 90 |
| Thermal insulation | Dense PU foam |
| Foam thickness (mm) | 50 |
| Cylinder material | LDX 2101 |
| Outer casing | Coated mild steel |
| Coil material | 316L stainless steel |
| Heat loss (kWh/24h) | 2.04 |
| Tested to standard | BS EN 12897:2016 |
| Warranty terms (Year) | 25Y |
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.
