--- product_id: 314905299 title: "Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++]" brand: "hanicks" price: "8136119₫" currency: VND in_stock: true url: https://www.desertcart.vn/products/314905299-potterton-5114691-8l-expansion-vessel-fits-gold-heatmax-promax-titanium store_origin: VN region: Vietnam --- # Compact 43.8x25x8.5 cm 3 bar max pressure rating 8L capacity precision fit Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++] **Brand:** hanicks **Price:** 8136119₫ **Availability:** ✅ In Stock ## Summary > 🔥 Upgrade your boiler’s heart with precision pressure control! 🛠️ ## Quick Answers - **What is this?** Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++] by hanicks - **How much does it cost?** 8136119₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/314905299-potterton-5114691-8l-expansion-vessel-fits-gold-heatmax-promax-titanium) ## Best For - hanicks enthusiasts ## Why This Product - Trusted hanicks brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Durable Design:** Robust metal vessel weighing just 4.5 kg with a sleek rectangular profile for easy installation. - • **Optimal Pressure Management:** Pre-charged at ~0.5 bar to cushion pressure spikes and reduce PRV discharge, safeguarding your system. - • **Energy Class A+++ Efficiency:** Supports high-efficiency boilers, enhancing system longevity and performance. - • **Seamless Potterton Compatibility:** Tailored for Gold, Heatmax, Promax & Titanium boilers—match your GC & serial for perfect fit. - • **Professional Installation Required:** Gas Safe registered engineer ensures precise pre-charge setting and system commissioning. ## Overview The Potterton 5114691 8L Expansion Vessel is a high-quality, metal pressure vessel designed for select Potterton combi and system boilers. Pre-charged at ~0.5 bar and rated for up to 3 bar pressure, it effectively cushions pressure fluctuations in sealed central heating systems up to 125L volume. Compact and lightweight, it requires professional Gas Safe installation to ensure optimal performance and system safety. Compatible with multiple Potterton models, it supports energy-efficient boiler operation with an A+++ rating. ## Description Product description The 5114691 8-litre expansion vessel is used across popular Potterton Gold / Promax / Titanium / Heatmax / Apollo ranges to cushion pressure rise in sealed CH systems and reduce unwanted PRV discharge. Manufacturer manuals specify a ~0.5 bar vessel pre-charge and suitability up to ~125 L system volume (additional vessel required above this). After fitting, isolate, set pre-charge per the appliance manual, and complete safety/commissioning checks. Selected Potterton Compatibility (match model + GC):Apollo 25 — GC 47-393-38. Gold Combi 24/28/33 HE — GC 47-590-05 / 47-590-06 / 47-590-19; Gold 24/28 HE A Combi (serial notes BMX0815/GNH0815 & BNF0932/GNK0932). Gold Combi ErP 24/28/33 — GC 47-393-43 / -44 / -46 with AC/BC/CC/DC/EC serial suffix variants. Gold System ErP 18/24/28 — GC 41-592-39 / -40 / -41 with suffix variants. Heatmax Combi 24/28 HE — GC 47-393-27 / -28. Promax Combi HE Plus / HE Plus A (incl. LPG variants) — multiple GC refs (24/28/33). Promax Combi ErP 24/28/33 — GC 47-393-47 / -48 / -49 with AC/BC/CC/DC/EC suffix variants. Promax System ErP 12/15/18/24/32 — GC 41-592-42 / -43 / -44 / -45 / -46 with suffix variants. Titanium 24/28 — GC 47-393-39 / -40; Titanium Combi ErP 24/28/33/40 with suffix variants (47-393-50…53). The above are the most-requested Potterton fits for 5114691; check your exact GC and serial suffix.Technical DetailsCapacity: 8 L (internal appliance vessel). Typical vessel pre-charge / sizing (manuals): ~0.5 bar; up to ~125 L system volume; PRV 3 bar. Item dimensions (approx.): 438 × 250 × 85 mm; Item weight ~4.5 kg. Boxed (typical for shipping): ~400 × 300 × 200 mm; ~6.0 kg. Common companion (not included): PRV 248056. What’s in the Box1× 8-L expansion vessel – 5114691 (mounting/seals as per boiler design; service parts like PRV are separate). Legal Disclaimer Must be installed by a qualified gas safe registered engineer. ## Features - 8-litre internal expansion vessel for selected Potterton Combi and System boilers. Part: 5114691. - Pre-charge & sizing (per manuals): vessel pre-charged ~0.5 bar; suitable up to ~125 L system volume (add extra vessel above this). PRV typically 3 bar. Installer must set per the specific boiler manual. - Confirmed Potterton coverage with GC numbers & serial suffixes listed below to cut returns—match model + GC (and suffix where shown) before ordering. - Often paired at service with PRV 248056 (not included unless your pack states otherwise). - Trade install: fit/commission by a competent (Gas Safe) engineer; re-set vessel pre-charge and verify system cold-fill pressure. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Hanicks | | Part Number | 5114691 | | Product Dimensions | 43.8 x 25 x 8.5 cm; 4.5 kg | | Item model number | 5114691 | | Size | 8 Litre | | Colour | Red | | Style | 5114691 Expansion Vessel | | Finish | Red | | Material | Metal | | Shape | Rectangular | | Installation method | By heating engineer | | Item Package Quantity | 1 | | Number of Pieces | 1 | | Maximum Pressure | 3 Bars | | Capacity description | 8 | | Number Of Holes | 1 | | Usage | Indoor | | Included Components | 1x 5114691 Expansion Vessel | | Item Weight | 4.5 kg | ## Images ![Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++] - Image 1](https://m.media-amazon.com/images/I/61h8Utt96tL.jpg) ![Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++] - Image 2](https://m.media-amazon.com/images/I/61PQ9Sqde8L.jpg) ![Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++] - Image 3](https://m.media-amazon.com/images/I/61iJ6q5cDVL.jpg) ![Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++] - Image 4](https://m.media-amazon.com/images/I/61PmarL71eL.jpg) ![Potterton 5114691 8L Expansion Vessel, Fits Gold/Heatmax/Promax/Titanium 15 18 24 28 32 kW (Replaces CIMM RP250) - Hanicks [Energy Class A+++] - Image 5](https://m.media-amazon.com/images/I/71PWpHTZXtL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/314905299-potterton-5114691-8l-expansion-vessel-fits-gold-heatmax-promax-titanium](https://www.desertcart.vn/products/314905299-potterton-5114691-8l-expansion-vessel-fits-gold-heatmax-promax-titanium) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-04*