✅ What it actually fits

It fits any heating system or boiler that uses a 130mm circulation pump with 15-50 or 15-60 spec.

✔️ Typical compatibility

• Open vent systems
• Sealed systems
• S-plan / Y-plan setups
• Underfloor heating circuits
• Hot water cylinders

👉 It’s a system pump, usually external to the boiler.

🔥 Common boiler brands it’s used with

This type of pump is commonly found alongside:

• Worcester Bosch
• Vaillant
• Ideal
• Baxi
• Glow-worm
• Vokera

👉 Especially on older systems with external pumps (not modern combis with internal pumps).

🔄 Direct replacements / upgrades

Modern equivalents that replace it directly:

• Grundfos UPS3 15-50/65 130 → direct upgrade
• Grundfos UPS2 Replacement Pump → newer efficient version
• Wilo Yonos Pico Circulating Pump → alternative brand

👉 These are like-for-like replacements (same 130mm length & connections).

📏 What the numbers mean

• 15 → pipe size (15mm/1”)
• 50 / 65 → pump head (5–6.5 metres)
• 130 → pump length (very important for fit)

✔️ As long as those match → it fits your system

🧠 Key takeaway

• ❌ Not tied to specific boiler models
• ✅ Fits any system using a 130mm heating pump
• ✅ Widely used across UK domestic heating systems

⚠️ Quick check before buying

Make sure:

• Pump length = 130mm
• Same pipe connections
• Same or higher head (15-50 → 15-60 is OK upgrade)

✅ Bottom line

👉 15-50/65 130 = universal heating pump size
👉 Fits hundreds of systems, not a fixed model list