Bastion-25/6-130 – 3-Speed Circulation Pump (Domestic Heating)

Bastion-25/6-130 – 3-Speed Circulation Pump (Domestic Heating)

The Bastion-25/6-130 is a reliable 3-speed domestic circulation pump engineered for central heating and hot water recirculation systems. Designed as a straightforward replacement for standard 25/6-130 pumps, this model combines robust performance, easy installation and quiet operation — ideal for radiator circuits, underfloor heating loops and general hydronic applications.

🔧 Technical Specifications

General

• Model: ZL-3001-25/6-130

• Type: 3-speed domestic circulation pump

• Application: Central heating systems, hot water circulation, underfloor heating compatibility

Hydraulic Performance

• Maximum Head: ~6 m at highest speed setting

• Speed Settings: 3 fixed speeds (Low, Medium, High)

  • Speed I: ~3 m head / ~46 W

  • Speed II: ~5 m head / ~67 W

  • Speed III: ~6 m head / ~93 W

• Pump Curve: Manual 3-speed selector (no automatic control)

Mechanical & Installation

• Connection Size: 1½″ BSP (≈ DN25) threaded ports

• Port-to-Port Length: 130 mm standard spacing

• Materials: Cast iron body with corrosion-resistant internal components (typical for this pump class)

• Pre-Connected Power Lead: 3-core cable included

• Gaskets: Supplied with 25 mm gaskets for quick installation

Electrical

• Power Supply: 230 V ~ 50 Hz

• Power Consumption (approx): 46 W – 93 W depending on speed setting

Operating Conditions

• Operating Pressure: Typically up to 10 bar (industry standard for 25/6-130 pumps)

• Liquid Temperature: Up to ~110 °C (standard for domestic heating pumps)

• Protection Class: IP44 splash-resistant (common in similar 3-speed pumps)

• Ambient Use: Indoor boiler or plant room environments

📌 Key Features

• Simple 3-speed manual control for customising flow to system demand

• Standard 1½″ threaded connections for easy retrofit replacements

• Compact 130 mm length fits most existing heating pump spaces

• Quiet operation with canned motor design

• Wide application range across domestic hydronic systems

• Cost-effective replacement for many legacy pumps (e.g., Grundfos UPS2/UPM2, Wilo-Yonos Pico)

📍 Typical Uses

• Residential central heating circulation

• Hot water recirculation loops

• Underfloor heating systems with low head requirements

• Boiler feeder/re-turn circuits