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Overview	Features	Typical Specifications
Typical Specifications CIRCULATING PUMPS: Provide Armstrong Holden Brooke Pullen Starflex 4039 Series belt driven pump to Armstrong Holden Brooke Pullen Series typical specification with motor as per the following: With bareshaft pump dimensions and performance to BS5257 and ISO2858, Starflex 4039 materials of construction to be: Body castings: High grade close-grained cast iron to BS1452 grade 260. Impeller: Corrosion free gunmetal bronze to BS1400 LG2C Shaft: Corrosion free stainless steel to BS970 grade 431S29 Mechanical seal: Self adjusting rubber bellows type with silicon carbide seat, antimony bonded carbon rotating face, stainless steel metal parts and robust EPDM elastomer. Bearings: Deep groove ball type, grease lubricated, sealed for life. Belt type: Vee-belt Pump impeller to have back vanes to maintain hydraulic balance to ensure long bearing life. Mechanical seal to have visible external recirculation line to ensure adequate flushing and cooling. Flanges to be provided with plugged tappings, suitable for pressure gauge connection. Flanges to BS4504 PN10 or PN16. Belt tension to be maintained by adjusting bolt that moves the motor shaft relative to the pump shaft. Slipper tensioner type not permitted. Belts to be visible through the drive guard. Belt driven pump shall be capable of increase or decrease in head by 20% by change of belt and pulleys only. Pump to have back pullout facility that enables the pump internals to be inspected without disturbing the pipework or the motor. The driving motor shall be of squirrel cage induction type with IP55 enclosure and Class F insulation with Class B temperature rise, wound for a 3/50/400 electrical supply. Efficiency category to be Eff2. Alternatively Eff1 high efficiency motor qualifying for Enhanced Capital Allowances scheme. The product shall be CE marked showing compliance with both the EMC Directive 89/336/EEC and the Low Voltage Directive 72/23/EEC. Environmental Ratings: Temperature: 0 - 40°C Max Relative Humidity: 93% +2%, -3% Typical Specifications for Series 4039 Starflex				Additional Links PDF Brochures Performance Curves Submittal Data Installation and Operation Guides Replacement Parts