BUTTERFLY VALVE – BOAX-B

Description

▪ Centred-disc butterfly valve, sealed by elastomer liner (EPDM XC or Nitrile K), with lever, manual gearbox, pneumatic or electric actuator; semi-lug body (T2), full-lug body (T4). Body types T2 and T4 are suitable for downstream dismantling and dead-end service. Valve disc made of nodular cast iron or stainless steel. Connections to EN.

Design Details

▪ Wafer-type body with flat faces – T1: DN 650 – 1000 ▪ Semi-lug body – T2: DN 40 – 600 ▪ Full-lug body with raised faces – T4: DN 40 – 600 ▪ Flanged body with flat faces – T5: DN 650 to 1000 (DN 150\to 600 on request) ▪ Dead-end service and downstream dismantling possible with body types T2, T4 and T5 ▪ Elastomer liner: thicker elastomer in the area of the shaft passage ensures leak-proof sealing to atmosphere ▪ The spherically machined valve disc ensures perfectly tight shut-off: no leakage visible to the naked eye ▪ Heat barrier between valve and lever ▪ Face-to-face length to ISO 5752-20 and EN 558-1-20 ▪ EN, ASME connections ▪ Top flange to ISO 5211 ▪ Marking in accordance with EN 19 ▪ Absolutely tight shut-off (no leakage visible to the naked eye) in either direction of flow in accordance with EN 12266-1, leakage rate A, and ISO 5208, category A. ▪ Design to EN 593 and ISO 10631

Technical Data

▪ Function  : Shut off/control flow ▪ Connection type  : Flange ▪ Body : Nodular cast iron ▪ Shaft : Chrome steel ▪ Disc : Nodular Cast iron or Staistainless steel ▪ Liner :  EPDM, Nitrile (NBR), EG ▪ Nominal Diameters DN 40 – 1000 ▪ Max. Operating Pressure : DN 40 – 200 : 16 bar / 230 psi | DN 250 –1000: 10 bar / 145 psi ▪ Temperature range : – EPDM = -10 °C /+14 °F to +110 °C /+230 °F – Nitrile = -5 °C / +23 °F to +90 °C /+194 °F – EG =  -20 °C /- 4 °F to +65 °C /+149 °F

Applications

▪ Spray irrigation systems ▪ Domestic water supply ▪ Water extraction ▪ Hot-water heating systems ▪ Air-conditioning ▪ Washing plants ▪ Paint shops ▪ General irrigation systems ▪ Swimming pools ▪ Pressure boosting ▪ Water treatment ▪ Rainwater harvesting

Fluids handled

▪ Heating water ▪ Cooling water ▪ Drinking water ▪ Waste water without faeces ▪ Fluids containing mineral oils ▪ Oil