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