Description
Leader butterfly Valve, Wafer Type With Lugs, Ductile Iron Disc, BS 5155 (Gear Operated), available 200 mm to 600 mm at PN 16. A quarter turn moves the disc through the full stroke, so large-bore lines can be operated quickly without a gearbox in the smaller sizes. Gear operation keeps the effort manageable at the larger bores, where a lever would need more force than one person can apply. The IS 210 cast iron body is the economical choice at larger bores. It suits steady water service but not lines that see mechanical shock. Lugged bodies bolt to each flange independently, so downstream pipework can be removed with the valve still holding the line. The table above gives the catalogue reference and price for each size in the range.
