Technical Data Sheet Inclined Seat Butterfly Valve With and Without Counterweight

• RYL inclined seat valves are designed so that the seat plane is inclined to the vertical. This reduces the swing angle and closing time, decreasing the risk of water hammer and allowing their use in most valve applications.
• In addition to the reduced seat angle and shorter closing time, this damper uses a triple offset disc design to improve rapid opening, reduce pressure loss and provide better closing.
• No moving parts on the exterior of the valve (standard version).
• Easy opening of the valve disc, as it is not fixed to the shock absorber.
• Opening under low differential.
• Butterfly with double eccentricity allowing a reduction in operating torque and a reduction in wear on the seal.
• Possible mounting of the lever arm on both sides of the valve.
• Modification of the orientation of the lever arm allowing the opening or closing of the leaf to be influenced (depending on the position of the flap).
• Adjustment of the sensitivity of the leaf when opening or closing closing.
• Maintenance-free.
• Welded, precision-machined joint seat in micro-machined stainless steel.
• Ductile iron body and disc, coating epoxy powder, with a minimum of 250 µm interior/exterior blue epoxy RAL5005 GSK standards.

Options

• Hydraulic end-of-stroke shock absorber.
• The hydraulic end-of-stroke shock absorber effectively reduces the effects of impacts of ram.
• Easy external access for maintenance of the hydraulic damping system.
• The damping is adjustable according to needs.

Compliance with standards

• Drilling of the flanges connection according to standards EN 1092-2 and ISO 7005-2: -ISO PN 10 or 16 for DN 200 to 1200 - ISO PN 25 for DN 200 to 600
• Face-to-face dimensions according to standards: NF EN 558-1 s (except DN 1100), ISO 5752 (except DN 1100).

Characteristics

• Range: DN 150 to 1400.
• PFA 10, 16, 25.
• Use temperature: +10°C to +80°C.
• Waterproofing: rate 1 according to DIN 3230-BN standard.
• Special versions on request.

Applications

• Pumping stations in water distribution and irrigation (filtered water).
• Water distribution and irrigation networks (filtered water).
• Fire protection networks.< /li>

Tests

• Fully tested manufacturing according to DIN 3230-BN standard.