Technical data

PN: ≤ 25

Class: 150

DN: 50 - 1200

T [°C]: ≥ -50 - ≤ +260

Description

Double-offset butterfly valve, with plastomer seat (also in fire-safe design), metal seat or elastomer seat (FKM [VITON R] or NBR [Nitrile]). Lever or manual gearbox, pneumatic, electric or hydraulic actuator. Body made of nodular cast iron, cast steel, stainless steel, aluminium bronze or duplex stainless steel (254 SMO). Wafer type body (T1), full-lug body (T4), T4 suitable for downstream dismantling and dead-end service with counterflange. Connections to EN, ASME, JIS. Fire-safe design tested and certified to API 607. Fugitive emissions performance tested and certified to EN ISO 15848-1. ATEX-compliant version in accordance with Directive 2014/34/EU.

Applications

Petroleum, gas, chemical and petrochemical industry, marine applications, transport of petroleum products and chemicals, sugar industry, geothermal energy, shipbuilding, low-pressure steam, vacuum service, mining, corrosive fluids, cleaning agents, highly aggressive fluids, brine, paper and pulp industry, fertilisers. All applications requiring offset-disc butterfly valves.

Nominal diameter:DN50-800
Nominal pressure: PN10-50,Class150-300
Disc material:Stainless steel
Connection: Flange
Application fields:Industry, Petrochemical

1. Top flange according to ISO 5211 enables direct mounting of manual operators and actuators. Longer neck of ABO butterfly valves results in insulation of ISO top flange, for protection of mounted actuator and meeting heating system requirements.
2. Disc has been engineered to maximize flow and minimize resistance providing a high Kv/Cv. Stainless steel material selection is standard.
3. Perfectly profiled seat ring ensures total tightness and also high number of cycles. PTFE seat is reinforced by 25% glass fibre which decreases wear and increases temperature resistance of the valve. The seat does not rely on any secondary support components to hold it in place which allows for longer service life with less maintenance required.
4. Over-travel stop is designed to prevent over-travel of the disc and minimize possible seat damage, thus provide for extended service life of the seat.
5. Double offset design ensures safe function and tightness even in case of changing temperatures or in case of pressure peak.

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