Butterfly valve large diameter

Description

Product Overview
Butterfly valve large diameter is a high-capacity quarter-turn flow control valve engineered for mid- to large-scale fluid handling systems across industrial, municipal, and energy sectors. It provides dependable isolation and modulation for liquids, slurries, gases, and low-pressure steam in pipelines where space, weight, and rapid operation matter. The valve’s key value proposition is low installation footprint combined with high flow efficiency and fast actuation, delivering reduced lifecycle cost and simplified maintenance for large-diameter piping networks. Strategically, the product addresses growing demand for compact, cost-effective valve solutions in water treatment, power generation, oil & gas terminals, and industrial processing plants that require reliable large-bore shutoff and control.

Key Specifications & Technical Characteristics

• Materials: Body: ductile iron (EN-GJS-500-7) or carbon steel (ASME SA216 WCB) optional stainless steel (SS316/SS304) lining options; Disc: stainless steel (SS316/SS304), ductile iron with stainless facing, or nickel-aluminide coating; Seat: elastomeric (EPDM, NBR), PTFE, or metal-to-metal for high-temperature services.

• Sealing: resilient wafer/ lug-style seat for bubble-tight shutoff (ISO 5208 Class A or as specified); bidirectional sealing options available.

• Size range: large-diameter standard production from 300 mm up to 2400 mm (custom sizes on request).

• Pressure rating: PN6 to PN25 (ANSI Class 150/300 equivalents available) depending on construction and material.

• Actuation: manual gear operator, electric actuator (modulating or on/off), pneumatic spring-return or double-acting actuators, and hydraulic actuation options.

• Face-to-face dimensions: to ISO 5752/EN 558 or ANSI/ASME B16.10 as specified.

• Flange connection: wafer, lug, or flanged variants to EN1092-1 / ANSI B16.5.

• Physical characteristics: typical unit weight varies by diameter and materials; disc designs optimized for low pressure drop and high flow coefficient (high Cv/Kv).

• Surface finish and protection: epoxy fusion-coating, zinc-rich primer, or galvanic coatings; internal lining options for corrosive/slurry services (e.g., vulcanized rubber, PTFE).

• Operational temperature range: -30°C to +180°C for standard elastomers; extended high-temperature trims and metal seats for higher temperatures.

• Certifications & testing: hydrostatic testing to API/ISO standards, fire-safe design available to API 607/API 6FA, SIL rating options for actuated valves on request.

• Packaging: industrial wooden crates, palletized crating with moisture barriers for export; protective covers for disc and seat.

• Shelf life: depends on elastomer selection and storage conditions; recommended in-dry storage and anti-UV protection for elastomeric seats; standard practice: inspect before commissioning after 24 months in storage.

Core Industrial Applications

• Water & wastewater treatment: bulk isolation and flow regulation in raw water intake, treatment trains, and effluent discharge. Large bore size minimizes head loss while enabling fast emergency shutoff.

• Power generation (thermal, hydro, biomass): condenser and cooling water lines, circulating water systems, ash handling (with lined discs), and low-pressure steam isolation where large flows require compact valves.

• Oil & gas midstream and terminals: crude and product transfer lines, storage tank manifold isolation, and pipeline pigging stations; lug-style versions provide safe dead-end isolation during maintenance.

• Mining & slurry transport: lined and coated disc options resist abrasion and corrosion in slurry pipelines; simplifies installation vs heavier gate valves.

• Chemical and industrial processing: bulk transfer, buffering tank isolation, and HVAC chilled/heating water systems where compatibility with process fluids and rapid operation matters.
  Why it performs better than alternatives: compared with gate, globe, or ball valves at large diameters, large-diameter butterfly valves offer substantially lower weight and footprint, faster quarter-turn operation, reduced installation and supporting structure cost, and improved throttling characteristics for large flows. Lined-seat and coated-disc options deliver competitive durability against abrasion and corrosion, reducing total cost of ownership. For modular plant designs, actuator integration and compact flangework reduce lead times and handling complexity.

Competitive Advantages

• Quality consistency: manufactured to controlled-process standards with batch traceability for body, disc, and seat materials; dimensional inspection and pressure testing reports supplied with each shipment.

• Supply reliability: structured production scheduling with safety stock for common sizes and rapid fulfillment pathways for custom builds; multi-site manufacturing options to reduce lead times for global buyers.

• Logistics capability: packaged for ocean export with shock and moisture protection; optimized loading patterns for container and breakbulk shipments; supplier coordination for on-site delivery and customs documentation.

• Price competitiveness: optimized material selection and modular design reduce fabrication and installation cost compared with heavy-valve alternatives; competitive pricing for bulk orders (see MOQ).

• Sustainability: designed for reduced material mass and improved flow efficiency (lower pumping energy); options for recyclable materials and low-VOC coatings; long service intervals reduce replacement frequency.

• Technical support: comprehensive documentation including dimensional drawings, material test certificates (MTC), API/EN test certificates, piping installation guidelines, actuator sizing sheets, and commissioning/support services; application engineering available for fluid compatibility and life-cycle cost modeling.

Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT.

• Typical loading capacity (MT per container):

  • 20 ft container: up to ~18–22 MT depending on diameter, trim, and packing method; ideal for smaller large-diameter assemblies (stub, disassembled units).

  • 40 ft container: up to ~25–28 MT depending on packing and disassembly; larger valves often shipped as breakbulk.

  • Breakbulk/RO-RO or flat-rack options recommended for very large diameters (above 1200 mm) to maximize handling efficiency and minimize risk.

• Lead times: stock items 4–8 weeks; custom materials/trims 10–16 weeks (subject to order confirmation).

• Payment and incoterms: negotiable; standard options include L/C, T/T with staged payments; FCA, FOB, CIF quotes available.

• Warranty: standard 12–24 months limited warranty depending on application and inspection; extended support contracts available.