Valve SERIES 42 /43

Platinum Metals IND LLC supplies the DelVal Valve Series 42/43 — a high-performance range of flanged butterfly valves designed for reliable flow isolation and regulation across a broad spectrum of industrial, commercial, and process piping applications. Combining a robust and compact body design with versatile seating and disc material options, the Series 42/43 delivers consistent, leak-tight shutoff performance in systems handling water, air, gases, chemicals, and a wide range of industrial fluids.

Series Overview

The DelVal Series 42 and Series 43 are flanged butterfly valves distinguished by their body and liner configurations:

Series 42 — Rubber-Lined Butterfly Valve — features a full rubber lining bonded to the valve body interior, providing excellent sealing against the disc and eliminating direct contact between the process fluid and the valve body. This configuration offers outstanding resistance to corrosion and abrasion, making it ideal for water treatment, slurry, chemical, and general industrial service where fluid compatibility with metal body materials would be a concern.

Series 43 — High-Performance Butterfly Valve — designed for more demanding service conditions, the Series 43 features an unlined body with resilient or high-performance seat materials including EPDM, NBR, Viton (FKM), PTFE, and metal seats, enabling it to handle elevated temperatures, higher pressures, and chemically aggressive media that exceed the capabilities of standard rubber-lined designs.

Key Features & Benefits

• Compact, Lightweight Flanged Design — the short face-to-face dimension and low weight of butterfly valves significantly reduces installation space and support structure requirements compared to gate or ball valves of equivalent size, lowering overall project costs.
• Quarter-Turn Operation — fast 90° open-to-close actuation allows rapid system isolation or flow modulation, with minimal operator effort for manual versions or fast response times in actuated configurations.
• Bubble-Tight Shutoff — precision-engineered disc-to-seat geometry delivers reliable, leak-free sealing across the full pressure rating of the valve, meeting the requirements of critical isolation service.
• Wide Seat Material Selection — EPDM for water and mild chemical service; NBR for oil and fuel service; Viton (FKM) for aggressive chemicals and elevated temperatures; PTFE for high-purity and chemically resistant applications; metal seats for high-temperature and abrasive service.
• Versatile Disc Materials — ductile iron, carbon steel, stainless steel (SS 316), and duplex options available to match the corrosion and mechanical requirements of each specific service.
• Actuation Ready — ISO 5211 direct-mount actuator pad as standard, enabling straightforward mounting of pneumatic, electric, or hydraulic actuators without additional brackets or adapters, supporting full automation integration.
• Bidirectional Flow Capability — the Series 42/43 design accommodates flow in either direction, providing installation flexibility and simplifying system design.
• Low Pressure Drop & High Flow Capacity — the unobstructed disc geometry minimizes flow restriction in the open position, reducing energy consumption and pumping costs in large-diameter pipeline systems.
• Wide Size Range — available from 2" (DN50) through 48" (DN1200) and beyond, making these valves suitable for everything from small process lines to large-bore water mains and industrial pipelines.
• Flange Compatible — drilled and faced to ANSI/ASME B16.5, DIN EN 1092, BS 4504, and equivalent international flange standards for seamless integration into existing piping systems.

Pressure & Temperature Ratings

The Series 42/43 is available in pressure ratings from PN6/Class 50 through PN25/Class 150 depending on size, seat material, and configuration. Temperature capability ranges from -20°C to +200°C depending on liner and seat material selection.

Applications

• Water supply, distribution, and treatment systems
• Wastewater and sewage treatment plants
• HVAC heating and cooling water circuits
• Fire protection and suppression systems
• Chemical and petrochemical processing
• Food and beverage processing (PTFE-seated versions)
• Marine and offshore cooling water systems
• Power generation cooling circuits
• Mining and mineral slurry pipelines
• General industrial flow isolation and control

Manual & Actuated Configurations

The Series 42/43 is available in the following operator configurations:

• Lever-operated (with lockable positions) for manual on/off service
• Gear-operated (handwheel with worm gear) for larger sizes where lever torque would be excessive
• Pneumatic actuator packages for automated on/off or modulating control
• Electric actuator packages for remote operation and integration with building management or process control systems
• Complete automation packages including limit switch boxes, solenoid valves, and positioners available as factory-assembled units ready for immediate installation

Available Specifications

Series 42/43 Butterfly Valves are available in a range of sizes, pressure ratings, body materials, seat materials, disc materials, and operator configurations. Surplus stock in excellent condition is available for immediate dispatch alongside new supply options. Custom specifications and third-party inspection can be arranged for project procurement requirements.

Partner with Platinum Metals

Platinum Metals IND LLC, headquartered in Sharjah, UAE, is a trusted wholesale exporter of industrial valves serving clients across the Middle East, Asia, Africa, and Europe. Our technical team provides expert product selection support to ensure the right Series 42 or Series 43 configuration is matched to your specific fluid, pressure, temperature, and installation requirements backed by competitive pricing and reliable global delivery.

Contact us today to check stock availability, request full technical specifications, or obtain a competitive quotation.