Nibco LD-1000-5-20 Lug Butterfly Valve 20 Inch Gear Op

Product Description

The NIBCO LD-1000-5-20 is a 20-inch lug-style ductile iron butterfly valve with an EPDM cartridge liner and aluminum bronze disc, equipped with a gear operator for quarter-turn actuation. Designed for commercial, mechanical, and industrial piping systems, it opens and closes through a 90-degree rotation, making it straightforward to operate under typical line pressures. The extended neck design accommodates pipe insulation up to 2 inches without interfering with valve operation. Licensed plumbers, pipefitters, and mechanical contractors specify this valve where a reliable, economical shutoff or throttling solution is needed in water service applications.

This valve is well suited for commercial HVAC hydronic systems, industrial process water lines, and mechanical room piping where lug-style end connections are required for dead-end service capability. The EPDM liner makes it appropriate for most water applications, including chilled water and heating hot water circuits. The gear operator is particularly practical at 20 inches, where direct-lever actuation would require excessive torque. Both commercial and industrial installations benefit from the ductile iron body's durability in demanding service environments.

Key Features

• Lug-style body allows dead-end service and independent line section removal
• EPDM cartridge liner recommended for most water service applications
• Aluminum bronze disc provides corrosion resistance in water systems
• Quarter-turn (90-degree) operation for fast, positive open and close
• Extended neck accommodates pipe insulation up to 2 inches
• Gear operator reduces operating torque on large-diameter valve
• Backed by a 5-year 125% limited warranty from NIBCO

Compatibility

Designed as an OEM-style lug butterfly valve for commercial, mechanical, and industrial piping systems requiring a 20-inch ductile iron valve with EPDM liner and gear operator. Consult NIBCO technical data sheets and chemical resistance guides to confirm suitability for specific fluid and pressure conditions.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical codes. Depressurize and isolate the piping section before installation, and verify flange bolt patterns and pressure ratings are compatible with the mating flanges. The gear operator must remain accessible after installation for periodic exercise and maintenance. Refer to NIBCO technical data sheets and catalogs for engineering details, torque tables, and pressure-temperature ratings before commissioning.

Technical Specifications

• Valve Size: 20 inches
• End Connection: Lug
• Body Material: Ductile Iron
• Liner Material: EPDM
• Disc Material: Aluminum Bronze
• Actuation: Gear Operator
• Operation: Quarter-turn, 90 degrees
• Insulation Clearance: Up to 2 inches (extended neck)
• Warranty: 5-year 125% limited
• UPC: 039923778000

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: LD-1000-5-20