The NIBCO WD2000 is a wafer-type butterfly valve constructed from ductile iron, offering a rugged yet economical solution for commercial and light industrial flow control applications. The valve provides quarter-turn (90-degree) operation for quick open-to-close actuation and is designed for installation between ANSI Class 125 or 150 flanges.
Product Type: Butterfly Valve
Body Material: Ductile Iron
Disc Material: Aluminum Bronze
Seat Liner: Molded-in EPDM (ethylene propylene diene monomer)
Valve Type: Wafer style
Pressure Rating: 200 PSI (bubble-tight shutoff)
Temperature Rating: 225°F continuous, 250°F intermittent service
Operation: Quarter-turn (90 degrees) open to close
Operator Options: Bare stem, lever lock, infinite position plate and lock, manual gear operator
Drive Design: Internal stem/disc geometric drive (no pins or bolts in waterway)
Neck Design: Extended neck allows up to 2 inches of insulation
Installation: Bi-directional (suitable for flow in either direction)
Warranty: 5-year 125% limited warranty
Suitable Services: HVAC, hot/cold potable water, vacuum services, light industrial process applications

The unique molded-in EPDM seat liner provides a leak-proof seal between the valve body and disc, ensuring bubble-tight shutoff at the full 200 PSI pressure rating. The aluminum bronze disc offers excellent corrosion resistance in water-based systems. The internal geometric stem-to-disc drive design eliminates pins or bolts that could create leak paths or turbulence in the waterway, improving flow characteristics and reducing maintenance concerns.
The extended neck design allows for up to 2 inches of pipe insulation, preventing condensation issues in chilled water applications. The quarter-turn operation allows fast open-to-close action with minimal effort. The valve is bi-directional, meaning it can be installed with flow in either direction without affecting performance. Multiple operator options accommodate manual operation with lever handles or gear operators for larger sizes.
The NIBCO WD2000 is widely used in HVAC systems for chilled water and hot water isolation, commercial plumbing for potable water service, industrial process lines for non-corrosive fluids, vacuum systems, and as an economical shutoff valve in water treatment facilities. The valve is certified for drinking water service and meets industry standards for commercial mechanical applications.



