Field-Adjustable Butterfly Valve Designed For Easy Maintenance

Field-Adjustable Butterfly Valve Designed For Easy Maintenance
American butterfly valve from Val-Matic Valve & Mfg. Corp.

Interested in Valves?

Get Valves articles, news and videos right in your inbox! Sign up now.

Valves + Get Alerts

The American butterfly valve from Val-Matic Valve & Mfg. Corp. is designed to provide long life and trouble-free performance. Features include 360-degree uninterrupted seating, Tri-Loc seat retention system, traveling nut actuator with external adjustable stops, ductile iron disc, stainless steel seat retention hardware, shafts and body seats. All valves include two-part epoxy interior. Options include stainless steel and other materials, rubber linings and fusion-bonded epoxy coatings.

“The Val-Matic butterfly valve is manufactured with the end user in mind,” says David Scott, national sales manager for Val-Matic Valve & Mfg. Corp. “The resilient seat can be adjusted or replaced by the operator in the field simply by using a wrench.”

Stainless steel tangential tapered pins lock the valve shaft to the ductile iron disc using stainless steel nuts to prevent vibration.

“Vibration will wear a valve out prematurely,” Scott says. “With a tangential pin, because it’s on the side, you have undisturbed shaft material; you retain the integrity of the shaft. You’re not putting a pin or a hole through the center so the shaft material is much thicker, producing a stronger and tighter connection.”

The tapered pin design is also user friendly.

“You loosen the nut and tap out the pin with a soft-blow hammer,” he says. “Because it’s tapered it drops right out. It’s a nice feature, especially for performing maintenance.”

Suitable for water and non-solids wastewater, applications include shut-off service, modulating service, SCADA systems, buried/plant service, pump control and flow control. The valve fully complies with AWWA C504 and C516. It is NSF/ANSI 61 certified for drinking water and is NSF/ANSI 372 certified lead-free.

The valves are available in 150B and 250B AWWA classes with flanged end connections in sizes 3 to 144 inches and mechanical joint end connections in 4 to 48 inches. Wafer-style butterfly valves are designed with ANSI 125 flanges or ISO PN10 and PN16 flanges in sizes 4 to 24 inches.

While no special maintenance is required, a visual inspection is recommended whenever a filter is shut down. Scott suggests inspecting the disc edges to ensure they’re within tolerance and functioning properly. 630/941-7600; www.valmatic.com.



Discussion

Comments on this site are submitted by users and are not endorsed by nor do they reflect the views or opinions of COLE Publishing, Inc. Comments are moderated before being posted.