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Mega Sale 2-1/2 Inch Bonomi Da540s Butterfly Valve, Wafer Style, Cast Iron Body, Stainless Steel Disc, Buna-n Seat, Double Acting Pneumatic Actuator 75% Off - Today Only [jFEnDdXa]

$44.99 $143.99 -69%

Bonomi DA540SBonomi North America series Direct mount cast iron wafer style, epoxy coated, resilient seat butterfly valves in sizes 1-1/2”-12”, with Buna-N seats, DA540S has a stainless steeldisc. This series shall offer a dual stem design and ISO 52

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Mega Sale 2-1/2 Inch Bonomi Da540s Butterfly Valve, Wafer Style, Cast Iron Body, Stainless Steel Disc, Buna-n Seat, Double Acting Pneumatic Actuator 75% Off - Today Only [jFEnDdXa]

Bonomi DA540S
Bonomi North America series Direct mount cast iron wafer style, epoxy coated, resilient seat butterfly valves in sizes 1-1/2”-12”, with Buna-N seats, DA540S has a stainless steel
disc. This series shall offer a dual stem design and ISO 5211/DIN 3337 direct mounting for high cycle automation capabilities.
In addition, the 540S series features a phenolic-backed cartridge seat design which offers a 250 CWP maximum pressure rating, and conforms to ANSI B16.1.
The Valbia pneumatic actuator comes with a hard-anodized aluminum body, and powder coated end caps. In addition, all Valbia pneumatic actuators are standardly furnished with elevated temperature seals to 302F. The patented side loaded limit stops never enter the piston chamber eliminating extra possible leak paths.

Bonomi DA540S Datasheet

ACTUATOR FEATURES
• Hard anodized extruded aluminum body
• Concentric spring sets
• Die cast aluminum end caps
• Solid steel barstock pinion (not casting)
• 0°-90° rotation adjustment cam
• 0°-90° rotation adjustment bolts
• POM piston guides
• Minimum air pressure rating: 80 psi
• Maximum air pressure rating: 116 psi
• Working temperature: -4°F - 302°F
• No lubrication maintenance required for the  entire actuator lifetime
• 100% factory tested

VALVE FEATURES
• ISO 5211 Direct Mount/Square Stem
• Epoxy coated Ductile Iron Wafer body
• 540N/540S - BUNA seats (10°F TO 250°F)
• API609 face to face flange
• Floating dual shaft disc design
• MSS SP 67 compliant
• No pins in disc prevent potential leak  points

What Our Customers Say

January 16, 2026

Absolutely no complaints!

A top quality product for sure, and for indeed.

- Dai V..

January 16, 2026

Absolutely no complaints!

A really good item. I really, really, really do love it.

- Harri I..

January 16, 2026

Absolutely no complaints!

A product that genuinely brightens my day.

- Hamish K..

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