Bonomi SR531S with 531S Lug Butterfly valve Viton Seats S-Steel Disc direct mount and Valbia Spring Return Pneumatic Actuator
SR531S
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      Bonomi SR531S with 531S Lug Butterfly valve Viton Seats S-Steel Disc direct mount and Valbia Spring Return Pneumatic Actuator
      Bonomi SR531S with 531S Lug Butterfly valve Viton Seats S-Steel Disc direct mount and Valbia Spring Return Pneumatic Actuator
      Bonomi SR531S with 531S Lug Butterfly Valve and Pneumatic Actuator
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      The Bonomi SR531S package includes the Bonomi 531S Lug Butterfly Valve Viton seats and Epoxy Coated ductile Iron lug body, CF8M Stainless Steel disc. Rubber Lined, ISO 5211 Direct Mount Pad, square stem. API 609 face to face flange. No pins in disc prevent potential leak.

      The package also includes the Valbia 82 Series Pneumatic Spring Return (SR) actuator with Viton seals 0°-90° rotation with Hard anodized Extruded Aluminum Body.

      Available in sizes from 2" to 10".

      Bonomi
      $394.87
      $523.00
      Save 24.5%
      Typically ships within 1-3 business days
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      • The Bonomi SR531S package, includes both the Valve and Actuator, details of each are listed below:

        Valve

        The Bonomi series 531S Lug Flanged Butterfly valve CF8M SS disc with Viton Seats, manually operated features:

        • Epoxy coated cast iron Lug body
        • Pressure rating: 250 psi water (40°F to 80°F) (°C-4 to 27)
        • ISO 5211 Direct Mounting pad/square stem
        • Viton seat -30°F to 250°F (°C -34 to 121)
        • API609 face to face flange
        • Floating dual shaft disc design
        • MSS SP 67 Compliant
        • No pins in disc prevent potential leak points
        • NSF certified for drinking water service (EPDM seats only)

        Models

        • N501S EPDM seats    Sizes 1 1/2" to 12"
        • 531S   VITON seats   Sizes 2" to 12"
        • 541S   BUNA-N seats Sizes 2" to 12"
        Detailed Valve Specifications

        Please refer to the image below for specification. Click on the image to expand

        Bonomi N501S, 531S and 541S Valve Specification

        Actuator

        The Package actuator contains the Valbia 82 series SR (Spring Return)

        Valbia manufactures rack and pinion pneumatic actuators, available in spring return or double acting version, with 0°-90° standard rotation or 0°-180°, and are standardly furnished with VITON seals. Valbia offers a product with a unique patented design, which is able to guarantee high quality standard, performance and reliability.Valbia actuators are versatile and suitable to different applications and operating conditions.
        Valbia pneumatic actuators are available in three versions:

        • The 82 series aluminum with 0°-90° rotation
        • The 83 series aluminum with 0°-180° rotation
        • The 84 series stainless steel with 0°-90° rotation

        The 82 series, with an extruded and hard anodized aluminum body, is manufactured in 15 models to guarantee a wide range of choice according to the requested torque; it allows a 0°-90° rotation and is available in the spring return (SR) or double acting (DA) versions.

        Actuator Features
        • 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
        • Mininum air pressure rating: 80 psi Max: 116 psi
        • Working temperature: -4°F - 302°F
        • No lubrication maintenance required for the entire actuator lifetime
        Valve Size with Pneumatic Spring Return Model
        Size 2" 2 1/2"  3" 4"  5" 6" 8" 10"
        Actuator SR Model SR75V SR75V SR85V SR100V SR115V SR125V SR160V SR180V
        Weight (lbs.) 17.97 18.87 23.08 37.28 51.34 64.44 109.54 152.96
        Actuator Sizing For Pneumatic Spring Return

        The output torque of a spring return actuator is not consistent but decreasing. This is due to the action of the springs. When compressed by the air pushing out the pistons, they accumulate energy which will be available in a decreasing way during the clockwise rotation inversion. Please consult the information below for torque calculation.

        SR - Spring Return Torque chart

        Spring Return Actuator Torque

        Spring Return Torque Valbia Pneumatic Actuators Bonomi 531S Bonomi SR531S
        Spring Return Torque Specs
        Valbia Pneumatic Actuators
        Bonomi N501S 531S 541S
        DAN501S-SRN501S

      • Bonomi
        SR531S

        Data sheet

        Valve Type
        Butterfly Valve
        Valve Size
        2 1/2" 2" 3" 4" 5" 6" 8" 10"
        Valve Temperature Range
        -30° to 250 (°C -34 to 121)
        Valve Body Material
        Ductile Iron
        Valve Body Style
        Lug Style
        Valve Disc Material
        CF8M Stainless Steel
        Actuation Type
        Spring Return Pneumatic
        Actuator Housing
        Hard Anodized Aluminum
        Valve Connection
        Lug Style Flanged
        Actuator Temperature Working Range
        °F (-4 - 302) °C (-20 - 150)
        Acuatator Rotation
        0°-90°
        Valve PSI
        250
        Valve Configuration
        2-Way
        Valve Seat
        Viton
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        Bonomi SR531S with 531S Lug Butterfly valve Viton Seats S-Steel Disc direct mount and Valbia Spring Return Pneumatic Actuator
        Bonomi SR531S with 531S Lug Butterfly valve Viton Seats S-Steel Disc direct mount and Valbia Spring Return Pneumatic Actuator