DeZURIK On-Center Resilient Seated Butterfly Valves (BOS-CL)

BOS-CL On-Center Resilient Seated Butterfly Valves are designed to handle a wide variety of liquids and gases. They are available in lugged 2-24″ (50-600mm) ductile Iron body design with discs of nylon coated ductile iron, 316 stainless steel or aluminum bronze. BOS-CL valves feature a one-piece body, high performance seat bonded to a solid backing ring, three heavy duty bearings, and a blow-out proof shaft.

The On-Center Seat Valve design provides a streamlined disc with high flow capacity. Designed for both on-off and throttling, the BOS-CL provides bi-directional shutoff to the full rating of the valve. BOS-CL Valves provide bubble tight shutoff and can be used on dead end service with an attached downstream flange. For high strength and corrosion resistance, three disc material choices are available: Ductile Iron Nylon Coated, 316 Stainless Steel and Aluminum Bronze.

The BOS-CL seat bonding process ensures the seat is held firmly in place and provides a long lasting, maintenance free seal. The seat is bonded to a rigid backing ring which reduces flexing and fatigue. The bonded seat also improves performance when the line maintains a vacuum, or when handling viscous liquids – circumstances that tend to dislodge seats that are not solidly retained. BOS-CL Valves have integral flange seals that eliminate the need for flange gaskets.

Dezurik On Center Resilient Seated Butterfly Valves (bos Cl)
Dezurik Bos Cl
Dezurik Bos Cl 2
Dezurik Bos Cl 3
Dezurik On Center Resilient Seated Butterfly Valves (bos Cl)
Dezurik Bos Cl
Dezurik Bos Cl 2
Dezurik Bos Cl 3
Sanpshot
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SIZE RANGE:
2-24″ (50-600mm)

TEMPERATURE RANGE:
Acrylonitrile-Butadiene (NBR) -20 to 180°F (-29 to 82°C)
Ethylene Propylene and a Diene (EPDM) -20 to 250°F (-29 to 121°C)

PRESSURE RATING:
Ductile Iron Nylon Coated (DINY) or 316 Stainless Steel (S2) Discs:
2-12” (50-300mm) = 175 psi (1210 kPa);
14-24” (350-600mm) = 150 psi (1030 kPa)
Aluminum Bronze (ALB) Discs  = 150 psi (1030 kPa)

BODY STYLES:
Lugged 2-24″ (50-600mm)

BODY MATERIAL:
Ductile Iron

ACTUATOR TYPE:
Lever, handwheel, chainwheel, PowerRac double-acting and spring-return cylinder, Compak double-acting cylinder, G-Series cylinder

Bulletins
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DeZURIK BOS-CL On-Center Resilient Seated Butterfly Valves 46.00-3

DeZURIK BOS-CL On-Center Resilient Seated Butterfly Valves 46.00-3

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White Papers
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Defining Expectations During Valve Selection

Defining Expectations During Valve Selection

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Selection & Sizing
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Alpha I Web Icon

Alpha I

Alpha-I is a control valve sizing program that performs sizing calculations for DeZURIK control valves based on your process conditions. Click the icon above to learn more and download the program.

Material Selection Guide

Material Selection Guide

DeZURIK’s Material Selection Guide program makes it quick and easy to determine which metals or elastomers are suggested as suitable for application in a specific corrosive media. Click the icon above to learn more or use the program.

Specifications
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DeZURIK BOS-CL On-Center Resilient Seated Butterfly Valves Suggested Specification 46.01-2

DeZURIK BOS-CL On-Center Resilient Seated Butterfly Valves Suggested Specification 46.01-2

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Videos
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Butterfly Valves from DeZURIK APCO Hilton

Butterfly Valves from DeZURIK APCO Hilton

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CAD Drawings
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Manuals
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Valve Manuals

D10500 - DeZURIK 2-24" BOS-CL BUTTERFLY VALVES

D10500 – DeZURIK 2-24″ BOS-CL BUTTERFLY VALVES

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Actuator Manuals

DP00226 - COMPAK (AERO 2) ACTUATOR

DP00226 – COMPAK (AERO 2) ACTUATOR

Download Instruction Manual
D10501 - DeZURIK AM-SERIES MANUAL GEAR ACTUATOR

D10501 – DeZURIK AM-SERIES MANUAL GEAR ACTUATOR

Download Instruction Manual
D10475 - DeZURIK G-SERIES CYLINDER ACTUATOR

D10475 – DeZURIK G-SERIES CYLINDER ACTUATOR

Download Instruction Manual
D10461 - DeZURIK TEN-POSITION LEVER ACTUATOR

D10461 – DeZURIK TEN-POSITION LEVER ACTUATOR

Download Instruction Manual
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We look forward to helping you select a valve for your application.

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