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Uninterrupted Seat Resilient Seated Butterfly Valves (BOS-US)
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DeZURIK Uninterrupted Seat Resilient Seated Butterfly Valves (BOS-US)

Design Features:

BOS-US Uninterrupted Seat Resilient Seated Butterfly Valves are used to handle a wide variety of liquids and gases, including water, air, petroleum, and noncorrosive chemicals. BOS-US Valves are extensively used in hot-process applications, in mining operations, in paper mills, and in environments requiring up to 28"-Hg (710mm-Hg) of vacuum.

In thousands of installations worldwide, DeZURIK BOS-US Valves have a proven record of long-term reliability, throttling control, value-added design features and unmatched economy.

BOS-US valves feature an uninterrupted seat design, one-piece body, solid one-piece shaft and a high performance resilient seat. Sizes 2-20” (50-500mm) feature seat bonded to the body while sizes 24” (600mm) and larger feature a seat bonded to a solid backing ring.

Uninterrupted Seat Resilient Seated Butterfly Valves (BOS-US) Specifications

SIZE RANGE:
2-36" (50-900mm); 
up to 42" (1050mm) on application

TEMPERATURE RANGE:
to 250°F (121°C)

PRESSURE RATING:
2-20” (50-500mm)
250 psi (1720 kPa) with ductile iron/nickel plated disc;
200 psi (1380 kPa) with 316 stainless steel disc
24-36" (600-900mm)
175 psi (1210 kPa)
 

SHUTOFF CAPABILITY:
Bubble-Tight, full rated bi-directional shutoff; lugged valves provide dead end service to full valve rating.

BODY STYLES:
Wafer or lugged

BODY MATERIAL:
2-20” (50-500mm) ductile iron;
24-42” (600-900mm) cast iron

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

CAD Files

Bulletins (English)

Specifications (English)

Manuals (English)