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Warehouse Clearance Os1-040-8cf8-lh - 4" Os Series Wafer Butterfly Valve - Ss Disc - Epdm Seat - Lever Set [oIUN8wpF]

$21.99 $70.99 -69%

4" OS Series Wafer Butterfly Valve The Pratt Industrial OS1-040-8CF8-LH 4" OS Series Wafer Butterfly Valve is a robust and reliable choice for industrial applications. Designed for installation between ANSI 125/150 flanges, this valve ensures a secur

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4" OS Series Wafer Butterfly Valve

The Pratt Industrial OS1-040-8CF8-LH 4" OS Series Wafer Butterfly Valve is a robust and reliable choice for industrial applications. Designed for installation between ANSI 125/150 flanges, this valve ensures a secure fit and optimal performance. With its bi-directional, end of line, bubble tight service capabilities up to rated pressure, it is also rated for full vacuum service, making it versatile for a wide range of applications. The valve adheres to the API 609 category A design standards, guaranteeing compliance with industry regulations.

Key Product Features

Experience the superior engineering of the OS Series Wafer Butterfly Valve with its exceptional features. The two-piece shaft design by Pratt Industrial offers maximum strength and a high flow characteristic disc, ensuring efficient operation. The top flange conforms to the ISO 5211 industrial standard, allowing for universal mounting pads and compatibility with most actuators in the market. The blowout proof stem meets API 609 requirements and includes a secondary stem journal seal for added leak prevention. The shaft seal utilizes a self-adjusting O-ring for a positive seal between the body and shaft. The unique seat design with three tongue and groove connection points ensures stability and reduces operating torque, making the valve ideal for high-pressure and vacuum services.

Applications and Benefits

The OS Series Wafer Butterfly Valve is perfect for various industrial applications, including chemical processing, water treatment, and oil and gas industries. Its robust construction and reliable performance make it a valuable asset for daily operations. With its versatile design and high-quality materials, such as the 304 stainless steel disc and EPDM resilient seat, this valve offers durability and longevity. Whether used in a manufacturing facility or a utility plant, the OS Series Wafer Butterfly Valve is a practical choice that provides peace of mind and cost-effective solutions.

What Our Customers Say

January 2, 2026

Absolutely no complaints!

This is a handy and clever gadget.

- Culhwch P..

January 2, 2026

Absolutely no complaints!

An outstanding tool. It is reliable.

- Ivor Q..

January 2, 2026

Absolutely no complaints!

An outstanding product. It is superb.

- Fabian K..

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