High Performance Butterfly Valve McCannalok Bray International https://www.bray.com/images/default-source/products/mccannalok/s40-s41/s40-s92_homehero_02.jpg?sfvrsn=a3be2b91_4

High Performance Butterfly Valve

McCannalok

Size Range
2½ - 66" (65 - 1650mm)
Temperature Range
-62°F to 500°F (-52°C to 260°C)
Pressure Ratings
ASME Class 150, 300, 600, EN 1092, PN10, PN16, PN25, PN40, PN63, PN100

Specifications

High Performance Butterfly Valve - McCannalok

Size Range
2½ - 66" (65 - 1650mm)
Body Materials
Carbon Steel, Stainless Steel, Nickel Aluminum Bronze
Temperature Range
-62°F to 500°F (-52°C to 260°C)
Stem Materials
Stainless Steel
Pressure Ratings
ASME Class 150, 300, 600, EN 1092, PN10, PN16, PN25, PN40, PN63, PN100
Seat Materials
RTFE with Resilient Energizer, PTFE with Resilient Energizer,
Fire Safe: RTFE and Inconel® with Resilient Energizer
Shutoff Rating
Zero Leakage
Disc Materials
Stainless Steel, Nickel Aluminum Bronze
Body Style
Wafer, Lug and Double Flanged
Design Standard
ASME B16.34, ASME VIII, API 609
Flange Drilling
ASME B16.5, EN 1092
Testing Standard
API 598
Certifications
ABS, Bureau Veritas, CE/PED, China Classification Society (CCS), DNV,
Fire-Test Standard API 607 6th Edition, NSF/ANSI 61-2008 (Potable Water), SIL
Face to Face
API 609, ISO 5752
Fugitive Emissions
ISO 15848-1, API 641
Applications
High Pressure, High Temperature, Critical Service

Features & Benefits

High Pressure, High Temperature, Zero Leakage Butterfly Valves

The McCannalok high performance butterfly valve (also known as a double offset butterfly valve) features an innovative design that offers rugged reliability and extremely easy maintenance in the field. Independent and internal tests prove the Series McCannalok valve's superior service life capability, with zero leakage shutoff.

The McCannalok valve’s unique, patented design received Chemical Processing’s Vaaler Award for Best Product shortly after it was introduced. The simple, innovative design offers rugged reliability and extremely easy maintenance in the field.

Independent and internal tests have proven superior service life capability with zero leakage shutoff through over 100,000 cycles. Series 40 Bray/McCannalok valves can be automated inexpensively with any of Bray’s pneumatic and electric actuators. The McCannalok high performance valve delivers the highest quality and highest value available for your requirements. After a test of over 100,000 cycles at 720 psi, the seat remained in excellent condition, continuing to provide a bi-directional zero leakage seal. Even after more than 878,000 cycles at 2 psi, the McCannalok high performance valve still sealed zero leakage in both directions.

 

High Performance Butterfly Valve McCannalok Features

  • A. Stem

    The high-strength, one piece stem is 17-4 PH Stainless Steel. The valve stem is standardized for interchangeability of Bray actuators.

  • B. Blow-out Proof Stem

    A retaining ring is installed between the machined stem groove and gland retainer step.

  • C. Adjustable Stem Packing

    The stem packing system features easy access to adjusting hex head nuts without requiring removal of the actuator. The system consists of a gland ring, a gland retainer, studs, hex head nuts and lock washers. A 1/4 turn of the hex head nuts is usually all that is required should field adjustment ever be needed. Both hex head nuts must be evenly adjusted and not overtightened.

  • D. Stem Seal

    The stem seal system provides constant compression for a positive seal around the stem. PTFE packing seals the stem and a carbon fiber anti–extrusion ring contains the packing. Flexible graphite rings are available for high temperature applications and are standard on fire safe valves.

  • E. Stem Bearings

    Top and bottom bearings, consisting of a 316 Stainless Steel shell with a TFE/glass fabric liner bearing surface securely support the stem. The stem bearings provide excellent resistance to corrosion and distortion from high temperatures and mechanical loading forces.

  • F. Taper Pins

    Taper pins are precision fit into reamed holes.

  • G. Disc

    The disc has been engineered to maximize flow and minimize resistance providing a high Cv. Stainless Steel is standard.

  • H. Internal Travel Stop

    Designed to prevent travel of the disc and minimizing possible seat damage, therefore extending the service life of the seat.

  • I. Resilient Seat

    Energizer encapsulated in RTFE

  • J. Full-faced Seat Retainer

    Retainer is firmly attached by bolts located outside of sealing area, protecting the bolts from corrosion.

  • K. Body

    All body styles offer bi-directional sealing as standard to full ASME Class 150, 300 or 600 ratings. Extended neck allows for 2" of pipeline insulation and easy access to stem packing adjustments and actuator mounting.

Request A Quote

Select a choice

By clicking the "Submit" button you agree to Bray International Terms of Use and Privacy Policy.