Product Description
The Bray McCannaLok Series 40/41 Stainless Steel High Performance Butterfly Valve is a precision-engineered, double-offset industrial valve designed for reliable flow isolation and control in demanding industrial environments.
Manufactured with available stainless steel body and disc configurations, the valve is designed for high-pressure, high-temperature, high-cycle, and critical-service applications.
Its double-offset design, precision-machined components, and advanced seating technology provide dependable shutoff performance, operational reliability, and durability.
The Series 40 features a wafer-style body, while the Series 41 features a lug-style body.
Key Features
High-performance double-offset butterfly valve design.
Stainless steel body and disc configurations available.
Precision-engineered sealing technology.
Resilient, fire-safe, and metal-seated configurations available.
Suitable for high-pressure and high-temperature applications.
Designed for demanding industrial operating conditions.
ISO 5211 actuator mounting interface.
Available with bare stem, manual handle, or gear operator configurations.
Suitable for marine, shipbuilding, offshore production, and industrial processing applications.

Manufacturer: Bray International
Brand: Bray
Product Series: McCannaLok Series 40 / 41
Product Type: High Performance Butterfly Valve
Valve Design: Double Offset
Body Configuration:
Series 40 – Wafer Type
Series 41 – Lug Type
Nominal Size Range: NPS 2–66 (DN 50–1500), series range
Pressure Rating: ASME Class 150 / 300 / 600; PN 10–100, depending on configuration
Temperature Range: -196°C to +482°C (-320°F to +900°F), depending on selected materials and seat design
Stainless Steel Construction (Trim 066):
Body: Stainless Steel CF8M
Disc: Stainless Steel CF8M
Stem: 17-4 PH Stainless Steel
Stem Seal: PTFE Rings with One Carbon Fiber Ring
Seat Assembly: RPTFE with Silicone Rubber Energizer
Alternative Seat Configurations:
Resilient: RPTFE or PTFE with resilient energizer
Fire Safe: RPTFE + Inconel with resilient energizer
Metal Seat: Inconel
Low Temperature: TFM with resilient energizer
Polar: Engineered Thermoplastic
Shutoff Performance:
Resilient Seat: Zero Leakage
Metal Seat: FCI 70-2 Class IV
Valve Design Standards:
API 609 Category B
ASME B16.34
MSS SP-68
EN 593
Actuator Mounting Standard: ISO 5211
Flange Connection Standards: ASME B16.5 / ASME B16.47 / EN 1092-1
Face-to-Face Standards: ASME B16.10 / API 609 Category B / EN 558 / ISO 5752
Seat Tightness Testing: API 598 / MSS SP-61 / EN 12266 / ISO 5208
Fire Testing (Applicable Configurations): API 607 / ISO 10497
Typical Applications:
Marine and Shipbuilding
Offshore Oil & Gas Production
Industrial Process Systems
Seawater and Freshwater Services
Ship Ballast Systems
Industrial Fluid Handling
Critical Process Isolation
Manufacturer: Bray International
Product Availability: Configuration, size, pressure class, and material selection to be confirmed upon inquiry.