SERIES 32/33/35/36 Large Diameter Resilient Seated

Product catalog summary

Overview: The document provides detailed technical specifications and features of Bray's Series 32/33 and Series 35/36 butterfly valves, which are designed for large diameter applications with resilient seating. These valves are engineered for high performance and reliability, suitable for various industrial applications.

Specifications:

Body: Available in wafer or full-flanged styles, compatible with ANSI 125/150 and other international flange standards. The Series 35/36 can be bolted for downstream flange removal or cross-bolted for maximum stress resistance.
Disc: High-strength casting, spherically machined and hand-polished for 360° concentric seating, ensuring bi-directional bubble-tight shutoff and reduced torque.
Seat: Features a unique tongue and groove design that isolates the body from line media, offering lower torque and excellent vacuum service performance. The seat design allows for easy field replacement and eliminates the need for flange gaskets.
Stem: One-piece through stem design isolated from media, providing high torsional strength. Standardized for direct mounting with Bray actuators.
Pressure Ratings: Series 32 and 35 are rated at 75 psig, while Series 33 and 36 are rated at 150 psig. All valves are factory tested to 110% of their specified pressure rating.

Features:

Secondary seal achieved by interference fit of stem and seat hole diameters.
Tangential taper pins made of 17-4 PH stainless steel for maximum torsional capacity and vibration resistance.
Advanced V-Type stem packing design for self-adjusting, bi-directional sealing, suitable for vacuum applications.
Modular actuator mounting flange and stem connection for easy integration with Bray manual and pneumatic/electric actuators.

Materials:

Body: Cast Iron, Ductile Iron, Cast Steel, 316 Stainless Steel.
Disc: Options include Cast Iron, Ductile Iron, Aluminum Bronze, 316 Stainless Steel, Monel®, Hastelloy®.
Seat: EPDM, Buna-N, FKM.
Stem: Carbon Steel, 304 Stainless Steel, Monel®, Hastelloy®.

Recommendations:

Wafer or double flanged bodies with tongue-and-groove seat design for optimal performance.
No field adjustments necessary to maintain performance.
Bi-directional testing to 110% of full pressure rating.

Performance Data: The document includes Cv values for valve sizing, indicating flow capacity at various disc positions and valve sizes, as well as temperature ranges for different seat materials.

SERIES 32/33/35/36 Large Diameter Resilient Seated

SERIES 32/33/35/36 Large Diameter Resilient Seated

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