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Threaded Ball Valve 51 Series

Bray 51 Series two-piece brass threaded ball valve, sizes ¼-4", pressure 600 psi WOG, full-port design, suitable for water, steam, oil, and gas in general commercial and industrial applications.

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Overview

Reliable 2-piece brass ball valve for water, steam, oil, and gas systems

Adjustable Stem Packing Prevents Leakage for Reliable Operation

Bray 51 Series brass threaded ball valves are ideal commercial general-purpose valves for low-pressure applications. The 51 Series threaded ball valve features simple quarter-turn operation with low operating torque and bubble-tight shutoff, making it an excellent choice for general service applications including water, steam, oil, and compressed gas. The 51 Series features a two-piece brass body design with deep-groove threaded seals for simplified maintenance and repair. This feature enhances valve reliability across various applications. The bottom-entry blowout-proof stem prevents the stem from being ejected under line pressure. The 51 Series threaded ball valve features a full-port design with a hard chrome-plated brass ball to maximize flow and extend valve service life. The adjustable stem packing prevents media leakage through the stem, maintaining system integrity. With Bray’s industry-leading warranty, reputation for reliability, and after-sales service, the Bray 51 Series threaded ball valve delivers exceptional value across a wide range of commercial and industrial fluid control applications. The 51 Series valve is equipped with a vinyl-insulated handle for comfortable operation, protecting users from heat and cold.

Technical Specifications

ItemValue
Size Range¼ to 4” (8 to 100mm)
Body MaterialBrass
Temperature Range-50°F to 400°F (-46°C to 200°C)
Stem MaterialBrass
Maximum Allowable Operating Pressure¼ to 2” 600psi WOG, 150psi WSP
2½ to 4” 400psi WOG, 150psi WSP
Seat MaterialPTFE
Shutoff ClassZero Leakage
Ball MaterialChrome-Plated Brass
Body TypeTwo-Piece
Design StandardMSS SP-110
End ConnectionsThreaded ASME B1.20.1 NPT
Test StandardMSS-SP72
CertificationsCSA, UL
PortFull Port
Face-to-Face LengthManufacturer Standard
ApplicationsGeneral Service (Oil, Water, or Steam), Compressed Gas

FAQ

What media and applications are suitable for the Bray 51 Series threaded ball valve?

The 51 Series is suitable for general fluid control applications including water, steam, oil, and compressed gas, as a commercial general-purpose valve for low-pressure applications. Selection should confirm the actual model based on media, temperature, pressure, and piping connection requirements.

What benefit does the full-port design of the 51 Series ball valve provide for piping systems?

This series features a full-port construction with a chrome-plated brass ball, minimizing flow resistance and maximizing flow capacity, suitable for general piping applications requiring reduced pressure drop.

How does the Bray 51 Series reduce the risk of stem leakage?

The valve features adjustable stem packing to help prevent media leakage along the stem; a bottom-entry blowout-proof stem design prevents the stem from being ejected under line pressure, helping maintain system integrity.

How to select pressure ratings for different sizes of the 51 Series ball valve?

Sizes ¼ to 2 inches have a maximum allowable working pressure of 600 psi WOG, 150 psi WSP; sizes 2½ to 4 inches are rated 400 psi WOG, 150 psi WSP. The valve temperature range is -46°C to 200°C. Actual application should verify media, temperature, and pressure conditions.

What are the maintenance features of the 51 Series threaded ball valve?

The 51 Series features a two-piece brass body with deep-groove threaded seals to simplify maintenance and repair. The valve operates with quarter-turn rotation and low operating torque, and features a vinyl-insulated handle for improved operating comfort and reduced thermal contact effects.

Documents

Product Brochure - 51 Series Threaded Ball ValveProduct information · EnglishSelection Guide - Threaded Series Ball Valve Part NumbersProduct information · EnglishTechnical Bulletin - Ball Valve Actuator Selection GuideProduct information · English

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