S70/S90 Series Threaded Ball Valve
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Threaded Ball Valve S70/S90 Series

Bray S70/S90 Series two-piece threaded ball valves, stainless steel or carbon steel, sizes ¼-3", pressure 1000-2000 psi WOG, zero-leakage shutoff, suitable for general industrial fluid control applications.

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Overview

Adjustable packing and RTFE stem packing ensure safe, leak-free operation under high pressure

S70/S90 Valves Designed for Process Industries, Excelling in High-Temperature and Vacuum Applications

The S70/S90 Series threaded ball valves offer an economical solution for zero-leakage shutoff at pressures up to 2000 psi (137.9 bar), temperatures up to 450°F (232°C), and vacuum service down to 29 inches Hg (gauge), making them ideal for many industrial applications. The S70/S90 Series threaded closures are manufactured to high precision, ensuring tight sealing. The S70/S90 Series threaded two-piece ball valves feature standard-port design with hard chrome-plated balls and RPTFE seats for reduced operating torque and extended service life. The bottom-entry blowout-proof stem is manufactured from ASTM A479 Type 316 stainless steel. The S70/S90 Series valves feature an adjustable packing gland to ensure sealing, a stainless steel safety locking handle, and valve bodies marked with heat codes for full traceability. The S70 Series two-piece cast carbon steel body complies with specifications and uses a black phosphate coating for enhanced corrosion resistance. The S90 Series two-piece cast stainless steel body is investment cast and solution annealed for higher quality and greater strength. The S70/S90 Series valves are designed to MSS-SP 72 and tested to MSS-SP 72. With Bray’s industry-leading warranty, reputation for reliability, and after-sales service, the Bray S70/S90 Series threaded two-piece ball valves deliver exceptional value across a wide range of commercial and industrial fluid control applications.

Technical Specifications

ItemValue
Size Range¼ - 3” (8 - 80mm)
Body MaterialS70: 316 Stainless Steel | S90: WCB Carbon Steel
Temperature RangeS70: -50°F to 450°F (-46°C to 232°C), S90: -20°F to 450°F (-29°C to 232°C)
Stem MaterialASTM A479 Type 316
Maximum Allowable Operating Pressure¼ - 1” 2000psi WOG, 1¼ - 2” 1500psi WOG, 2¼ - 3” 1000psi WOG
Seat MaterialRPTFE
Shutoff ClassZero Leakage
Ball MaterialASTM A351 Gr CF8M
Body TypeTwo-Piece
Design StandardMSS SP-110
End ConnectionsThreaded - NPT
Test StandardMSS-SP 72
PortStandard Port
Face-to-Face LengthManufacturer Standard
ApplicationsGeneral Service, Air, Water, Oil and Gas

FAQ

What media and applications are suitable for the Bray S70/S90 threaded ball valves?

The S70/S90 Series is suitable for general-purpose fluid control, including air, water, oil, and gas applications. The valves feature NPT threaded connections, two-piece body, and standard-port construction, suitable for on/off isolation in commercial and industrial process systems. Specific configuration depends on the actual model and application conditions.

How does the S70/S90 Series achieve sealing reliability under high-pressure, high-temperature, or vacuum conditions?

This series uses RPTFE seats, RTFE stem packing, and an adjustable packing gland for packing seal adjustment; the bottom-entry blowout-proof stem further enhances operational safety in the stem area. The product seal class is zero leakage, suitable for temperatures up to 450°F (232°C) and vacuum service up to 29 inches Hg gauge.

What are the maximum allowable working pressures for different sizes of the S70/S90 ball valves?

"Sizes ¼ to 1 inch: 2000 psi WOG; 1¼ to 2 inches: 1500 psi WOG; 2¼ to 3 inches: 1000 psi WOG. Selection should verify size, media, temperature, and system pressure to ensure operation within the valve's allowable range."

What are the temperature ranges and connection types for the S70/S90 Series?

The S70 Series temperature range is -50°F to 450°F (-46°C to 232°C), and the S90 Series is -20°F to 450°F (-29°C to 232°C). Both use NPT threaded end connections, with a size range of ¼ to 3 inches (8 to 80 mm).

What installation and maintenance points should be noted for S70/S90 threaded ball valves?

During installation, confirm NPT threaded connections match the piping interface and avoid transferring pipeline stress to the valve body. During operation, periodically check stem packing seal condition; if required, adjust via the adjustable packing gland. The valve features a stainless steel safety lock handle for valve position locking management.

Documents

Product Brochure - S70/S90 Threaded Ball ValvesProduct information · EnglishSelection Guide - Threaded Series Ball Valve Part NumbersProduct information · EnglishTechnical Bulletin - Ball Valve Actuator Selection GuideProduct information · English

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