What key design features does the Bray Triad three-piece ball valve offer for high-pressure, high-temperature, and high-cycle applications?

The Triad features a three-piece body design meeting ASME B16.34 Class 600, with a maximum allowable working pressure of 2200 psi CWP (151 bar) and a temperature range of -46°C to 287°C. The stem packing features a continuously pre-loaded design with Belleville washers to compensate for temperature changes and normal wear; dual body-to-stem packing provides additional external sealing protection, suitable for high-cycle and demanding industrial flow control applications.

How to select valve seats for the Triad ball valve, and what configuration should be considered for steam or high-temperature media?

The Triad comes standard with TFM 1600 seats, with optional RPTFE, UHMWPE, PEEK, Tek-Fil®, stainless steel filled PTFE, metal seats, and cavity filler. TFM 1600 offers chemical resistance with lower porosity and permeability, and helps reduce operating torque; PEEK is suitable for higher pressure and temperature conditions; Tek-Fil® is suitable for high-temperature, high-cycle, and steam applications; metal seats feature Stellite® cobalt-chromium alloy seat overlay for higher temperature capability and wear/corrosion resistance. Specific configuration should be confirmed based on actual model and application conditions.

Can the Triad meet bidirectional sealing, low-pressure, or vacuum service requirements?

The Triad with resilient seats achieves bidirectional bubble-tight sealing with low-pressure and vacuum sealing capability. Product specifications state a zero-leakage seal class. For applications with specific media characteristics, differential pressure, temperature, cycle frequency, or vacuum levels, seat material and model selection should be confirmed accordingly.

What end connections and port sizes are available for the Triad three-piece ball valve?

The Triad covers sizes NPS 1/4 to 4, DN 8 to 100, available in full-port and standard-port configurations. Full-port range is NPS 1/4 to 4, DN 8 to 100; standard-port range is NPS 3/4 to 2-1/2, DN 20 to 65. End connections include NPT threaded, socket weld, extended socket weld, butt weld, extended butt weld, and Class 600 flanged connections. Selection should be based on piping standards, installation space, and service conditions.

How does the Triad ball valve ensure installation safety and operational stability when used with automated actuators?

The Triad features an integrally cast top flange and actuator mounting pad conforming to ISO 5211 bolt patterns, reducing unnecessary actuator movement in high-cycle or continuous-load applications. The stem connects to the ball and operating device via a double-D design and features anti-ingress and blowout-proof construction. Anti-static configuration maintains electrical continuity between the ball, stem, and body to reduce the risk of spark generation from static buildup.

3-Piece Ball Valve Triad Series

Product Overview

Designed for reliability: rugged, high-performance valves for all industries

The Triad Series is Bray’s Most Versatile Three-Piece Ball Valve Design

This three-piece ball valve is engineered for durability and precision, ensuring reliable operation under high-pressure, high-temperature, and high-cycle conditions. It meets API 607 and ASME B16.34 standards, features bubble-tight emergency sealing, offers resilient metal seat options, corrosion resistance, maintenance-free operation, and live-loaded stem packing for consistent performance in industrial applications.
A rugged three-piece ball valve designed for high-performance flow control:
The Triad Series ball valve is a true ASME B16.34 Class 600 standard valve (2200 WOG), featuring a robust three-piece construction engineered for superior performance and reliable operation under demanding conditions.
The Triad Series 3-piece ball valve features redundant body-to-stem packing and is available in full-port and standard-port models. These rugged high-pressure ball valves are ideal for industrial processes, high-temperature, and high-cycle applications. The Triad is available with resilient seats, metal seating, and V-ball control valve trim, with optional accessories and configurations such as anti-static protection and API 607 4th Edition certified fire-safe trim.
Resilient seat materials include RPTFE, PEEK, TFM, Virgin PTFE, UHMWPE, Tek Fil (carbon graphite/TFM), and stainless steel filled PTFE. All resilient seat materials provide bidirectional bubble-tight shutoff with low-pressure/vacuum sealing capability. Metal-seated Triad valve trim features Stellite® cobalt-chrome alloy seat overlay, providing superior corrosion resistance, higher operating temperatures, and excellent wear resistance with high hardness.
NPS ¼ to 2 | DN 8 - 50 full port and NPS ¾ - 2½ | DN 20 - 65 standard port sizes feature self-adjusting live-loaded stem packing with Belleville washers to compensate for environmental changes and wear, ensuring maintenance-free operation. 3” and 4” Triad valves feature external live-loaded packing using Belleville washers for uniform packing load distribution.
Bray Triad Series three-piece ball valves deliver superior performance across a wide range of industrial flow control applications with industry-leading warranty coverage and a proven reputation.

Specifications

Item	Parameter
Size Range	NPS ¼ to 4 / DN 8 to 100
Body Material	Stainless Steel, Carbon Steel, Special Alloys
Temperature Range	-50°F to 550°F (-46°C to 287°C)
Stem Material	316 Stainless Steel
Maximum Allowable Working Pressure	2200 psi CWP (151 Bar)
Seat Material	Standard: TFM 1600, Optional: Tek-Fil®, PEEK, UHMWPE, RPTFE, Metal, Cavity Filler
Seal Class	Zero Leakage
Ball Material	CF8M Stainless Steel
Body Type	3-Piece
Design Standard	ASME B16.34 Class 600
End Connections	Threaded ASME B1.20.1 NPT, Socket Weld ASME B16.11, Extended Socket Weld, Butt Weld ASME B16.25, Extended Butt Weld, Flanged Class 600, ASME B16.10, ASME B16.5
Test Standard	API 598, MSS SP72
Certification	API 607 4th Edition, ATEX, CRN, NACE MR0175, PED, PE(S)R, TR CU, SIL
Port	Full Port NPS ¼ to 4 / DN 8 to 100 Standard Port NPS ¾ to 2½” / DN 20 to 65
Face-to-Face Length	ASME B16.10, Manufacturer Standard
Application	Process, Steam, Fire Safe, Industrial Gases

Features and Benefits

Ingenious Stem Assembly

Flow-Tek manufactures heavy-duty, high-quality stems that connect to the ball and operating device via a double “D” configuration. All Flow-Tek stems are internally entry and blowout-proof, maximizing safety. Triad Series 2½” port valves feature a robust large-diameter stem with live-loaded, self-adjusting primary and secondary sealing. Using Belleville washers, the stem packing is self-adjusting to compensate for temperature changes and normal wear. The stem assembly is secured by a saddle lock washer, preventing stem nut loosening in high-cycle automated applications.

Stem Packing

The primary seal consists of a 50% stainless steel and 50% PTFE thrust washer with a PEEK thrust washer protector. Adjustable stem packing and an additional PEEK packing protector form multiple secondary seals between stem and body. The stem packing is composed of graphite, providing fire-safe protection and extremely high cycle life. This dual stem packing design is exclusive Flow-Tek technology.

Anti-Static Protection

Triad Series anti-static protection valves feature standard anti-static grounding devices. These devices ensure electrical continuity between the ball, stem, and body, preventing electrostatic charge from sparking inside the valve.

Stem Design for 3” and 4” Valves

The stem is guided by the body and gland, ensuring smooth operation even under high torque conditions. The packing gland is adjustable, and all stems are polished to reduce torque. Optional Belleville washers can be added for self-adjusting live loading.

Dual Body-to-Stem Packing

Flow-Tek’s Triad Series valves feature a dual body seal system providing additional external leakage protection. The internal primary seal is TFM material. The secondary seal is graphite. Using TFM as the internal seal minimizes media color contamination. Both body-to-stem packings are securely retained in machined grooves in the body. These grooves reduce seal movement and cold flow, maintaining compression stability even under extreme conditions.

Secure Mounting

The Triad Series features a unique standard feature: an integrally cast top flange ensuring mandatory actuator mounting. This actuator mounting pad prevents unnecessary actuator movement in high-cycle or continuous load applications. The actuation equipment can be easily and safely removed while the valve is under full line pressure. The actuator mounting pad conforms to ISO 5211 bolt patterns. Additionally, the mounting pad facilitates field assembly of Flow-Tek’s media containment device. Combined with the dual body-to-stem packing, this makes it an ideal valve for emission-free severe service, high-temperature and semi-cryogenic, and high-cycle applications.

Seat Selection

A wide range of seat materials is available to meet most application needs. The standard seat material is TFM 1600, which offers reduced porosity and permeability, improved temperature range, and lower valve torque compared to PTFE, while maintaining excellent chemical resistance. Optional materials include RPTFE, Stainless Steel/PTFE (50/50), UHMWPE, Virgin PTFE, PEEK, Tek-Fil® (carbon/graphite filled TFM), full metal seats, and cavity filler. PEEK seats provide high-pressure/high-temperature capability. Tek-Fil seats offer lower torque in high-temperature, high-cycle, and steam service applications.