Ball Valves offer 3-way and 4-way flow control.

Press Release Summary:

Multiport Series combines multidirectional flow with shutoff capacity in one valve. Available from ¼-8 in., valves feature stainless steel or carbon steel bodies and pressure ratings from 800-1,000 psi. Fourth seat acts as self-contained seal to prevent leakage in cavity area and maintains proper alignment of ball. Standard port valves offer NPT threaded or quick clamp end connections, while full port valves feature NPT threaded, quick clamp, or flanged end connections.

Original Press Release:

New 3 & 4 -Way Multiport Ball Valves In Standard And Full Port, ¼ Inch - 12 Inch

Houston, TX-July 21, 2004-Flow-Tek, a subsidiary of BRAY INTERNATIONAL, Inc. has introduced a new, fully integrated line of multiport ball valves - the Multiport Series. Offering 3-way and 4-way flow control, the Multiport Series valves are available in two different body styles, a compact standard port and a block style full port. Cost effective Multiport Series ball valves feature multidirectional flow combined with shutoff capacity in one valve. Valve duplication and the need for an extra shutoff valve are eliminated.

Standard applications for Multiport Series valves include mixing or blending of line medias; diversion of flow to different location; bypass of flow around strainers, meters, and heat exchangers; direct flow out-of or into storage tanks; and shutoff flow from different directions. Valve bodies are available in standard & full port, 1/4"-8", in stainless steel and carbon steel construction. Pressure ratings range from 800 psi to 1000 psi depending on size.

Standard port valves are available with NPT threaded and quick clamp end connections. Full port valves are available with NPT threaded, quick clamp and flanged end connections. As a special added feature, full port valves are also available with socket weld or butt weld end connections on sizes 1/4" to 4". Many parts are fully interchangeable between models.

Stem seals in Multiport Series 1/4"- 4" valves feature a live-loaded stem packing assembly for positive sealing. Utilizing belleville washers, the stem seal automatically adjusts to compensate for changes in temperature and normal wear. The 6"- 8" valves utilize an independent packing gland which can be easily adjusted while the valve is still in service. The 1/4"- 2" valves also offer primary and secondary stem sealing. The primary seal is a thrust washer and O-ring assembly. The adjustable stem packing creates a secondary seal between the stem and body in the upper stem journal area.

Especially significant, all standard Multiport Series valves are supplied with an additional fourth seat. This seat acts as a self-contained seal to prevent leakage in the cavity area and maintains proper alignment of the ball. The added seat delivers bi-directional control and shutoff combined in one valve - with an OFF position in both T and L port balls. Flow-Tek's seat design ensures bi-directional, bubble-tight sealing with low operating torque.

The Multiport Series also feature a secure mount. The integrally cast top flange ensures positive actuator mounting. Actuation equipment can be easily and safely removed while the valve is under full line pressure. The mounting flange is designed to ISO 5211 standard with direct flush-mount capabilities. By repositioning the travel stop pin bolt on the mounting flange, all flow patterns are available from the standard valve.

The ball and stem connection is designed to ensure a positive connection. 1/4"- 2" valve stems are pinned, 2 1/2"-8" stems and balls are one-piece with trunnion mounting. All stems offer blowout proof protection. Balls are precision machined and mirror finished for bubble-tight shutoff with less operating torque. Flow-Tek balls have machined edges to reduce seat wear and provide a high cycle life.

Many parts including balls, stems, seats, and stem and body seals are interchangeable between different models of the same size valve. Optional cavity fillers are available for Multiport models 230/240 and 150/300 valves. Cavity fillers reduce the possibility of media contamination due to line media fluids becoming entrapped in the void between the ball and the valve body wall.

A wide range of seat materials are available to meet most applications, including standard PTFE plus RPTFE and Tek-Fil® (carbon/graphite filled TFM). Tek-Fil seats offer reduced torque in high temperature, high cycle, and steam service applications.

Flow-Tek, Inc., headquartered in Houston, is a leader and innovator in process control automation, with worldwide manufacturing and distribution facilities. Products include manual and automated 1/4² through 12² ball valves, pneumatic and electric actuators, valve status monitors, electro-pneumatic and pneumatic positioners, solenoid valves and control accessories. For more information, contact Tommy White at 11850 Tanner Road, Houston, TX 77041. Phone 832-912-2300; FAX 832-912-2301. email:

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