Multiport units remove valve duplication

Edited by the Engineeringtalk editorial team Jul 27, 2004

Offering three- and four-way flow control, Multiport Series valves are available in two different body styles, a compact standard port and a block style full port.

Offering three- and four-way flow control, 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 media; 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 and full port, 0.25-8in, in stainless steel and carbon steel construction.

Pressure ratings range from 800 to 1000lb/in2 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 0.25 to 4in.

Many parts are fully interchangeable between models.

Stem seals in Multiport Series 0.25-4in valves feature a live-loaded stem packing assembly for positive sealing.

Using Belleville washers, the stem seal automatically adjusts to compensate for changes in temperature and normal wear.

The 6-8in valves use an independent packing gland which can be easily adjusted while the valve is still in service.

The 0.25-2in 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 bidirectional control and shutoff combined in one valve - with an off position in both T and L port balls.

Flow-Tek's seat design ensures bidirectional, 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 ISO5211 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.

0.25-2in valve stems are pinned, 2.5-8in stems and balls are one-piece with trunnion mounting.

All stems offer blow-out 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.