TruTech Valve
TRU-FLOW DIAPHRAGM VALVES
The TRU-FLOW DIAPHRAGM VALVES provide superior leak proof control for hard-to-handle fluids.
WHAT IS THE TRU-FLOW STRAIGHT THROUGH DIAPHRAGM VALVE?
It is rugged, simple operating valve designed to control the flow of fluids by pressing a resilient diaphragm against the smooth contour of the valve body interior. The Tru-Flow valve, with a number of unique features, is superior to other diaphragm valve designs, and is preferred for demanding applications such as leak-proof control of abrasive and corrosive liquids, suspensions, slurries, and pulps.
HOW DOES THE TRU-FLOW FUNCTION? When the valve is wide open, the fluid passes directly through the streamlined body, which permits a virtually undisturbed flow. The diaphragm is firmly attached between the body and the bonnet, preventing any fluid from entering the bonnet area. As the actuator or hand wheel is initiated, the compressor guides the resilient diaphragm toward the seating contour of the body. The compressor seats the diaphragm against the bottom, positively sealing and preventing further flow. Suspended particles will not cause leakage, as the resilient diaphragm will accommodate such irregularities. The Tru-Flow diaphragm valve permits bidirectional flow and can be installed in any position.
TRU-FLOW ADVANTAGES
HIGHER OPERATING PRESSURES The Tru-Flow diaphragm valve is designed for higher operating pressures than other straight through diaphragm valves.
COMPACT DESIGN Tru-Flow's face to face dimensions sizes 1 ': 2': 3': 4': and 6': conform to ASME/ ANSI B 16.10, class 125 cast iron and class 150-cast steel. Consequently, the Tru-Flow in these sizes is interchangeable with most solid wedge, double disc, and resilient wedge gate valves as well as short pattern plug and ball valves.
STANDARD DUCTILE IRON CONSTRUCTION A ductile iron valve is stronger than cast iron and less likely to be affected by abuse, improper, installation or natural disaster. Materials of superior quality are essential to comply with today's demanding environmental legislation. Ductile iron valves are generally as strong as the piping system in which they are installed.
HIGHER FLOW COEFFICIENT The patented Tru-Flow body and Duo-Flex diaphragm provide the streamlined flow of a venturi without substantially changing the incremental cross sectional area. The velocity and static pressure remain essentially unchanged. The result is a minimum pressure drop through the valve.
LONGER DIAPHRAGM LIFE Because of the unique body and diaphragm design of the Tru-Flow valve, the diaphragm is protected from the fluid flow while in the open position. The Tru-Flow's short stroke also serves to reduce diaphragm's stress.
FUGITIVE EMISSION CONTROL The Tru-Flow valve, as a standard, has effectively zero emissions. The Tru-Flow, as an option, can be furnished with a sealed bonnet. In the event of a diaphragm rupture, a sealed bonnet will protect against the escape of fumes or media from the valve. A pressure gauge or monitoring device can be mounted on the bonnet for immediate detection of service interruption.
DIAPHRAGM ASSEMBLY The Duo-Floex diaphragm is molded around a rigid metal insert which is connected to the compressor with two bolts. In addition, the compressor supports almost the entire surface of the diaphragm even under high vacuum conditions.
IN LINE MAINTENANCE The Duo-Flex diaphragm can easily be replaced in line. The straight through design also facilitates the use of brushes or rods to clean the valve.
WIDE RANGE OF MATERIALS AND SIZES Tru-Flow diaphragm valve bodies are available in many materials with various linings. A wide selection of Duo-Flex diaphragm materials is also available.
