Depends on the hardness: generally, dispensing valve with high durometer & hardness will have better restoring forces. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. The rubber used on these valves provides continual corrosion resistance. The outer layers of Neoprene rubberrepel marine organisms which eliminates marine fouling issues.

From long-term service in harsh environments such as in durable chemical pumps to the high-volume use in disposable intravenous fluid delivery sets.

Flow Controls

The TF-1 is ideal for manhole applications, such as junction boxes, diversion chambers and interceptors, where the invert of the pipe is close to the floor of the vault. These vaults are designed to maximise the available gravity head; thus, the invert pipe is as close to the floor as possible. Ensure that the inside diameter of the pipe is measured, as the outside diameter of the valve needs to be slightly smaller so that it fits inside the pipe.

The TF-1 has become the preferred Tideflex configuration for outfalls. Designed for in-structure and end-of-pipe installations, the TF-1 features a flat bottom and flared top. This allows the valve to be installed at a lower overall elevation than other configurations, with less bottom clearance required. This is especially important in low-lying areas where maintaining as much driving head is critical, or where silt, sand and debris might tend to collect beneath the valve. The TF-1 installs by slipping over the end of an exposed piece of pipe, and is fastened with compression clamps. The inside diameter of the TF-1’s cuff is fabricated to exactly match the outside diameter of the pipe.

Diaphragms

We will not sell, distribute or lease your personal information to third parties unless we have your permission or are required by law to do so. We may use your personal information to send you promotional information about third parties which we think you may find interesting if you tell us that you wish this to happen. Position the valve flange to line up with the pipe flange or headwall drilling pattern, keeping the valve in the vertical position. Lifting equipment will be required on large sizes. During the transportation process or the installation process, if workers did not deal well will cause surface damage.

Depends on the permanent compression set value: for this dispensing valve, we use high-elastic FDA Food Grade silicone, so its restoring forces is good, the dispensing valve can close & open easily without the distortion situation. The design prevents logs or other floating objects from entering the valve closing mechanism, therefore the valve will always close when required to, no matter what the environment may throw at it.

Operation

Depends on the die-cutting tool: It needs to be sharp enough, so that it can cut the silicone thoroughly to invoid diecutting burrs, and to invoid the situation of "slit" doesn't close well. The TF-1 can also be installed on the OD of elliptical pipe and many arch pipes. Tideflex Technologies also offers a thimble plate option allowing the slip-on TF-1 to be installed directly to a headwall or seawall. Position the valve in line with the pipe, lifting equipment may be required for large size models. The clamp(s) may need to be loosened for installation. Our capabilities also include designing, assembling, and testing finished sub-assemblies, including Class VI thermoplastic housings with integral biocompatible elastomeric valves such as those found in: Using a lubricant, it is recommended to lubricate the inside of the rubber where it will slide over the pipe end. This is to prevent the rubber from any damage during installation.

The engineered construction allows the valve to open with minimal pressure, and close against a rising tide with no requirement for a power source or manual operation.

Design

When inserting the valve into the end of the pipe, ensure that the valve is installed in a vertical position so that the valve outlet is going up and down, and not side to side. The flexibility of the Tideflex allows the valve to compress around trapped solids providing a much better seal than flap gates, as confirmed by the USEPA. With the development of the patented curved bill, sealing capabilities are even further improved because the curve bill is more flexible than the rest of the valve and therefore compress more around solids. As pressure or flow increases, the lips open further, allowing more flow. This feature allows solids to pass unhindered with low pressure loss. Measure the section of the valve that will fit onto the pipe, and mark on the pipe with a permanent marker a line where the valve will slide up to. This will ensure the valve is secured on at the right location.