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: There are no mechanical parts that can freeze, corrode, bind, or otherwise inhibit smooth operation. Vernay meets the needs of medical device and diagnostic equipment manufacturers by offering a variety of elastomeric fluid control options that provide your device with accurate and repeatable performance. These products are ready to be designed into your application, providing cost-effective, safe and reliable fluid handling. Vernay also provides test data and specifications to support your device qualification process. We offer a comprehensive range of biocompatible Silicones or Vernay Polyisoprene formulations for your fluid, gas, and media-based applications. We also have experience using other component materials such as:

Ensure that the valve is installed in a vertical position, with the opening in a vertical up and and down position. This is how the valve works best. Rubber material options available include Neoprene, EPDM, Viton, NBR, Natural Rubberfor manyapplications.From one-way valves used in automotive fuel pumps to delicate valves used in tubing circuits for heart surgery, for soap dispensers, coffee makers, anti- siphoning valves in shower heads, and toys. Neoprene is the best rubber for Ozone sunlight protection, and stops barnacle growth and sea weed build up. Operation staffoperating techniques can also affect whether the slit can be cut well. Generally, the slit should be cut perfectly the first time. It will leave burrs if proceed second cutting.

The slip on model, easily slips over the outside diameter of the pipe, and is clamped on with the clamp(s) supplied with the valve. This will securethe valve to the pipe. As pressure or flow increases, the lips open further, allowing more flow. This feature allows solids to pass unhindered with low pressure loss. 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. 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. 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.Crane BS&U has no direct influence on, or take any responsibility for any working practices employed or depicted in any image(s). Viking Johnson (part of Crane BS&U) manufactures couplings, flange adaptors and associated fittings for the Utilities industries. Viking Johnson cannot make recommendations regarding the pipeline design, which includes all components, intended operational substances, introduced chemical species and materials. Any comments made by Viking Johnson regarding product compatibility apply only to Viking Johnson's product range. Depends on the hardness: generally, dispensing valve with high durometer & hardness will have better restoring forces. 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.

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 rubber used on these valves provides continual corrosion resistance. The outer layers of Neoprene rubberrepel marine organisms which eliminates marine fouling issues. The TF-1 allows installations in such structures and are easily retrofit to existing structures, often replacing failed flap gates, without the need for breaking up the concrete floor to provide bottom clearance.

Styles and Materials

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 original Tideflex design, the TF-2, has a flare on the top and bottom of the valve. It has been superseded by the TF-1 and has been standardised by many consultants and owners. 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.

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 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. We require this information to understand your needs and provide you with a better service, and in particular for the following reasons: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.