Since 1935, the Vernay name has been synonymous with solving the toughest fluid control challenges for the world’s leading automotive OEMs and their Tier 1 suppliers.
Our innovations help you to stay ahead of the technology curve.
As the industry’s emission standards, performance, safety and comfort technologies advance, demands on component performance also increase. Vernay chemists are already working to help you stay ahead of the technology curve by developing advanced formulations to meet new fuels and emission levels as well as durability standards. Our global presence aligns easily with your worldwide supply chain and product development requirements.
Your local Vernay engineer coordinates every step of your project, from concept through launch. Further streamline your supply chain by outsourcing test and validation of the full functional component to us. No matter what the mandate — zero defects, exacting precision, aggressive timetables, or saving space by integrating multiple functions into one — Vernay has the specialized knowledge to solve the problem.
Vernay innovations have led to the development of a wide variety of fluid control product families. Each is carefully designed and tested to ensure its effective performance in your most complex applications.
Getting the right fluid control for your application involves much more than simply molding a rubber part. We partner with you to find the right design and material formulation, ensuring that you receive the best component for your project.
The majority of our fluid control components and devices are custom-engineered specifically for unique customer applications. We have a broad product program that includes Flow Controls, Check Valves, Combination Valves, Diaphragms, and complete functional assemblies. In addition, we also stock a large selection of market specific products. We encourage you to contact a knowledgeable product engineer to discuss your application.
Getting the right fluid control for your application involves much more than simply molding a rubber part.
Vernay’s flow controls are engineered to maintain constant volume output with varying inlet pressure. They are either “variable orifices” or membranes that produce a relatively constant flow rate over a range of pressures.
All-rubber valves with dome or spherical shapes that open more easily in one direction than the other. They can be engineered to have two specific opening pressures based on their shape and thickness, and are generally found in a closed position.
Designed to be normally closed when there is no pressure differential across the valve. Designed to open and allow flow at predefined pressure differential. We have a wide range performance available from our family of umbrella products, each with a specific opening and closing pressure.
Poppets feature rounded, flat or truncated tips designed to provide macro flow. Needle valves feature patented conical tips designed to provide micro flow. Both re bonded to either metal or plastic substrates.
Flexible rubber component sits in a pocket in the flow path
As pressure increases, the rubber deforms to reduce the center hole size
Rubber material properties and shape result in constant rate of flow
Typical useful pressure range is 20 to 120 psi (138 to 827 kPa)
Retaining ring should not apply axial force but only prevent misorientation
Each control is designed to work with a specific pocket shape
New center post design for superior performance
Some very low rate controls (drippers) use a flat stock design
Bi-Directional Valves / Seals
Dome shaped all-rubber valves open more easily in one direction than the other
Slit at top of dome opens more easily when pressure is applied on the dome inside
Opening in the reverse direction (pressure outside dome) requires buckling
Can be engineered with two specific opening pressures based on shape/thickness
Flow is always more restricted than with duckbill and umbrella valves
Valve is mounted by the flange the same way a duckbill is mounted
Often used not as a valve but rather as a catheter seal (seals around a probe / pipe)
Duckbill Check Valves
Vernay Duckbill Check Valves are precision-molded, one-piece elastomeric valves that provide reliable backflow prevention at low-pressure differentials. Our duckbill check valves allow free flow with positive differential pressure. With negative differential pressure, backflow is checked. Pressure drop across the valve is a feature unique to Duckbill check valves. They can be designed to operate in a few millimeters (inches) of water to several hundred kPa (psi), depending on valve size, geometry, and compound characteristics. Vernay Duckbill check valves are also designed to start functioning at specific opening and closing pressure ranges, depending on your specifications.
Normally open one-way check valves
Prevent backflow leakage when minimal backpressure is applied
Installed easily into hole and sealed by compressing flange
Molded Strip / Gaskets
Vernay’s continuous molded strip is the result of a proprietary manufacturing process. This process allows for the production of rubber and rubber-to-metal strip in a range of widths and thickness, all held to very precise and close tolerances. Our molded strip is used in some of the most demanding applications in the world. Using a stable and repeatable process, this method yields close tolerance strip in continuous lengths for optimum performance.
Continuous molded strip up to 4.7” wide
High precision thickness tolerances
Supplied in a reel form or punched into custom gasket shapes
Umbrella Check Valves
Vernay Umbrella Check Valves are designed to open and close at a range of predetermined pressures and can be developed for high or low opening pressures. Pressure drop across the valve is controlled by the modulus of material, effective flow area, the amount of pre-load on the sealing edge, and the thickness of the umbrella skirt section. Vernay’s lightweight Umbrella check valves allow flow in one direction and check flow in the opposite direction. They are self-actuating, easy to assemble, and unaffected by orientation, so performance is the same even if the valve is mounted upside down.
Normally closed one-way check valve
Open in pre-determined pressure range
Installed into flat seat with flow holes underneath
Vernay offers ground elastomeric balls with excellent surface quality and good sphericity without parting lines. V-Ball® elastomeric balls are small, versatile, resilient spheres used in applications such as simple check valve components with spring support, indicators, or as a shuttling valve. V-balls® provide the flexibility to enhance sealing, are lightweight, and can be designed for high abrasion resistance. They are compliant enough for low-pressure sealing applications and resilient enough to withstand severe vibration and impact. V-Balls® are non-magnetic, corrosion resistant, and economical; requiring no lubrication during use, and are perfect for high-speed assembly because no orientation is required. Vernay’s solid V-Ball® elastomeric spheres are finished in a proprietary manufacturing process that provides improved diameter and sphericity as well as smoother, more uniform surfaces. V-Ball® products are finished to maintain such close tolerances that flash lines are eliminated.
High pressure and high frequency cycling
Medical and food grade materials
Silicone materials as low as 30 durometer
Variety of colors for indicator valves
Electrically conductive materials
Variety of specific gravities
An umbrella can be combined with a duckbill to provide a three-port valve which has an inlet, an outlet, and a port which articulates with a common variable volume. This is a convenient way to make a pump. When the volume increases, fluid is drawn in through one valve (usually the umbrella) and then when the volume decreases, fluid is pushed out through the second valve (usually the duckbill). The umbrella can have an opening (or cracking) pressure which is chosen to prevent flow due to head height at the inlet.
Vernay Diaphragms are engineered to provide quality performance at specific pressures, even under the most demanding environments. Because of their unique design, Vernay Diaphragms perform complex tasks in mechanical, fluid, and gaseous applications easily and economically. They provide optimum sensitivity and the strength to withstand significant pressure change. Vernay specializes in convoluted diaphragms, thin wall diaphragm, rolling diaphragms, general diaphragms, servo action diaphragms, and inserted diaphragms.
Used to convert pressure to force/stroke or vice versa
Provides a fluid (gas or liquid) seal between the two sides
May have a rigid center section to give more “piston-like” action
Total stroke needed impacts the design of the convolute
Material may be critical for chemical attack, gas permeation, and life
Explore our streamlined process for design and development for your unique needs.
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Wax thermostatic element
The wax thermostatic element was invented by Sergius Vernet (USA) in 1936. The principal application of the wax element technology is for the production of automotive thermostats. The first applications of this technology in the plumbing and heating industries were in Sweden (1970) and in Switzerland (1971).
Wax thermostatic elements permit the transforming of thermal energy into mechanical energy. Their working principle is based on the large increase in the thermal expansion of waxes when they pass from the solid to the liquid state. The range of application includes but is not limited to the automotive industry, military and civil aviation, domestic heating (eg. thermostatic radiator valves), plumbing, industrial, fire, and agriculture.
Advancements in automotive energy and drive trains continue to drive a need for more complex air flow systems and solutions. Battery packs in electric-powered vehicles are stored in stable protective casings that prevent damage from water and other roadway elements. These battery packs require venting and pressure compensation to avoid damage to the battery pack. In response to these challenges, Vernay developed the Vernay VoltaVent™ solution.
The Vernay VoltaVent™ fulfills three main functions
high flow thermal runaway safety valve with re-sealing capability
pressure equalization to prevent unwanted pressure buildup in the battery pack
pressure management within a predefined “protection zone”, there is no exchange of air (humidity), resulting in a significant reduction of moisture inside the battery pack.
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