Thermoplastics Fluid Valves
Proper Valve Selection is Key
Valve selection can be the anchor of a properly designed piping system. Too much pressure drop and one may not get enough flow through the system or a pump may overload. Conversely, a valve that sticks open could result in the waste of expensive chemicals or flood an area. Ryan Herco has a wide selection of valve and the expertise to apply them to the most difficult applications.
Ball Valve are ideal for smaller size lines and have3 a very low pressure drop. They are inexpensive, easy to actuate, come in a variety of different materials and connections types, and are widely used. They are not ideal for liquids that coat or can crystallize, are abrasive, or for throttling applications. Ryan Herco has a wide variety of Manual Ball Valves along with Pneumatically Actuated Ball Valves and Electrically Actuated Ball Valves.
Diaphragm valves are more expensive than their ball valve counterparts, yet have several advantages. Only the diaphragm and the body come into contact with the liquid so they are ideal for ultrapure, abrasive or coating chemicals. They can also be throttled down to control flow or pressure accurately. Ryan Herco has a number of options available so that you can choose the diaphragm valve that is ideally suited for your application. Actuated diaphragm valves are also available.
Butterfly valve are most commonly used in large diameter pipes and are rugged, able to handle a variety of different applications. These valves are flanged into the line and range in size from 2” to 48” in most materials. They can be provided either manual (lever handle) or actuated (pneumatic or electric).
Solenoid valves are an electrically operated valve which opens or closes when power is applied or taken away. They are ideal for on-off applications, batching, or level filling and emptying. These valves range from 1/8” to 2” and can be provided in many different 2-way, 3-way and 4-way control options. Ryan Herco offers the Type 623 Solenoid Valve by Burkert, along with other solenoid valves in our portfolio of world-class manufacturers so that you are sure to find the right option for your application.
Plastic ball valves are ideal shut-off valves for aggressive media. With increased automation in piping systems, the need for control functions also increases. The “characterized” ball of the Georg Fischer Type 546 Control Ball Valve allows for very small pressure loss in the open position and excellent flow control in both manual and actuated versions. Contact Ryan Herco for more information on the +GF+ Type 546 Control Ball Valve.
Metering valves are often used when precise flow control is needed these valves are designed with a special V-notch and have the ability to operate with a 180° turn of the handle. This metering ball valve has a built-in scale that indicates the degree of opening and is able to provide a linear flow curve. Click here for additional information on metering ball valves.
Check valves are used to prevent back flow and to maintain pump prime. There are three primary types of check valve: ball/cone, horizontal swing and wafer.
Ball/cone check valves rely on a ball/cone which floats in a chamber when the process flow in one direction but will block the valve orifice when the flow reverses. These valves are typically available in a variety of materials up to 4”
For larger size lines, horizontal swing check valves are designed to be used in either a vertical or horizontal position. Positive flow shutoff is achieved by means of a weighted or spring assisted disc.
Wafer check valves act in the same way but have a narrower profile and a lower Cv value.