Some of our standard valves are rated for water service but water is tricky – so it “depends!” Where appropriate we will recommend and specify the correct water service (WS) options to assure trouble-free system performance. Contact Versa’s friendly expert Technical Sales team and be ready to discuss the type of water in your system, your operational requirements and the type of valve actuation you will be using. They will quickly determine your needs and advise on the correct valve options for your water service application. The WS option is limited to Versa V Series and T Series.

Absolutely. Many if not all Versa valves are rated for natural gas applications. Please note however, Versa also offers a natural gas service option to enhance the performance and improve product life in a natural gas service application.  Contact Versa’s friendly expert Technical Sales team and ask about the “NGS” suffix details. Available on Versa V Series, B Series, V-316 Series and C-316 Series.

Yes. Versa provides a third party SIL certificate which indicates they are “SIL 3 capable”. The certificate provides the necessary information to calculate your individual SIL rating for your Safety Instrumented System (SIS) package. SIL 3 Capability Certs are available for our B-316, C-316, C-Aluminum, D-316, E-Series, EQE. QE, V-316, V Series and T Series. Each SIL 3 capable certified series has its own certificate and report. Versa SIL 3 capability certs are available from your distributor or directly from Versa’s friendly expert Technical Sales team on our Technical Support page.

Versa patented the Anti-Extrusion Principal which is an O-ring sealing arrangement we invented for our valves. O-ring seals offer great advantages in valve design. They make valves rugged and reliable and are simple to assemble and maintain. Because there are readily available standard and custom O-ring seals, there is a wide choice of sealing materials, which is all great news.

However, when O-rings are used as a dynamic seal sometimes the internal forces can cause the seal to move or jump. When this happens the seals can become extruded or “nipped” which leaves small defects on the seal material. Our Anti-Extrusion Principle offsets the disadvantages of using O-rings by using a patented sealing arrangement in our O-ring packed valves. Basically, Versa seats O-ring seals within the valve body or on the valve plunger so the flow of the media or the pressure differential through the valve helps seat the O-ring. This keeps the O-rings in place which reduces the risk of extrusion and thereby enhances valve performance and life.

Force is required to shift a pilot or solenoid-pilot valve. The shifting force must overcome the opposing force (often a spring holding the valve in one position.) The valve specification includes a minimum force required to force the valve to shift. The physical force achieved by a pneumatic valve is created when the pressurized media acts on the surface area of the pilot piston, creating force. The force is measured by the pressure (of the media) multiplied times the surface area on which the pressure is applied (F=P x A). The minimum pilot pressure is minimum amount of pressure required to create a force greater than the opposing force in the device, thus allowing the control device to function.

The advantages of the solenoid-pilot design are high flow capability, reliability and low power consumption. The disadvantage is that it requires a minimum pilot pressure to shift the valve plunger. The advantage of a direct acting solenoid is that there is no minimum pressure requirement. The disadvantages are limited flow capability and high power consumption.