Angle Seat Valves

Angle seat valves are traditionally a two way valve that is either in an open or close state (on or off). This is achieved by a piston coming down onto a seat usually at a 45 degree angle (hence the word angle seat). This will then create a seal in the flow path effectively blocking it off. The seat on the bottom of the piston can be of different materials, in our case PTFE which gives it a higher working temperature, but can be a whole range of materials including NBR, EPDM, FKM or even metal to metal.

The piston is moved up and down on the seat by a pneumatically operated head on the valve. These can either be double acting or spring return. In our case we utilise spring return whereby air will move the piston open and when this air is exhausted a spring will mechanically push the piston down onto the seat and close the valve. This allows a fail safe position (fail close). A 3/2 valve will be needed to operate the angle seat valve and most commonly these are a 3/2 solenoid valve (either insert the air or exhaust it out).

This depends upon the design of your valve, its usage case, its environment, media and how many times it is cycled. For instance if it is on a clean media, in a clean environment and not cycled regularly the life will be decades. If it is on a corrosive media and in a dry application with a high cycle rate the life will be much shorter. 

As it is a two way threaded female valve a typical install would involve two threaded male nipples into each end of the valve to connect it to your pipe. Our thread standard for these female threads is BSP parallel so a tapered male thread would suit best. Thread tape should be used on the male thread to ensure a bubble tight seal. There is an arrow on the side of the angle seat valve which indicates flow direction. This is typically in an overseat configuration where the line pressure helps apply the seal. In some circumstances you can run the flow direction under seat (eg. where you are experiencing water hammer) but it is not recommended. From there your 3/2 valve will need to be connected to the port on the actuator head. This can be configured multiple different ways however the simplest would be to nipple a 3/2 solenoid valve directly into the actuator itself.

These are used in a very wide range of industries but we commonly see them in the food and beverage and steam industries. This is because they are relatively simple and having a PTFE seat and a stainless steel body they can take higher temperatures and caustic wash downs.

This depends upon where you are based and the freight method chosen. If the express freight option is selected it is usually next day delivery to metropolitan areas in Australia for under 5kg. If free freight has been selected it will go by road freight which can be anywhere from 1 to 10 days depending upon your location. It usually averages 3 days.

All of our products come standard with a 12 month warranty. The good news is we have very strict quality controls and all valves leave our warehouse tested (full material and testing certificates to API598 are available) and inspected so there are rarely any issues.