Gate valves are generally utilised as an isolation valve to prevent or allow flow through a pipeline. Gate valves are commonly used within low pressure applications as they do have a tendency to “chatter” at higher pressure flows, they can however be effectively utilised in severe temperature applications.
Gate valves are widely used in a variety of industries due to the robust nature of the design and the flexibility of applications. These valves are generally used in the fully open or fully closed positions, at the fully open position the valve provides a straight through flow meaning that the fluid resistance provided by the valve is small when compared to other shut off valves. Where a large portion of pipeline valving is uni-directional or at the very least has a preferred flow direction, gate valves provide dual flow directions due to the gate sealing mechanism.
Gate valves also offer a shorter face to face dimensions than most other pipeline valves due to the nature of the sealing mechanism, meaning that the gate valve can be utilised where space is limited.
Gate valves can be constructed in a variety of ways to ensure functionality and suitability for the desired service, such construction options include;
- Bolted or welded bonnets
- Pressure seal bonnet
- OS&Y stem
- Non-rising stem
- Oxygen service
All of our valves can be manufactured to suit your desired connections including:
- Raised face
- Ring joint
- Flat face
Isolation valves are important at the best of times, however these valves become even more critical the more severe the service. PAC specialises in supplying high quality valving for severe applications, no matter what you application the sales team at PAC are completely capable of supplying you with the gate valves specific to your unique requirements. We use only the best suppliers from Europe with proven supply records to ensure a long effective design life at the highest level of quality.
Parallel Gates – Knife gate valves, through conduit
Wedge Gates – Split wedge, solid wedge, flexible wedge
Forged and cast materials including cast/ductile iron, carbon steel (including low temperature service), stainless steel, duplex stainless steel, alloys (ie. bronze, brass), exotic alloys (ie. Monel, Hastelloy, titanium)