What is a Pbv valve?
PBV valves are manufactured custom ball valve solutions for high performance applications. These valves are made to exceed difficult oil and gas industry requirements.
What is PPS valve?
An excellent application for PPS is a pressure vacuum relief valve. Such valves are used to protect systems against positive and/or vacuum overpressure, prevention of air intake, evaporative losses of product, blanketing product losses, and containment of odorous and potentially explosive vapors.
What is the difference between floating ball valve and trunnion ball valve?
A trunnion ball is attached and centred inside the valve body through both a top shaft -the valve stem- and a bottom shaft – the trunnion. A floating ball is attached to the valve body only through the valve stem. As a result, the floating ball ”floats” in the valve seats.
What is trunnion mounted ball valves?
A trunnion mounted valve means that the ball is con- strained by bearings and is only allowed to rotate, the majority of the hydraulic load is supported by the Sy- stem constraints, resulting in low bearing pressure and no shaft fatigue.
What is the function of FCV?
A flow control valve (FCV) determines the required flow rate for the fluid in a pipe. A pressure reducing valve (PRV) controls the pressure at the end of a pipe.
What is floating ball valve?
Floating ball valves are the most common type of valve used in industrial piping systems. These valves are designed so that as the seats begin to wear the pressure from the media flowing through the valve will force the ball against the downstream seat to maintain a tight seal.
What valve that opens by lifting a round or rectangular wedge out of the path of the fluid *?
Gate Valve
Gate Valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate or wedge out of the path of the fluid.
What is FB in valve?
The “Full port” (FB) type features a bore size (the hole of the ball) matching the bore size of the connected piping. Full port ball valves minimize the pressure drop that is generated by reduced port valves but they are of course more bulky, heavy and expensive.
What does a trunnion do?
Trunnions are precision ground bearing mounts that allow you to mount a fixture to the surface, usually on a riser, and will allow full rotation of the fixture and parts placed on it.
What is HCV valve?
The HCV valve is a quarter-turn valve with a segmented sphere or Hemi and a top entry cartridge design that fits within the valve housing while supporting opposed upstream and downstream sealing components. The Hemi rotates around a stationary core which directs the flow through the valve.
What causes a pressure drop?
Pressure drop results from the friction caused by fluids rubbing against the piping components and the interior walls of a piping system.
Which is better ball or gate valve?
Ball valves are more effective at forming a tight seal and have more reliability and longevity than gate valves, but tend to be more expensive. They are often used for shutoff and control applications. Because ball valves can open and close immediately, they are more likely than gate valves to cause water hammer.
What is bonnet in ball valve?
Bonnet. You’ll see the bonnet in the opening of the ball valve’s body. Bonnet is used to cover this opening and just like the body, it serves as a pressure boundary at the second stage. Bonnet holds the ball and the stem assembly in place and its cap is fastened to the body to do the task.
What is a trunnion seal?
Chesterton’s Kaplan Turbine Runner Blade Trunnion Split Seal has a pin and lock design that keeps the turbine motion from pulling the split seal apart and also uses load pressure to join cut ends.