stvvalves

  There are many different   types of valves   available for different applications. With so much choice it can be difficult to decide which valve is most suitable for your application. In this article, STV Supplies explores the merits of ball valves versus globe valves. WHAT IS THE MAIN DIFFERENCE BETWEEN BALL AND GLOBE VALVES? The main difference between ball and globe valves is the way they close. Ball valves have a stem and ball, which turns horizontally, and are commonly referred to as “rotational” valves. Whereas, globe valves have a stem and plug, which strokes linearly, and gives them their other name of “stroke” valves. Ball valves are best suited to applications requiring on/off control without pressure drop. While globe valves excel at regulating flow. HOW DOES A BALL VALVE WORK? Ball valves are designed with a ball inside the valve. A ball valve is a form of quarter-turn valve which uses a hollow, perforated and pivoting ball (called a “floating ball”) to cont...

Model:Y565Y-2500LB-WC9-DN300 High temperature and high pressure globe valve opening and closing parts are plug shaped valve, sealing surface flat or cone, the valve flap along the center line of the fluid for linear motion. The movement of the stem form, there is lift rod type (the stem lift, hand wheel is not up and down), but also the lifting of the rotating bar type (hand wheel and the valve stem rotation, the nut is located in the valve body). Structure characteristics: 1 valve in the cavity with the pressure from the tight seal structure, the better the sealing performance. 2. The valve flap and valve seat sealing surface of the Stellite cobalt based alloy spray welding and become, wear-resisting, withstand high temperatures, corrosion resistance, scratch resistance, to be good at it. 3 high temperature creep design. 4 the valve stem adopts the whole forging structure, it has good corrosion resistance and scratch resi...