Spherical valves are just one of the many valves working in high-pressure applications today in reciprocating pumps. It is a common belief that a valve is a valve and that they are equal regardless of type. While this is true in the sense that all valves allow or inhibit the flow of fluids, there are minute differences that make one valve preferable over another in any application. Let’s take a brief look at the most common types of valves used in reciprocating pumps with some of the advantages and disadvantages of each.Read More >>
Reciprocating pumps are useful in various applications. These specialized pumps have countless uses, but their main use is to pump liquids.Read More >>
Industrial applications that require high-pressure system components often rely on plunger pumps for successful operation. These pumps see frequent use in process technology and cleaning applications.Read More >>
Reciprocating plunger pumps are a type of positive displacement pump that drives liquid at high pressures in a variety of industrial applications. They operate by creating changes in pressure using a moving component known as a plunger which, on its outward motion, draws fluid into the chamber through the suction valve; then on its inward motion, opens up the discharge valve and pushes the fluid out a delivery pipe at a rapid velocity. Working with the plungers are the pump valves, plunger packing and stuffing box components to ensure optimal performance.Read More >>
Pump cavitation is a phenomenon that can wreak havoc on even the most durable and robust pumping systems. Blame is often unfairly cast on the construction of the pump itself. However, most times, cavitation is the result of poor system design, lack of maintenance, and improper understanding of the environmental factors that contribute to pump performance, such as sea level and vapor pressure.
The key to preventing pump damage lies in a sound understanding of a parameter called the net positive suction head (NPSH). To avoid cavitation, the pressure at all points of the fluid must remain above the vapor pressure; in other words, the available net positive suction head (NPSHa) must be sufficiently larger than net positive suction required (NPSHr) at the pump inlet.
The NPSHa is determined by the following formula:
NPSHa = Pa +/- Pg +/- Pz – Pvp – Pf – Pac
Pa = Atmospheric pressure
Pg = Gauge pressure at the supply tank
Pz = Gead or lift pressure
Pvp = Vapor pressure of the liquid at its actual temperature
Pf = Pressure required to overcome friction
Pac = Acceleration pressure
Here, we will look at the various factors that affect the NPSHa value and how they influence cavitation.Read More >>
Triangle Pump Components, Inc. (TPCI) recently trademarked three product names for our reciprocating pump valves and components. These valves and extension rods, all of which meet ASTM and ISO 9001-2015 standards, feature names derived from various origins with significant meanings related to their features and applications.
Below is a closer look at the meanings behind three of our newly trademarked products.
June is National Safety Month—a time when the industrial sector focuses on key issues that can impact employee safety. As the summer months roll in, northern states get hot and southern states get even hotter, so ensuring employees stay safe and cool becomes a concern in facilities nationwide.Read More >>