Sea Level Basics for Reciprocating Pumps

Posted by Sam Kelton | October 17, 2018

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

Where:

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.

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Insights into Our Newly Trademarked Products

Posted by Sam Kelton | October 1, 2018

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.

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7 Questions to Check Off When Inspecting for Pump Cavitation

Posted by Sam Kelton | June 6, 2018

Cavitation — the formation of bubbles in a liquid — is the No. 1 problem encountered when operating plunger pumps. Cavitation can cause a remarkable amount of damage to pump components and the pump as a whole, resulting in costly repairs, increased labor needs, and extensive downtime.

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Reciprocal Pumps in the Oil and Gas Industry

Posted by Sam Kelton | May 8, 2018

Reciprocating pumps are used to transport both clean and abrasive fluids. These pumps are more efficient and robust than their centrifugal or rotary counterparts, making reciprocating pumps the ideal choice for the oil and gas industry.

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How to Avoid Pump Packing Failure

Posted by Sam Kelton | April 18, 2018

Offering great versatility, mechanical seals are commonly employed to seal pumping equipment. However, there are still a number of pumps and devices that make use of compression packing for sealing purposes. Such pumps are used across a wide range of industries, including pulp and paper manufacturing, power generation, and water treatment, and play a critical role in supporting various industrial processes.

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A Closer Look at Net Positive Suction Head

Posted by Sam Kelton | February 20, 2018

To put it simply, pumps work based on the principle of pressure difference: Fluids flow from regions of higher pressure to regions of lower pressure, and pumps facilitate fluid transfer by creating a pressure difference, or pressure head.

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Delrin® Vs. Titanium Plate Valves

Posted by Sam Kelton | September 27, 2017

Comprised of a disc and a seat, plate valves are an essential component in many types of pumping operations. The disc moves between the seat and retainer in relation to the variations in fluid pressure on its sides, thereby controlling the pressure flow. Other plate valve components include the bolt, the springs, and the plate. 

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Specialty Packing Operations at TPCI

Posted by Sam Kelton | May 3, 2017

Plunger packing plays an integral role in sealing pumps and maintaining adequate downstream pressure — a critical condition for applications such as water hauling or water transfer pumps. In plunger pumps or pumps with extension rods, the packing is held stationary inside a stuffing box; in piston-style pumps, the packing sits in a groove.

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New Warehouse Improvements

Posted by Sam Kelton | March 2, 2017

Thanks to the leadership of Cleburne Shop Manager Jon Edson, Triangle Pump Components, Inc. has been able to
make great strides in warehouse productivity and performance.

Mr. Edson has invested his time not only in his employees, but also in the advancement of our warehouse management solutions.

His diligent work has helped to greatly improve the shipping and receiving, inventory, and manufacturing departments at TPCI.

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Superior Pump Components for Reciprocating Plunger Pumps in the Oil and Gas Sector

Posted by Sam Kelton | February 16, 2017

The oil and gas industry is a major contributor to the U.S. economy as it affects a number of vital industrial sectors. Reciprocating plunger pumps and their performance play a crucial role in the oil and gas industry.

These pumps aid in the extraction of oil and other natural resources from underground formations for the Nation’s petroleum industry.

Reciprocating pumps and pump components such as valves and plungers are well suited for this role. The valves and plungers used in these pumps must be sturdy and reliable as they are critical to the success of these processes.  

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