Pump and coating technical library
Free engineering guides from PCT on pump performance, system head curves, NPSH and cavitation, metering pump installation and RCC corrosion protection systems, written to help engineers and operators select, install and troubleshoot process equipment.
How do pumps and piping systems behave?
Guides to pump performance and system design: how flow, head and speed relate, what NPSH means and how to prevent cavitation.
What is a system head curve and how does it set the pump operating point?
A system head curve shows how much head a piping system needs to move each flow rate. It equals static suction and discharge head plus friction...
How do the pump affinity laws predict flow, head and power at a new speed?
The affinity laws predict centrifugal pump performance at a speed other than the one on the published curve. With a constant impeller diameter,...
What is pump specific speed and how do you calculate it?
Pump specific speed is a design index used to classify pumps by impeller type and proportion. It is calculated at the best efficiency point from...
How do you calculate NPSH available and compare it with NPSH required?
NPSH available is the absolute pressure head at the pump suction above the liquid's vapor pressure: surface pressure head plus static suction head,...
What causes pump cavitation and how do you prevent it?
Pump cavitation happens when pressure at the impeller eye falls to the liquid's vapor pressure, so the liquid boils and forms vapor bubbles. The...
How should metering systems be installed?
Practical guidance for chemical metering pumps, pulsation dampeners and packaged process systems.
How do you design a trouble free metering pump installation?
A trouble free metering pump installation needs enough suction pressure to cover NPSH required, backpressure at least 5 psi above suction pressure,...
What pulsation dampener fits an air operated diaphragm pump?
The Blacoh AODDampener is a pulsation dampener made for air operated double diaphragm (AODD) pumps. It has a 316L stainless steel body, a PTFE backed...
Custom fabricated pump systems built to your specifications
PCT builds custom fabricated pump systems to customer design specifications. Each system includes the pump, controls and fabrication, CAD drawings...
How do you choose and install RCC corrosion protection?
Guides to RCC (Rema Corrosion Control) linings, coatings and flooring systems, from choosing a system to installation.
How do you choose an RCC flooring, lining or coating system?
To choose an RCC (Rema Corrosion Control) system, first decide whether you need flooring, a lining or a coating, then work through that checklist....
How do you choose the right corrosion resistant tank lining?
Choosing an RCC (Rema Corrosion Control) lining starts with every chemical present and its concentration, using pH only as a last resort. Then define...
How do you choose the right corrosion resistant coating?
Choosing an RCC (Rema Corrosion Control) coating starts with the chemicals and their concentrations, the operating temperature and the type of...
How do you choose the right chemical resistant floor?
Choosing RCC (Rema Corrosion Control) chemical resistant flooring depends on the chemicals and how they reach the floor, thermal shock from hot...
How are RCC corrosion resistant linings, coatings and floors installed?
A successful RCC (Rema Corrosion Control) installation starts with a substrate designed for corrosion proofing, then relies on trained installers...
Have a technical question?
Call 302-655-3490 or send your operating conditions and the PCT team will help.