Duff Tips
Valves
- Butterfly valve information
- Face to face dimensions of flanged iron valves
- Flow characteristics and resistance
- Forged steel valve information
- How to select valves for your service
- Types of solenoid valves
- Valve installation tips
Fittings and Pipe
- Actual outside diameter of tubing
- Copper tubing specifications
- Distinguishing right and left hand closet bends
- Flange and bolting dimensions
- Measuring cleanout plugs
- Pipe outside diameter guide
- Pipe weights and wall thicknesses
- Selection and application of forged steel flanges
- Strainer screens: perforations and mesh
Hangers and Fasteners
- Drill sizes for pipe taps
- Spacing of hangers for pipe
- Tap and drill sizes
- Weight per linear foot for pipe and water
Plumbing
Heating
- BTU & orifice size guide
- Commercial water heater sizing checklist
- Conversion chart
- Ohm's law equation wheel
- Piping guide for mixing valves
Pumps
- Basic submersible pump installation
- How a jet pump works
- How to select the correct submersible pumping equipment
- Sump pump installation guide
- Wire selection chart for submersible motors
Environmental
Water Treatment
- Automatic backwashing filter information
- Chemical feed pump - cooling water treatment
- Commercial water softener information
- Filter applications
- Filtration media data
- Resin comparisons
- Retention tank/chemical feed pump installation
- Reverse osmosis information
- Selecting tank jackets
- Sizing water softeners/filters
- Temperature conversion chart
- Ultraviolet water equipment
610.275.4453