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Bobby Rogers was here yesterday and was very polite and kind. He did a great job getting the pipe unclogged. He does a good job representing your company. Downside, ... found out I could have saved about $100 with another company. I was charged $211 for a simple Roto Rooter job.

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Trusted and recommended since 1935, Roto-Rooter is the premier provider of plumbing and drain cleaning services in Woodland, CA. Homeowners and businesses depend on Roto-Rooter 24 hours a day, 7 days a week. Our specialty is emergency services.

An electric solenoid valve has a hydraulic closure rate of 1.5 seconds. The dynamic pressure (system operating pressure) at the time of closure is 65 psi at a velocity of 5.5 fps. The longest length of uninterrupted piping between the source and the valve is 250’.

t = Time during which the velocity was reduced, in seconds (valve closure times are typically available from the manufacturer of the valve being used)

When designing an irrigation system, it is necessary to calculate the water hammer characteristics of the piping system to ensure that excessive back waves to not damage or reduce the life expectancy of the piping system and joints.

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L = Length of straight pipe between source and point where reduction of velocity occurred, the longest section, in feet (straight pipe means no tee’s or ell’s)

Velocity of Flow is the speed of water moving in a closed piping system. As water moves through a piping system pressure is exerted on valves, fittings and changes of piping direction, as the speed of the water increases, the pressure exerted on the piping system and fittings increases.

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Although the quickest and easiest way to determine pipe velocities is with a velocity chart available from pipe manufacturers, it is also helpful to have the formulas available to determine flow velocities in the field.

When water doesn’t stay where it’s supposed to, our Woodland water damage restoration crews are at-the-ready to handle flooded basements, broken pipes, overflowing tubs and toilets, heavy rains, sewer line backups and other water issues. Roto-Rooter’s IICRC certified water cleanup professionals are available 24 hours a day, 365 days a year and will respond quickly to minimize damage to your property.

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As water moves through the piping system it develops a force which acts upon the valves, fittings and any change in piping direction. Because water is non-compressible, the force increases as the velocity of the water is suddenly reduced, causing a back pressure wave or "water hammer." If the water hammer pressures are substantial, the back pressure could rupture pipe and blow apart fitting joints. The back pressure wave usually occurs as a result of a fast closing electric solenoid valve.

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Designing an irrigation system with these two factors in mind will ensure the long term integrity of the piping system, fittings and joints.

The formula below can be used to calculate the total pressure developed in a closed piping system by using the velocity of the water, operating pressure and time of the velocity reduction.

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Roto-Rooter plumbers in Woodland provide plumbing maintenance and repairs as well as clogged drain cleaning. Roto-Rooter's Woodland plumbers offer residential and commercial plumbing services that customers depend on for all of their local plumbing needs.

To ensure long term reliability of the piping system, fitting and joints, the piping system should always be designed to ensure that all velocities remain below a specified velocity measured in feet per second (fps)—typically between 5-7 fps. Exceeding 7 fps will reduce the long term operating reliability of the piping system and can cause premature failure of fittings and pipe joints.