The rainfall reference chart gives the maximum amount of rainfall in inches per hour of the hypothetical "worst storm in the past 100 years," which has a two percent chance of occurring in any given year

WaterWorld, LLC

Clamping Collar/Gravel Guard*Portals Plus die-cast aluminum epoxy coated Gravel Guardand Clamping Collar is grooved for positive drainage and insures a maximum hold on roofing materials.

Watertrade publications

The TB820D is a next-generation digital Turbidity analyzer and connects to FLXA402T. TB820D turbidity analyzer equipped LED as a light source, flat window structure cell, new diagnostic functions, ultrasonic cleaning, etc., and they will reduce your maintenance time dramatically.

Improving potable water quality, safety, and sustainability of the drinking water supply are our mission for the future. To achieve them, measuring water quality accurately and contentiously are very important. The measurement of turbidity in potable water facility and distribution line is a vital component of ensuring safe and clean drinking water. FLXA402T/TB820D right angle scattered light turbidity analyzer is used to control and monitoring drinking water quality. WHO says in "Guidelines for drinking-water quality" that "to ensure effectiveness of disinfection, turbidity should be no more than 1NTU and preferably much lower. Large, well-run municipal supplies should be able to achieve less than 0.5 NTU before disinfection at all times and should be able to average 0.2 NTU or less." FLXA402T/TB820D can measure from 0-2 NTU to 0-500 NTU with excellent accuracy and have been contributed to healthy life. To achieve continuous measurement, FLXA402T/TB820D equipped useful functions, for example diagnostics, automatic cleaning and automatic zero calibration. These functions help to improve water quality control.

Water Quality ProductsMagazine

Expansion Coupling**Portals Plus flexible Expansion Coupling allows for expansion and contraction that enables the installer to connect the drain to various types of piping (two stainless steel clamps included)

Watermagazine

Yokogawa provides optimum solutions to improve the reliable operation of water treatment plants. These solutions include sophisticated technologies, unsurpassed product quality, and extensive application know-how throughout the lifecycle.

Dome Strainer*Portals Plus Dome Strainer is epoxy coated die-cast aluminum for longevity.  The Dome Strainer bolts securely to clamping collar.  (Dome Strainer also available in ultraviolet-stabilized polyethylene)

Waterworldproducts

Watertreatment magazines

Yokogawa's Turbidity analyzers have been providing reliable turbidity measurement in Water Treatment Plants since 1959. The TB820D and TB830D are next-generation digital Turbidity analyzers that connect to FLXA402T. These are equipped with LED and new diagnostic functions, etc. to significantly reduce maintenance time.

Water resources are finite, and therefore contributing to a sustainable water cycle is one of the Sustainable Development Goals (SDGs). Yokogawa has been providing advanced digital control solutions for the stable supply of clean and safe water, wastewater treatment for protecting the water environment, water loss management and optimization of plant operation for reducing CO2 emissions and running costs. With our leading-edge technologies, dependable products and extensive expertise and experience of diverse water projects around the world, we work with you to provide sustainable water solutions that boost your business and add value throughout the plant lifecycle.

This turbidity analyzer uses a pressurized head tank to eliminate air bubbles, which are a major error factor in the measurement of low turbidity levels.

Drain Bowl*Portals Plus Drain Bowls are available in 3", 4" and 6" sizes in Cast Iron; Cast Aluminum; Ultraviolet-stabilized, injection-molded, white PVC; and injection-molded, black ABS.

WaterWorld Group

Extension**Portals Plus Extension is a 6" length of schedule 40 pipe that extends the drain bowl down below the deck, to accommodate the expansion coupling (for PVC and ABS Plus Packsonly).

The FLXA402T is the next-generation analyzer for the Turbidity detector and Chlorine sensor. The FLXA402T can connect up to two sensors of Turbidity, Chlorine, pH, and Conductivity, with digital communications availability.

Water qualityAnalyzer

The full-flow capacity of a drain is not realized until the water reaches approximately 2.5 inches above the inlet in a four-inch drain and 3.5 inches in a six-inch drain.

When placing roof drains it is good design practice not to locate the drains more than 50 feet from the roof perimeter or more than 100 feet apart.

The potable tap water distributed to individual households is originally produced from raw water taken from rivers or underground springs. At water purification plants, chemicals are injected into the raw water to produce flocs that serve to absorb hazardous substances in the raw water and allow them to be deposited and filtered out. Chlorine is then added as a disinfectant to the treated water. A variety of water quality measuring instruments, including turbidity analyzers, residual chlorine analyzers, and pH meters, are used in water purification plants. This application note focuses on turbidity analyzers, which are used to verify that filtration systems are operating in excellent condition. The FLXA402T/TB820D turbidity analyzer continuously measures post-filtration turbidity in order to achieve the required turbidity control value of 0.1 mg/L.

The sizing of roof drains must be large enough to quickly carry away all water entering the roof drains.Any blockage or restrictions in this system may result in water backing onto the roof membrane.  You must check horizontal pipe capacity.  For example:a six-inch drain attached to a six-inch horizontal pipewith 1/4-inch slope will only carry 315 gallons perminute (gpm) instead of 563 gpm in the six-inchvertical drain pipe.