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WattsBackflowpreventer

Kitchen and lavatory faucets, constructed within the US, with integral or auxiliary spray heads, generally do not need additional backflow prevention devices.

Hint for owners with irrigation systems: make the testing part of your spring start-up contract. The irrigation firms may be able to procure the most favorable pricing due to their ability to deal in volume with plumbing services firms.

Our Water Softening Systems are broken down into domestic and commercial. Domestic Water Softeners are contained in compact cabinets that can be installed under ...

Cross-Connection – is the physical connection between the potable (drinking) water system and an “end-use” (water utilizing fixture, equipment, or process) where a potential water contaminating hazard exists.

WSSC Water started the Cross-Connection Control Program to keep the drinking water safe for everyone. Unprotected or improperly protected cross-c...

Flomatic Corporation manufactures silent check valves and globe-style silent check valves. The silent check valves are built with a cast iron body and epoxy coating, and feature a flanged connection ANSI 125. The globe-style check valves are available in 2" to 24" sizes and used for regulating flow in a pipeline.

... parts for cable pulling system products they need for their projects ... Tools & Instrumentation ...

Crispin-Multiplex Mfg. Co. produces globe and wafer silent check valves. Globe silent check valves can be mounted vertically or horizontally, and are available in sizes from 2-1/2" through 36". Wafer silent check valves are available in sizes from 2" to 10" and are for potable water or drip tight applications.

Modern plumbing fixtures generally have built-in backflow protection. For instance, a faucet spout terminates above the flood rim level of the sink or tub. So if the sink or tub is full of dirty water or worse, backed-up sewage, there is no possible way for a backflow because of the air gap created by the elevated spout. Toilet fill valves, clothes washers, dishwashers, and refrigerator/ice makers also employ some type of built-in air gap as their method of protection.

2024517 — Pump: The pump is the heart of the system. It moves hot water from your water heater through your pipes and back again, keeping the water in the ...

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Watts Water Technologies Inc. manufactures cast iron silent check valves in 2" to 10" sizes, and cast iron silent check valves with flanged ends. The flanged end check valves are available in sizes from 2" to 6". Both silent check valves types feature maximum pressure of 200 psi, and are used in commercial and industrial HVAC applications.

DFT Inc. manufactures three series' of silent check valves, each offering over 50 models to choose from. The PDC Series is specially designed for use on the discharge side of reciprocating air or gas compressors. The GLC Series are spring-assisted, center guided, in-line, flanged silent check valves.

Have “non-testable” backflow devices replaced at the intervals described above. Have “testable” backflow assemblies tested yearly and rebuilt or replaced as needed.

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Backflow – is the undesired reverse flow of contaminants into the potable water from an “end-use” hazard and is typically driven by common, but unfavorable, hydraulic events in either the public or a private water distribution system.

Consult with a licensed plumber regarding proper connection and protection requirements or contact a WSSC Water inspector by phone or email: 301-206-8886 or plumbingplansreview@wsscwater.com.

Colton Industries manufactures seven types of silent check valves: cast iron wafer body, cast iron flanged body, cast carbon steel wafer body, cast carbon steel flanged body, cast stainless steel threaded/socket weld body, cast stainless steel wafer body, and cast stainless steel flanged body. The various silent check valves are available in sizes from 2" to 24", 2" to 16", 2" to 12", and 1/4" to 4".

8 Jan 2022 — I'd suggest you just keep working the valve back and forth, on and off. Eventually you will probably get it to shut off completely. If they aren ...

24 July 2024 — A backflow preventer is a device that stops water from flowing backward into the public water supply. It makes sure that water flows in one ...

In residential applications, the normal way to protect the drinking water system from the hose, and its uses, is to outfit the hose bibb (spigot/valve) with a vacuum breaker. Hose bibbs are available with integral vacuum breakers or vacuum breakers can be purchased separately and screwed directly onto the outlet threads of the bibb. In this case, the vacuum breaker, in turn, has hose threads to connect the hose to. Vacuum breakers are very inexpensive but provide a very good level of protection against backflow.

Every hose bibb, regardless of age or usage, must be outfitted with a vacuum breaker meeting the product standard/listing ASSE 1011 or ASSE 1019.

Backwater valve

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THE BACKFLOW ASSEMBLY SHALL BE PROTECTED. FROM FREEZING AND FLOODING. 3. THE DCVA MAY BE INSTALLED ABOVE OR BELOW GROUND PROVIDED ALL CLEARANCES ARE. MET. 4 ...

If you're experiencing a water emergency, such as a broken water main, or a sewer emergency, report it using our mobile app, email the Emergency Services Center, or call us at 301-206-4002.

Series 009 Reduced Pressure Zone Assemblies prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or ...

Since their inception, residential fire sprinkler systems have been supplied with water by three different piping arrangements. The following describes the details of each variation:

NIBCO manufactures cast iron, silent check valves for hot and cold water, HVAC, steam, gas, and other utility services. The company's line of silent check valves types include twin disc grooved style, flanged globe style, wafer style, twin disc wafer style, and flanged globe style.

PVB may be winterized in place; RP’s must be removed and placed in a warm storage area. Both assemblies require their annual test at the time of spring seasonal start-up.

Not a very common item for any household and with the advent of digital photograph, photo developers and sinks are certainly a rarity these days. But when connected to the water distribution system, backflow prevention is a must. If connected to a tank or sink, a “non-testable” device (standard no. ASSE 1012), may be utilized. If chemical injection is present or an automatic developer is used, a “testable” assembly (standard no. ASSE 1013), must be installed and special provisions for drainage need to be considered and yearly testing by a plumber is mandatory.

Specialty Valves & Controls distributes DFT-brand silent threaded check valves, silent wafer check valves, and silent flanged check valves that are used in liquid, gas, or stem applications.

- Automatically maintains a constant water seal in floor drain traps. - Prime Rite automatic pressure drop activated trap primer valve will prime up to 2 ...

Understanding and respecting the risk of water contamination is a great start, when in doubt, seek help. Basic guideline: every water outlet needs some form of protection; get to know what is needed.

Installation, repair, replacement and/or annual testing must be performed by a plumbing services firm (licensed plumber). Their plumbers must be at least of the “Journeyman” license level and also possess a separate cross connection technician certification. Do not be afraid to ask for proof!

Mueller Steam Specialty manufactures standard wafer silent check valves and globe-style silent check valves comprised of cast iron, bronze, carbon steel, or cast stainless steel. The valves are available in a number of ratings including class 125, 150, 250, 300, 600, and 1500. The company also produces screwed-end and cast iron/cast bronze, compact wafer types.

2 Pin connector to suit various Toyota/ Denso Vacuum operated solenoids.

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The Metraflex Company produces globe-style silent check valves, wafer-style silent check valves, FM approved globe-style silent check valves, and FM approved wafer-style silent check valves. The globe-style check valves are available in sizes from 2-1/2" to 30" and 2-/12" to 12". The wafer-style valves come in sizes from 2" to 10" and are rated to 125lbs. and 250lbs. All the check valves activate at 1/4 and 1/2 psi.

FEBCO 765. SIZE. 1/2", 3/4", 1", 1 1/4", 1 1/2", 2". DESCRIPTION. The Model 765 is a pressure vacuum breaker assembly. Production began approxi- mately 1975. It ...

Automatic irrigation systems pose a significant threat to the drinking water system. By their nature, sprinkler heads may reside in a pool of yard/animal waste, pesticides and/or fertilizers. And because the supply lines are under constant pressure and flow, and controlled by underground control valves, a typical vacuum breaker is not an appropriate form of protection against backflow. There are two types of backflow prevention assemblies allowed:

Where water is connected to a heating system boiler as a make-up water supply, it must be protected by a dual check valve with integral vent (standard no. ASSE 1012). This device is considered “non-testable” and must be rebuilt or replaced every five years. If chemicals are added to the heating water system (this is not common), an ASSE 1013 must be installed and special provisions for drainage need to be considered and yearly testing by a plumber is mandatory.

Because of their portability and universal ease of connection, general purpose/garden hoses pose one of the greatest risks for backflow occurrences. In addition, there is a general complacency (underestimation of hazard level), with what hoses are connected to or with what they are left submerged in.

Sureflow Eqiupment Inc. designs and manufactures cast iron, silent check valves; stainless steel, wafer silent check valves; and cast iron, globe silent check valves. The three check valve types are available in 2" through 12" sizes, and 2" through 24" sizes. Used for municipal water systems, industrial class HVAC, industrial piping systems, and irrigation systems, the check valves feature vertical or horizontal installation and pressures of 150 psi, 200 psi, 275 psi, or 285 psi.