Napa check valve

Napa check valve DEFAULT

ソニー ハンディーポータブルラジオ ICF-P26

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ソニー ハンディーポータブルラジオ ICF-P26




●小さく携帯性に優れたFM/AM2バンドハンディポータブルラジオ。分かりやすいアナログチューナー。赤いランプでベストチューニングを確認できる同調インジケーター付き。ワイドFM対応。
●外寸(幅)(mm):69.5
●外寸(奥)(mm):38
●外寸(高)(mm):119
●質量(g):(電池含)180
●使用電池:単3形アルカリ乾電池×2本(付属)
●付属品:イヤホン、乾電池
●保証期間(年間):1

広告文責:グループ株式会社
050-5212-8316

ソニー ハンディーポータブルラジオ ICF-P26

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Sours: https://www.isvor.com.br/site/quem-somos.php?laboratories12/af2886650.htm

Backflow FAQ

There are six common types of piping or mechanical assemblies which are considered to be backflow prevention assemblies; but, it must be stressed that these are not all equally acceptable as protection against all types of hazards. The degree of hazard must be assessed along with the type of cross-connection present to determine which type of backflow prevention assembly is most suitable to the situation.

AIR GAP

An Air Gap is a physical separation of the supply pipe by at least two pipe diameters (never less than one inch) vertically above the overflow rim of the receiving vessel. In this case line pressure is lost. Therefore, a booster pump is usually needed downstream, unless the flow of the water by gravity is sufficient for the water use. With an air gap there is no direct connection between the supply main and the equipment. An air gap may be used to protect against a contaminant or a pollutant, and will protect against both backsiphonage and backpressure. An air gap is the only acceptable means of protecting against lethal hazards.

ATMOSPHERIC VACUUM BREAKER (AVB)

The AVB is always placed downstream from all shut-off valves. The air inlet valve closes when the water flows in the normal direction. But, as water ceases to flow the air inlet valve opens, thus interrupting the possible backsiphonage effect. If piping or a hose is attached to this assembly and run to a point of higher elevation, the backpressure will keep the air inlet valve closed because of the pressure created by the elevation of water. Hence, it would not provide the intended protection. Therefore, this type of assembly must always be installed at least six (6) inches above all down stream piping and outlets. Additionally, this assembly may not have shut-off valves or obstructions downstream. A shut-off valve would keep the assembly under pressure and allow the air inlet valve (or float check) to seal against the air inlet port, thus causing the assembly to act as an elbow, not a backflow preventer. The AVB may not be under continuous pressure for this same reason. An AVB must not be used for more than twelve (12) out of any twenty-four (24) hour period. It may be used to protect against either a pollutant or a contaminant, but may only be used to protect against a backsiphonage condition.

PRESSURE VACUUM BREAKER (PVB)

The PVB includes a check valve which is designed to close with the aid of a spring when flow stops. It also has an air inlet valve which is designed to open when the internal pressure is one psi above atmospheric pressure so that no non-potable liquid may be siphoned back into the potable water system. Being spring loaded it does not rely upon gravity as does the atmospheric vacuum breaker. This assembly includes resilient seated shut-off valves and test cocks. The PVB must be installed at least twelve (12) inches above all downstream piping and outlets. The PVB may be used to protect against a pollutant or contaminant, however, it may only be used to protect against backsiphonage. It is not acceptable protection against backpressure.

DOUBLE CHECK VALVE ASSEMBLY (DC)

The Double Check Valve Assembly consists of two internally loaded, independently operating check valves together with tightly closing resilient seated shut-off valves upstream and downstream of the check valves. Additionally, there are resilient seated test cocks for testing of the assembly. The DC may be used to protect against a pollutant only. However, this assembly is suitable for protection against either backsiphonage or backpressure. This type of device is typically in use at residential properties in the city of Napa.

REDUCED PRESSURE PRINCIPLE ASSEMBLY (RP)

This assembly consists of two internally loaded independently operating check valves and a mechanically independent, hydraulically dependent relief valve located between the check valves. This relief valve is designed to maintain a zone of reduced pressure between the two check valves at all times. The RP also contains tightly closing, resilient seated shut-off valves upstream and downstream of the check valves along with resilient seated test cocks. This assembly is used for the protection of the potable water supply from either pollutants or contaminants and may be used to protect against either backsiphonage or backpressure. This type of device is typically in use at residential properties in the city of Saint Helena. It also used for irrigation lines and commercial properties in Napa, Saint Helena and American Canyon.

DETECTOR ASSEMBLY (DCDA,RPDA)

This assembly type consists of either two internally loaded independently operating check valves and a mechanically independent, hydraulically dependent relief valve located between the check valves (RPDA), or just two internally loaded check valves (DCDA). These devices are installed as bypass devices with a meter on fire service connections. They detect leaks and unauthorized use. If you have a dedicated fire service line and backflow, you will, virtually in all cases, have a detector assembly installed on your fire device.

Sours: https://nvbackflow.com/faq.html
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Idle Air Control Valve NAPA/MILEAGE PLUS FUEL-MPF 329571

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Idle Air Control Valve NAPA/MILEAGE PLUS FUEL-MPF 329571





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Idle Air Control Valve NAPA/MILEAGE PLUS FUEL-MPF 329571

Idle Air Control Valve NAPA/MILEAGE PLUS FUEL-MPF 329571

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