Awwa Libros

This standard describes transit-time ultrasonic flowmeters for water supply service application in pipes running full. An ultrasonic flowmeter is a meter that uses acoustic energy signals to measure liquid velocity. There are currently two distinct types of ultrasonic flowmeters available: Doppler-effect and transit-time. The Doppler-effect meter is used exclusively for liquids containing solid particles or gases, and the transit-time flowmeter is used in a wide variety of applications in the water industry.

Make sound salary decisions for your utility. Compare your utility's salaries to those of similar utilities by filtering data. Reference salary range minimum, mid-point, and maximum levels for each position as well as 50th percentile, company-weighted average pay, and employee-weighted average pay.

The purpose of this standard is to provide the minimum requirements for cold-water meters--displacement type, metal alloy main case, including materials and design. This standard can be referenced in specifications for purchasing and receiving cold-water meters--displacement type, metal alloy main case. This standard can be used as a guide for manufacturing this type of meter. The stipulations of this standard apply when this document has been referenced and only to cold-water meters--displacement type, metal alloy main case.

The purpose of this standard is to provide the minimum requirements for manufacturing steel-cylinder-type prestressed concrete pressure pipe. This standard can be referenced in specifications for purchasing and receiving prestressed concrete pressure pipe, steel-cylinder type, and can be used as a guide for manufacturing this type of concrete pressure pipe. The stipulations of this standard apply when this document has been referenced in relation to prestressed concrete pressure pipe, steel-cylinder type.

Make sound salary decisions for your utility. Compare your utility's salaries to those of similar utilities by filtering data. Reference salary range minimum, mid-point, and maximum levels for each position as well as 50th percentile, company-weighted average pay, and employee-weighted average pay.

This standard covers the various types and classes of cold water fire service type meters in sizes 3 in. (80 mm) through 10 in. (250 mm) and the materials and workmanship used in their fabrication. A fire-service meter shall consist of one of the following: A combination of (1) a mainline meter of the turbine type (Class II), either Underwriters Laboratories listed or Factory Mutual Research approved; (2) either a UL-listed or an FM-approved fire-service strainer; (3) a bypass meter of the appropriate size for measuring low flow rates; and (4) an automatic valve for diverting flow rates other than fire demand through the bypass meter. A combination of (1) a mainline meter of the turbine type (Class II), either UL listed or FM approved; and (2) either a UL-listed or an FM-approved fire-service strainer. Major revisions to this edition of C703 include the following: Type I devices, proportional fire-service meters with check valve, are no longer addressed in this standard Information is provided on lead content criteria and recent federal legislation revising the definition of "lead free" in the Safe Drinking Water Act. The definition of manufacturer has been changed. The materials have been updated in response to legislation revising the definition of "lead free" in the Safe Drinking Water Act. The section on registers has been updated to include requirements for electronic display registers.

The purpose of this standard is to provide the minimum requirements for cold-water meters--displacement type, plastic main case, including materials and design. This standard can be referenced in specifications for purchasing and receiving cold-water meters--displacement type, plastic main case. This standard can be used as a guide for manufacturing this type of meter. The stipulations of this standard apply when this document has been referenced and only to cold-water meters--displacement type, plastic main case.

The purpose of this standard is to establish criteria for the establishment of a formal utility water conservation and efficiency program for utilities that wish to implement such a program under this standard. This standard can be referenced in the development and evaluation of water utility conservation and efficiency programs. Major revisions made to the standard include updating of the title and multiple sections to include the terminology water conservation "and efficiency"; new requirement for water shortage or drought plan; updated requirements related to metering, rate structures, and billing; a new section related to landscape transformations; updated current utility requirements related to water audit, validation, and public availability; new section to reflect integration of water efficiency into land-use planning, clarified that wholesale agency requirements should be appropriate and consistent with governing authorities; and updated documentation to ensure correspondence with new requirement sections that were added.

Make sound salary decisions for your utility. Compare your utility's salaries to those of similar utilities by filtering data. Reference salary range minimum, mid-point, and maximum levels for each position as well as 50th percentile, company-weighted average pay, and employee-weighted average pay.

The purpose of this standard is to provide the minimum requirements for reduced-wall, resilient-seated gate valves for water supply service, including application, materials, design, testing, inspection, rejection, marking, and shipping. This standard can be referenced in specifications for purchasing and receiving reduced-wall, resilient-seated gate valves for water supply service. The stipulations of this standard apply when this document has been referenced and then only to reduced-wall, resilient-seated gate valves for water supply service. The valves encompassed by this standard require considerations for compatibility with the material being conveyed from both chemical and physical perspectives. Wastewater implies a lack of control over its chemical and physical composition. Valves in compliance with this standard may be suitable for wastewater applications; however, compliance does not ensure manufacturer approval of a specific valve in wastewater applications. Suitability for a specific valve should be determined by analyzing a particular wastewater application in conjunction with the manufacturer.