CURRENT STANDARDS

ASSE International product performance standards, developed through industry consensus, detail how a product is intended to function under normal operating conditions and include testing procedures and requirements for performance, health and safety.

Deep knowledge and constant improvement of nearly 50 product performance standards for plumbing components – most notably backflow preventers and temperature actuated mixing valves – puts ASSE in a class of its own. ASSE standards are developed and revised under the American National Standards Institute (ANSI) accredited standards development process.

See below for a full listing of ASSE's product performance standards and their scopes.


ASSE Product Standards

ASSE Product Performance Standards

This standard provides performance standards and compliance testing procedures for atmospheric-type vacuum breakers that are single pipe-applied, flushometer-applied, or integrally-applied. Atmospheric type vacuum breakers provide protection of the potable water supply against pollutants or contaminants that enter the water system due to backsiphonage through the outlet. This standard does not apply to water closet tank ballcocks or similar devices that depend on float-operated valves to control flow.

This standard covers minimum performance requirements for anti-siphon fill valves intended to be installed in water closet tanks.

Devices covered by this standard are self-contained, direct acting, single diaphragm types. Devices shall be permitted to have an integral strainer, separate strainer connected to the valve inlet or be without strainer. Devices shall be permitted to be with or without an integral bypass relief valve. The purpose of this device is to reduce static and flowing pressures in water distribution systems.

Applies to backflow prevention devices used on potable water supplies connected to commercial dishwashing machines. The backflow prevention devices used in these applications include atmospheric-type vacuum breakers complying with ASSE 1001, hose connection vacuum breakers complying with ASSE 1011, pressure vacuum breakers complying with ASSE 1020, hose connection backflow preventers complying with ASSE 1052, spill-resistant vacuum breakers complying with ASSE 1056, and air gaps.

This standard applies to residential use (household) type dishwashers, both front and top loading, requiring connection to the potable water supply and discharging into the plumbing drainage system.

This standard applies to household type automatic and semiautomatic clothes washers, combination washer-dryers and dryers including coin-operated household types, requiring connection to the potable water supply & discharging into the building plumbing drainage system.

This standard applies to household type food waste disposers intended for installation in the household kitchen sink outlet, supplied with water from the sink supply faucet and discharged into the household plumbing drainage system. This standard does not apply to commercial food waste disposers intended for installation in a food handling establishment.

This standard applies to food waste grinders designed and intended for use in food establishments, supplied with water and which discharges waste into a plumbing drainage system.

This standard applies to devices classified as water hammer arresters having a permanently sealed cushion of water or gas isolated from the waterway and designed to provide continuous protection, without maintenance, against detrimental surge pressures within the water distribution system. Water hammer arresters are installed on water distribution system piping to prevent over pressures due to traveling shocks within water distribution systems. This prolongs the service life of valves, piping, fittings, trim, equipment, appliances, appurtenances and other devices which are part of the distribution system and to eliminate noise.

This standard applies only to those devices which are designed to be installed on the discharge side of the hose bibb, hydrant, or faucet which is fitted with hose threads. The design embraces a check valve member force loaded, or biased, to a closed position, and an atmospheric vent valve, force loaded, or biased, to an open position when the device is not under pressure. This device shall not be subjected to more than 12-hours of continuous water pressure. This device shall only be used on systems where the only source of low head back pressure comes from an elevated hose equal to or less than 10ft in height.

The devices covered by this standard are those which have functional capabilities for preventing both back-siphonage and back pressure and which can operate under continuous or intermittent pressure conditions. These devices have two independently operating check valves separated by an intermediate chamber with a means for automatically venting it to the atmosphere and can be installed in the horizontal, vertical up or vertical down orientations. The check valves are force loaded to a normally closed position and the venting means is force loaded to a normally open position.

This Standard applies to Reduced Pressure Principle Backflow Preventers (RP) and Reduced Pressure Principle Fire Protection Backflow Preventers (RPF). These assemblies consist of two independently-acting check valves, internally force loaded to a normally closed position and separated by an intermediate chamber (or zone) in which there is a hydraulically operated relief means for venting to atmosphere, internally force loaded to a normally open position. These assemblies are designed to operate under continuous pressure conditions. This standard also applies to Manifold Reduced Pressure Principle Backflow Assemblies consisting of two or more complete Reduced Pressure Principle Backflow Preventers in parallel. These devices are commonly referred to as RPZ's.

This standard provides performance requirements for backflow prevention devices for hand-held showers in the interest of health and safety. These devices provide backflow protection against backsiphonage and backpressure in hand-held showers. These are separate devices or are integral with wall-mounted or deck-mounted tub fillers, flexible hoses, or components that are attached to shower arms.

This standard applies to Double Check Backflow Prevention Assemblies (DC) and Double Check Fire Protection Backflow Prevention Assemblies (DCF). These assemblies consist of two independently acting check valves, internally force loaded to a normally closed position, two properly located, tightly closing shut-off valves, and properly located test cocks. They are designed and constructed to operate under intermittent or continuous pressure conditions. This standard also applies to Manifold Double Check Backflow Prevention Assemblies consisting of two or more complete Double Check Backflow Prevention Assemblies in parallel.

This standard applies to automatic compensating valves intended to be installed at the point of use, where the user has access to flow or final temperature controls, and where no further mixing occurs downstream of the device. This standard covers automatic compensating valves intended to control the water temperature to wall or ceiling mounted hand-held showers; shower heads; body sprays either in individual shower or tub/shower combination fittings; and tub spouts when part of tub/shower combination fittings.

Temperature Actuated Mixing Valves for Hot Water Distribution Systems are used for controlling in-line water temperatures in domestic hot water systems and shall be installed at the hot water source. They are not intended for end use applications including emergency eyewash and shower equipment. Devices consist of a hot water inlet connection, a cold water inlet connection, a mixed water outlet connection, a thermal element and a means for adjusting the mixed water outlet temperature.

Devices covered by this standard are designed primarily to supply water to drain traps which have infrequent use and in which water evaporation would allow sewer gas to enter the premises. This device is located in the domestic water distribution system and is designed to supply potable water to a drain trap to maintain the water seal. A means for the prevention of backsiphonage shall be incorporated as part of the device.

These devices shall have a permanent means to protect against backflow due to either backsiphonage or backpressure. The backflow protection shall include a minimum of two (2) mechanisms: an air inlet for preventing backsiphonage and a check valve for preventing backpressure backflow. These devices are terminal fittings that supply potable water to hose connections without danger of freezing.

These devices are for installation in water supply lines to prevent the entrance of non-potable material into the potable water supply by backsiphonage only. It is not for use in any system where backpressure can be applied to the assembly. When a supply pressure is between 7 -14 kPa (1-2 p.s.i.), the air inlet valve is open and the assembly will continuously discharge. Due to this probability of water discharge from the atmospheric air inlet valve, the assembly shall only be installed where water discharge does not cause damage.

This standard covers devices for installation in the drain line of residential dishwashers, to prevent the backflow of contaminated liquid and entrained material into the dishwasher.

Backflow preventers for beverage dispensing equipment are engineered for installation in carbonated post-mix dispensing systems. ASSE 1022 covers backflow prevention devices designed to protect the potable water supply that serves beverage dispensing equipment, and is intended for devices used under continuous or intermittent pressure conditions.

The hot water dispensers covered by this standard are those which are designed for household use and are installed at the sink and supplied with water from the kitchen sink water supply. They are storage types, continuously vented to atmosphere and electrically.

This standard applies to devices classified as dual check backflow preventers. The purpose of this device is to keep polluted water from flowing back into the potable water system when pressure is temporarily higher in the polluted part of the system than in the potable water piping. The devices covered by this standard are intended to protect the potable water supply from low hazard pollution at residential service lines and individual outlets.

Positive pressure reduction devices are to be used in building drainage waste and vent (DWV) systems. They are intended to reduce the impact of short duration air pressure transients which arise in DWV networks through use. They are not intended to have any effect on long duration or steady-state offsets in air pressure.

These devices prevent carbon dioxide gas and carbonated water from backflowing into the potable water system that supplies the carbonating unit. These devices consist of two independently acting check valves internally force loaded to a normally closed position and designed to operate under continuous or intermittent pressure conditions.

These devices are designed to protect the potable water supply from pollutants or contaminants that enter the system by backflow due to backsiphonage or backpressure. This standard applies only to devices classified as backflow preventers designed for installation on laboratory faucets on the discharge side of the last shut-off valve. They are not for use under constant pressure conditions. These devices consist of two independently acting check valves, force loaded or biased to a normally closed position and between the check valves a means for automatically venting to atmosphere, force loaded or biased normally open position.

Covers pressurized flushing devices (PFD's) intended to flush water closets, urinals, and other plumbing fixtures. This harmonized standard establishes unified performance requirements for the safe and sanitary operation of PFDs and specifies requirements for materials, design, methods of operation, test methods and markings.

Trap seal primers are primarily designed to supply water to floor drain traps that have infrequent use and in which water evaporation would allow sewer gas to enter the premises. The trap seal primers covered by this standard are designed to supply water to a drain trap to provide and maintain its water seal by using a supply from a fixture drainline, ballcock, flushometer valve tailpiece or an electric trap seal primer. The rate of water flow to the trap shall be permitted to be fixed or adjustable.

This standards applies to Reduced Pressure Detector Assemblies (RPDA) and Reduced Pressure Detector Assemblies Type II (RPDA-II). The RPDA and RPDA-II assemblies consist of two (2) independently acting check valves, internally force loaded to a normally closed position, and separated by an intermediate chamber (or zone) in which there is a hydraulically operated relief means for venting to atmosphere, internally force loaded to a normally open position. These assemblies are designed to operate under continuous pressure conditions. The assembly shall include two (2) properly located, tightly closing shut-off valves and properly located test cocks. The assemblies also include a bypass line which provides a visual or audible indication of system leakage or unauthorized use of water. This standard also applies to Manifold Reduced Pressure Detector Assemblies consisting of two (2) or more complete RPDA or RPDA-II assemblies in parallel.

This standard applies to Double Check Detector Assembly (DCDA) and Double Check Detector Assembly Type II (DCDA-II). The DCDA and DCDA-II assemblies consist of two (2) independently acting check valves, internally force loaded to a normally closed position. These assemblies are designed to operate under continuous pressure conditions. The assembly shall include two (2) properly located, tightly closing shut-off valves and properly located test cocks. The assemblies also include a bypass line which provides a visual or audible indication of system leakage or unauthorized use of water. This standard also applies to Manifold Double Check Detector Assemblies consisting of two (2) or more complete DCDA or DCDA-II assemblies in parallel.

AAVC's are devices used in chemical waste systems to prevent the siphonage of trap seals. These devices do not relieve back pressure; they only allow air to enter the system. They are designed to be used for individual fixtures or for a horizontal branch serving multiple fixtures. When the devices are installed in a building, there shall be at least 1 open vent terminal to relieve positive pressure which extends to the atmosphere outside of the building serving the same building drain on which these devices are installed. These devices shall not be installed in an area with a constant air pressure differential greater than ±0.3 inches (7.6 mm) WC.

Stack AAVs for Sanitary Drainage Systems are devices used in plumbing drainage systems to prevent the siphonage of water trap seals. These devices do not relieve back pressure; they only allow air to enter the system. They are designed to be installed on stacks where branches on multiple floors are connected. When these devices are installed in a building, there shall be at least 1 open vent terminal to relieve positive pressure which extends to the atmosphere outside of the building serving the building drain on which these devices are installed.

Individual and Branch Type AAVs for Sanitary Drainage Systems are devices used in plumbing drainage systems to prevent the siphonage of water trap seals. These devices do not relieve back pressure; they only allow air to enter the system. These devices are designed to be used for individual fixtures or for a horizontal branch serving multiple fixtures. When these devices are installed in a building, there shall be at least 1 open vent terminal to relieve positive pressure which extends to the atmosphere outside of the building serving the building drain on which these devices are installed.

These devices are designed to be installed on the discharge side of a hose threaded outlet on a potable water system. These two-check devices protect against backflow, due to backsiphonage or low-head backpressure, and are field testable to certify protection under the high-hazard conditions present at a hose threaded outlet. These devicse shall only be used on systems where there is low-head backpressure that does not exceed that generated by an elevated hose equal to or less than 10 feet (3.0 m) in height.

These devices provide protection of the potable water supply from contamination due to backsiphonage or backpressure without damage to the device due to freezing, and is field testable to verify protection under the high hazard conditions present at a hose threaded outlet. This device shall only be used on systems where the low-head backpressure does not exceed that generated by an elevated hose equal to or less than 10 feet (3 m) in height, and are not subjected to continuous water pressure.

Chemical dispensing systems with integral backflow protection provide a means of mixing potable water with chemicals to provide the user with a chemical solution that is ready for use. In industrial and institutional cleaning operations, it is desirable and convenient to dispense cleaning solutions derived from potable water and concentrated products; however, a dispensing device connected to potable supply constitutes a cross-connection, which could be a source of contamination to the potable water. ASSE 1055 identifies accepted methods of backflow protection, as well as test methods for evaluating backflow systems incorporated into a chemical dispensing system.

This standard applies only to those assemblies classified as a spill-resistant vacuum breaker assemblies (SVB). These assemblies are designed for installation in water systems that are normally under continuous pressure conditions. Spill resistant vacuum breaker assemblies are installed in the water supply lines to prevent the backflow of non-potable material into the potable water supply caused by backsiphonage only.

The purpose of freeze-resistant sanitary yard hydrants is to supply potable water without danger of damage to the device due to freezing, to provide protection of the potable water supply from contamination due to groundwater and to prevent backflow in accordance with the backflow prevention device selected. These devices shall only be used on systems where the low-head backpressure does not exceed that generated by an elevated hose equal to or less than 10ft in height. This device shall not be subjected to continuous pressure.

ASSE 1060 provides performance standards and compliance testing procedures for devices that provide a range of protection for fluid conveying components that are mounted outside and above ground so that they may avoid damage from freezing, vandalism, and tampering. Fluid conveying components protected by these enclosures include backflow prevention assemblies and devices, water meters, control valves, pressure reducing valves, air release valves, pumps, and other components installed outdoors and above ground that require protection from freezing or require system security protection.

The purpose of this standard is to establish minimum performance requirements for push-fit fittings and push-fit connections that are integrated into plumbing devices.

This standard applies to Temperature Actuated, Flow Reduction (TAFR) Valves for Individual Supply Fittings, which react to high-temperature water and are intended for use in-line with, or integrated into, individual plumbing supply fittings such as shower heads, bath and utility faucets, and sink and lavatory faucets. These valves automatically reduce discharge flow if water temperature exceeds a preset limit.

The purpose of air valve and vent inflow preventer assemblies is to allow the release and admission of high volumes of air through air valves and air vents in potable water distribution systems, but prevent the entry of contaminated water when the air valve outlet becomes submerged from flooding or is the target of malicious tampering.

Portable backflow prevention assembly field test kits shall be used in testing the performance of backflow prevention assemblies. This standard is confined to analog dial and digital instrumentation. They shall be designed to indicate the operation of a backflow prevention assembly to pre-established testing procedures. The backflow field test kit shall include all gauges, hoses, valves and fittings required for testing purposes.

Automatic pressure balancing in-line valves are used to equalize incoming hot and cold water line pressures for minimizing mixed water temperature variations due to pressure fluctuations when used with a mixing valve or two handle valve set. They are not designed to limit the maximum outlet temperature at the point-of-use. The device is intended for use in individual plumbing fixtures fittings such as shower heads, bath utility faucets and sink and lavatory faucets.

Automatic Temperature Control Mixing Valves supply tempered water to the end user & automatically compensate for pressure and/or temperature variations in water distribution systems. They have the capability to significantly reduce the outlet flow in the event of a cold water distribution system failure. They are equipped with an adjustable means to limit the setting towards the hot position. Designed to be final temperature control.

This standard covers water temperature limiting devices intended to limit the hot or tempered water temperature supplied to fittings for fixtures such as sinks, bidets, lavatories, and bathtubs to reduce the risk of scalding. These devices are not designed to address thermal shock.

These devices, including eyewash, eye/face wash, drench showers and combination units, are intended to be installed in systems that comply with ANSI Z358.1. These devices shall consist of a hot water inlet connection, a cold water inlet connection, a mixed water outlet connection, a temperature controlling element and a means for adjusting the mixed water outlet temperature while in service. The device shall also have a means to limit the maximum outlet temperature under normal operating conditions. Provisions shall be made so that the temperature cannot be inadvertently adjusted.

Because this barrier method does not automatically & periodically provide water to replenish the trap seal, it must provide a barrier on the inlet side of the trap seal that will minimize evaporation caused by the ambient air on the building side of the trap. This barrier must also provide adequate drainage capabilities required for the floor drain's intended use as determined by its design, size & installation location. While developing the requirements & tests for these devices, certain adverse conditions were taken into consideration: introduction of fouling substances such as dirt/sand, floor wax or grease into the device. Drainage requirements are provided to accommodate infrequent & sizeable water flows caused by water line breaks, fixture overflows or backflow preventer discharges.

Dielectric Pipe Unions are used to join dissimilar pipe materials to prevent the flow of galvanic current or to isolate sections of pipe from stray currents which could cause accelerated corrosion and premature failure of plumbing components and associated piping. These devices are metallic and join metallic pipe in a similar manner to standard pipe unions and flanges, with the added ability to electrically insulate one pipe section from another.

ASSE 1081 provides performance standards and testing procedures for pressure reducing boiler feed valves that offer protection of the potable water supply by means of an integral backflow preventer with an intermediate atmospheric vent. Devices covered by this standard are installed in plumbing systems to fill and reduce static boiler pressure under normal conditions, as well as prevent backflow into potable water supply lines when pressures fluctuate.

This standard covers water heaters with defined setpoint controls under various steady-state flow conditions. ASSE 1082 is for water heaters that control the outlet temperature to specific limits and are installed within a hot water distribution system but not at point-of-use. The water heater shall consist of a heat exchanger, a cold water inlet connection, a hot water outlet connection, and a means for precisely governing the outlet temperature. The water heater controller shall be listed to the appropriate electrical safety standard in accordance with the water heater category.

Water heaters with precise output temperature control under varying flow conditions are used to provide tempered water to the user. As such, they need to limit maximum water temperature at the point of use in order to reduce and control the risks of scalding. ASSE 1084 is intended to provide a level of scald protection consistent with the current ASSE 1070 / ASME A112.1070 / CSA B125.70, Performance Requirements for Water Temperature Limiting Devices. These water heaters are not intended to limit thermal shock and are not substitutes for automatic compensative valves complying with ASSE 1016 / ASME A112.1016 / CSA B125.16, Performance Requirements for Automatic Compensating Valves for Individual Showers and Tub/Shower Combinations.

This standard covers water heaters with precise setpoint controls under varying flow conditions. ASSE 1085 is for water heaters supplying tepid water to emergency equipment, including eyewash, eye/face wash, emergency showers, and combination units. These water heaters heat the cold water supply to an acceptable tepid temperature within the intended range listed in ISEA Z358.1. The water heaters shall consist of a cold water inlet connection, a means of heating the water and controlling the discharge temperature, and an outlet connection to supply tepid water to the emergency equipment. The water heater shall also have a means to limit the maximum outlet temperature under normal operating conditions. Provisions shall be made so that the temperature setting of the water heater cannot be inadvertently adjusted.

Commercial water treatment equipment is used in point-of-entry (POE) and point-of-use (POU) applications connected to building plumbing to improve the water quality characteristics of potable water. ASSE 1087 includes testing requirements for components and complete systems. Electrical compliance is not covered by the standard. Plumbed water treatment units include any device or component, point-of-entry and point-of-use that is used in building to improve the quality of the water. ASSE 1087 covers all water treatment products that are connected to the building’s plumbing system for potable water.


 

FOLLOW US