The Asse 1022 Dual Check Valve is a compact, code-aware solution for potable water backflow protection. It is designed to help prevent reverse flow that could carry contaminants, corrosive substances, or carbonic acid into drinking-water lines. Approved devices are essential for safeguarding potable supplies and following local and national codes.
Asse 1013
Manufacturers such as Watts produce backflow preventers that meet ASSE performance requirements and certifications. These may include NSF/ANSI 61 and UL/FM approvals. Those credentials help verify material safety, pressure durability, and overall assembly performance. Although some authorities require higher-protection assemblies, an Asse 1022 device may be a reliable low-hazard option where the local authority permits it.
The Asse 1022 Dual Check Valve is valued for its small footprint, simple installation, and low maintenance costs. This guide explains Asse 1022 devices alongside higher-protection standards, including Asse 1013. It also outlines selection, installation, maintenance, and compliance steps so the unit can meet plumbing-code expectations and industry guidance.
Backflow Basics And The Role Of Dual Check Valves
Backflow is a significant threat to water systems because it allows treated water to move backward. That backward flow may carry contaminants into potable lines and reduce the safety of drinking water. Local water authorities and adopted codes require measures that prevent this contamination.
Backflow usually happens because of one of two hydraulic conditions. Backsiphonage occurs when supply pressure drops and creates a vacuum that pulls water backward. Backpressure happens when downstream pressure exceeds supply pressure and forces water in the wrong direction. Understanding backsiphonage versus backpressure is critical because each may require a specific prevention method.
Residential cross-connections often involve irrigation systems, garden hoses, boilers, and chemical injectors. Commercial facilities may also include booster pumps, closed-loop HVAC systems, process equipment, and similar connections. Without proper protection, these connections can become sources of pollutants.
Dual check valves such as the Asse 1022 are intended for low-hazard backflow protection. They help prevent contaminants that may affect taste or odor but are not considered a direct health risk. An Asse 1022 Backflow Preventer can be a compact solution for approved low-hazard applications described by plumbing codes and water authorities.
Proper device selection and installation are guided by codes and standards. ASSE performance requirements and ANSI-accredited development support product acceptance. Installers must follow local plumbing code language, including references such as the 2018 UPC and AWWA M-14, when installing Asse 1022 devices.
Typical approved uses include residential irrigation, HVAC makeup lines, and some commercial low-hazard cross-connections. Where hazards are higher, more protective devices are required.
| Issue | Cause | Typical Protection |
|---|---|---|
| Reverse flow from suction | Main pressure loss from firefighting, broken lines, or supply interruption | Asse 1022 Backflow Preventer or air gap where required |
| Backflow caused by pressure imbalance | Booster pumps, elevated tanks, or thermal expansion | Asse 1022 where low-hazard is approved, or RPZ where health hazards exist |
| Risk to potable water quality | Fertilizers, boiler chemicals, cleaning agents, or process liquids | Classify the hazard and use Asse 1022 or a higher-protection assembly |
What Backflow Is And How It Happens
Backflow is the backward movement of water from any source into the public supply. It may be caused by negative supply pressure, backsiphonage, or excess downstream pressure. Either condition can allow contaminants to enter potable lines and threaten drinking-water quality.
Why Low-Hazard Systems Use Dual Check Valves
Dual check valves provide two independent check mechanisms in one body. That built-in redundancy helps protect low-hazard cross-connections from reverse flow. Asse 1022 devices meet performance criteria for nuisance-level risks and are common where codes allow double-check assemblies.
Asse 1022 Dual Check Valve
The Asse 1022 Dual Check Valve is a compact backflow device designed for low-hazard potable water protection. It uses two independent spring-loaded checks arranged in series. This arrangement prevents reverse flow and provides redundant sealing. It also supports serviceability while reducing contamination risk during pressure changes, brief backpressure events, or short disruptions.
Key Features And Functional Overview
Spring-loaded check mechanisms help the valve close positively when flow or pressure changes. Many units are built with serviceable internals, replaceable seats, or removable parts. This design reduces maintenance time and lifecycle costs.
Manufacturers offer units in several materials, including bronze, brass, corrosion-resistant metals, and engineered plastics. Available sizes are designed to match common pipe diameters, pressure ratings, and potable-water system requirements.
Compact bodies, service access, and built-in test ports can make installation and inspection faster. An Asse 1022 Backflow Preventer can fit into tight locations where larger backflow assemblies may not be practical. It meets flow requirements for typical low-hazard applications.
Standards And Certifications That Support ASSE 1022 Devices
ASSE standards establish baseline performance tests and functional thresholds. These tests verify reliable operation. Many products exceed these minimums, reducing failure risk and extending maintenance intervals.
NSF/ANSI 61 certification helps confirm that wetted materials are suitable for drinking water and do not leach harmful contaminants. UL/FM approvals can support confidence in durability, pressure resistance, and stress-tested performance. This gives specifying engineers additional assurance.
When combined with ANSI-accredited development, these approvals improve the Asse 1022 Dual Check Valve’s acceptance in plumbing codes and project specifications. For project teams seeking verified material safety and tested performance, ASSE 1022 features, NSF/ANSI 61, and UL/FM marks create a strong compliance package.
ASSE 1022 Compared With ASSE 1013, ASSE 1012, And ASSE 1024
This outline compares common backflow protection options to help match device features with risk and code needs. It highlights practical differences between RPZ, double-check, and other dual-check devices used in the United States.
When choosing a device, begin with the hazard level. ASSE 1022 double-check assemblies suit low-hazard services such as irrigation and some HVAC makeup lines. In contrast, Asse 1013 RPZ devices are intended for high-hazard cross-connections where contamination could threaten health. Asse 1024 covers reduced-pressure principle devices for severe contamination scenarios. Asse 1012 may apply when local rules call for specific dual-check devices or service-line configurations.
How ASSE 1022 Differs From ASSE 1013 And ASSE 1024
ASSE 1022 double-check assemblies use two check valves and shutoff valves to prevent backflow in low-hazard situations. ASSE 1013 RPZ assemblies add a relief valve that vents to atmosphere under certain pressure conditions, creating a higher protection margin. Asse 1024 reduced-pressure principle devices use the same relief concept but apply to a broader set of severe contamination risks.
Testing frequency and complexity differ between these products. RPZ units under Asse 1013 require more rigorous annual and post-event testing with relief valve verification. ASSE 1022 double-check devices require periodic testing of the check mechanisms, generally with simpler procedures than RPZ assemblies.
When ASSE 1012 Or Other Dual-Check Standards Apply
Asse 1012 defines requirements for certain dual-check configurations used in low- to moderate-hazard settings. Choose this standard when local code or the water authority allows a dual-check format but requires a recognized standard beyond ASSE 1022.
Code requirements differ from one jurisdiction to another. Many municipalities that follow the 2018 UPC require ASSE 1013 RPZ assemblies for high-hazard cross-connections. Utilities may allow ASSE 1022 for low-hazard applications or specify Asse 1012-certified dual-check devices for certain service-line uses. Before installation, confirm the required protection level with the local water authority or authority having jurisdiction.
| Comparison Point | ASSE 1022 Device | Asse 1013 (RPZ) | Asse 1024 | Asse 1012 |
|---|---|---|---|---|
| Main application | Low-hazard irrigation and selected HVAC makeup lines | High-hazard cross-connections and health-risk protection | Severe contamination risks requiring reduced-pressure principle | Dual-check configurations for specific service applications |
| Relative protection | Low | High | High hazard | Low to moderate |
| Atmospheric relief | No | Yes, required | Yes, required | No, unless specified |
| Inspection requirement | Periodic testing of both checks | More rigorous annual RPZ testing | Annual reduced-pressure assembly testing | Periodic testing per authority rules |
| Common applications | Irrigation and makeup water for noncritical HVAC | High-hazard systems involving toxic or harmful fluids | Severe contamination sources where health impact is possible | Service lines where dual-check is sufficient and allowed |
| Code preference | Accepted in many low-hazard cases | Often required where contamination could affect health | Used where serious contamination protection is required | Used when specified by local code or utility |
When comparing ASSE 1022 with RPZ assemblies, consider the hazard level, safety margin, and testing burden. The choice between RPZ and double-check protection depends on hazard classification, local plumbing code, and water authority rules. If requirements are uncertain, follow the higher protection level required by the authority having jurisdiction.
Installing, Maintaining, And Staying Code-Compliant
A correct Asse 1022 installation starts with careful planning. Dual check valves should be installed where they are accessible and oriented according to the manufacturer’s instructions. Maintain enough space for service, testing ports, and unions. That clearance allows certified testers or service technicians to reach fittings without unnecessary disassembly.
Use sound piping practices so the installation does not create a new cross-connection risk. Avoid installing devices where downstream cross-connections could undermine the protection. Install shutoffs, unions, drains, and service fittings as required by the manufacturer and local code. Make sure unions and test cocks remain accessible for routine service and backflow testing.
Maintenance intervals are usually determined by local regulations, water authority rules, and site requirements. Many jurisdictions require annual inspection or testing by certified backflow professionals. Detailed records of service and test results are important for proving compliance during audits and permit reviews.
Certified testers can provide documentation that meets many regulatory and water-authority requirements. Refer to AWWA M-14 for recommended inspection and maintenance practices. Following recognized guidance can help reduce downtime and identify wear before it becomes a leak or failure.
Choose devices with recognized listings to simplify approval. Products with ASSE approvals and NSF/ANSI 61 installation ratings are often accepted more readily by plumbing inspectors. UL/FM compliance may also be important for commercial, industrial, or fire-protection connections that require third-party recognition.
Before starting, identify the applicable plumbing code edition and local water authority requirements. Certain jurisdictions may require an RPZ rather than a dual check valve. Confirm permitting requirements and verify that the selected Asse 1022 installation meets local standards before work begins.
Establish a consistent record-keeping routine. Store manufacturer cut sheets, test certificates, and repair invoices with a map of the device location. This makes future inspections easier and supports clear compliance during regulatory reviews.
Where To Buy And How To Select The Right Product
Choosing the right device means matching size, pressure rating, and materials to the plumbing system. Make sure the Asse 1022 Dual Check Valve fits the pipe diameter and peak flow. Check pressure ratings against maximum working pressure, surge conditions, and site-specific operating conditions.
Material compatibility is essential for potable water systems. Use brass, bronze, or NSF/ANSI 61-certified plastics to reduce corrosion risk and avoid harmful leaching. Review the manufacturer’s chemical-resistance data for local water chemistry.
Certification checks simplify approval and inspection. Make sure the product shows ASSE 1022 compliance and NSF/ANSI 61 certification where required. If local codes demand UL or FM approval, confirm those marks before purchase.
Consider supplier reputation when buying ASSE 1022 devices. Authorized dealers provide genuine parts, documentation, and warranty support. Installation Parts Supply is a reliable distributor that stocks certified units and can assist with model selection.
Warranty coverage and pricing rules can affect the final purchase cost. Check manufacturer warranty limits, authorized-sale requirements, and MAP pricing rules that may prevent online price display. Some suppliers show final pricing only in the cart while still preserving warranty coverage through authorized sales channels.
Choose Materials
- Match pipe size and flow to the Asse 1022 Dual Check Valve model.
- Use NSF/ANSI 61-certified components for potable-water systems whenever required or available.
- Check the Asse 1022 Backflow Preventer pressure rating and surge tolerance before installation.
How To Choose A Supplier
- Purchase from certified or authorized dealers so documentation is available for inspections.
- Choose vendors that offer sizing support and warranty handling.
- Installation Parts Supply commonly offers certified stock and practical model-selection guidance.
| Selection Point | Details to Confirm | Reason It Matters |
|---|---|---|
| Size and Flow | Line diameter, expected flow, and model capacity data | Prevents pressure loss and ensures proper operation |
| Material | Brass, bronze, or NSF/ANSI 61-certified plastics | Reduces leaching concerns and supports longer service life |
| Pressure and surge capacity | Manufacturer pressure limits and site surge conditions | Ensures safety under normal and peak conditions |
| Certifications | Required approvals for code, utility, or project specifications | Helps inspectors approve the installation more easily |
| Source of purchase | Dealer authorization, paperwork, and warranty support | Provides documentation and warranty help after purchase |
| Warranty & Pricing | Warranty terms, authorized-sale rules, and final cart price | Helps buyers understand total cost and warranty protection |
Conclusion
ASSE 1022 double-check valves are dependable, space-saving choices for low-risk backflow prevention where local authorities allow them. The Asse 1022 Dual Check Valve uses two spring-loaded checks and materials that meet NSF/ANSI 61 and ASSE standards. This helps reduce contamination risks in irrigation and some HVAC makeup lines.
Choosing the right device depends on hazard level and code compliance. An Asse 1022 Backflow Preventer is appropriate for low-hazard scenarios where it is allowed. For high-hazard applications, authorities may require ASSE 1013, ASSE 1024, or another reduced-pressure assembly. Proper selection streamlines permitting and improves water-system safety.
To ensure backflow prevention compliance, follow manufacturer guidelines and local plumbing codes. Where applicable, this may include the 2018 UPC, local amendments, and water authority rules. Purchase certified products from trusted suppliers. Confirm ASSE listings, NSF/ANSI 61 certification, and UL or FM approvals when those marks are required.
Reliable backflow protection depends on correct selection, accurate installation, and routine maintenance. These steps, supported by certified devices and qualified testers, help safeguard potable water. They also support regulatory acceptance. Following these practices helps an Asse 1022 Dual Check Valve or other approved backflow solution perform reliably over time.