The Asse 1022 Dual Check Valve is a space-saving, code-aware solution for potable water backflow protection. It helps prevent contaminants and corrosive substances, such as carbonic acid, from entering drinking water. Using an approved device helps protect potable supplies while supporting compliance with local and national plumbing requirements.
Asse 1022 Dual Check Valve
Backflow preventer manufacturers, including Watts, make devices that are built to meet ASSE performance requirements and recognized certifications. Depending on the model and application, approvals may include NSF/ANSI 61, UL, FM, or similar third-party listings. These credentials help confirm that materials will not leach harmful substances and that assemblies can withstand pressure and stress. Although some authorities require higher-protection assemblies, an Asse 1022 device may be a suitable 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 how Asse 1022 devices compare with higher-protection standards such as Asse 1013. It also covers how to select, install, and maintain units to stay compliant with plumbing codes and industry recommendations.
Backflow Basics And The Role Of Dual Check Valves
Backflow creates a potentially harmful risk because water can reverse direction inside a plumbing system. That backward flow may carry contaminants into potable lines and reduce the safety of drinking water. Water authorities and adopted plumbing codes require backflow protection to help prevent this kind of contamination.
Backflow usually happens because of one of two hydraulic conditions. Backsiphonage occurs when supply pressure falls, creating suction that can draw water in reverse. Backpressure happens when downstream pressure exceeds supply pressure and forces water in the wrong direction. Knowing the difference between backsiphonage and backpressure matters because each condition can call for a different type of protection.
Residential cross-connections often involve irrigation systems, garden hoses, boilers, and chemical injectors. Commercial settings add booster pumps, closed-loop HVAC systems, and process equipment. Without the right device, these connections may become pathways for pollutants or unwanted substances.
Dual check valves such as the Asse 1022 are intended for lower-risk backflow protection. They help prevent contaminants that may affect taste or odor but are not considered a direct health risk. The Asse 1022 Backflow Preventer is a compact solution for many applications identified in plumbing codes.
Proper device selection and installation are guided by codes and standards. ASSE performance requirements, together with ANSI-accredited standards development, help 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. When the hazard level is higher, authorities typically require a more protective assembly.
| Backflow Issue | Common Cause | Typical Protection |
|---|---|---|
| Backflow caused by suction | Negative supply pressure caused by line breaks, mains work, or heavy demand | Asse 1022 Backflow Preventer or air gap where required |
| Backpressure | Booster pumps, elevated tanks, or thermal expansion | Asse 1022 for low-hazard; RPZ for high-hazard |
| Drinking-water contamination risk | Irrigation fertilizer, boiler treatment chemicals, or process fluids | Evaluate the cross-connection and install the approved protection level |
How Backflow Occurs In Plumbing Systems
Backflow means water moves in reverse from a fixture, device, or private system toward the public supply. It can be caused by negative pressure or excessive downstream pressure. Either condition can allow contaminants to enter potable lines and threaten drinking-water quality.
Why Dual Check Valves Are Used For Low-Hazard Protection
A dual check valve uses two separate check mechanisms inside a single valve body. This redundancy protects low-hazard cross-connections against 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
An Asse 1022 Dual Check Valve is a compact backflow prevention device used for low-hazard potable-water applications. It uses two independent spring-loaded checks arranged in series. That arrangement helps stop reverse flow and gives the device a second sealing point. It maintains serviceability and reduces contamination risk during pressure shifts or brief backpressure events.
Functional Overview And Main Features
Spring-loaded checks provide positive closure under changing flow and pressure. Many models include serviceable internal parts and replaceable seats. That design can shorten maintenance time and reduce long-term ownership costs.
Manufacturers produce Asse 1022 units in materials such as bronze, brass, corrosion-resistant alloys, and engineered plastics. Sizes match standard pipe diameters and pressure ratings for municipal and commercial potable-water systems.
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. Properly sized models can meet flow demands for common 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 listed products exceed minimum requirements, which may reduce failure risk and support longer 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.
Together with ANSI-accredited standards development, these approvals can improve acceptance of an Asse 1022 Dual Check Valve in specifications and code reviews. For teams that need verified material safety and tested performance, ASSE 1022 compliance, NSF/ANSI 61 certification, and UL/FM marks can form 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 explains practical differences among RPZ assemblies, double-check devices, and other dual-check products used in U.S. plumbing systems.
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. By contrast, Asse 1013 RPZ units are designed for high-hazard cross-connections where contaminants could create a health risk. Asse 1024 applies to reduced-pressure principle devices used where severe contamination risk may exist. Use Asse 1012 standards when specifying certain dual-check products or service-line applications.
How ASSE 1022 Differs From ASSE 1013 And ASSE 1024 Devices
ASSE 1022 double-check devices rely on two check valves, and where applicable shutoff valves, to control backflow in low-hazard uses. 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 requirements and procedure complexity vary by device type. 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 following the 2018 UPC require ASSE 1013 RPZ 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. Always confirm requirements with the local water authority before installation.
| Feature | ASSE 1022 | Asse 1013 (RPZ) | ASSE 1024 Device | ASSE 1012 Device |
|---|---|---|---|---|
| Typical use | Low-hazard irrigation and selected HVAC makeup lines | High-hazard cross-connections and health-risk protection | Severe backflow hazards needing relief-valve protection | Specific dual-check uses allowed by local authority |
| Relative protection | Low hazard | High hazard | High | Application-dependent low-to-moderate protection |
| Relief feature | No relief valve | Required relief valve | Yes, required | No, unless specified |
| Typical testing | Periodic check valve testing | Annual testing and relief valve verification | Regular testing with relief-valve checks | Inspection frequency set by local requirements |
| Usual installations | Residential irrigation and selected HVAC makeup lines | 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 |
| Common code treatment | Accepted in many low-hazard cases | Mandated for high-hazard by many water authorities | Required for serious contamination threats | Selected where code or utility language specifically calls for it |
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. When in doubt, choose the higher protection level specified by the authority having jurisdiction.
Installation Maintenance And Code Compliance
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. This lets certified testers access 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, and drain provisions according to manufacturer instructions and local codes. 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. Clear records of service, repairs, and test results help demonstrate compliance during audits, inspections, 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 these guidelines can reduce downtime and detect wear before leaks or failures occur.
Selecting devices with recognized listings can simplify inspection and approval. Products with ASSE approvals and NSF/ANSI 61 certifications are often easier for inspectors to accept. UL/FM compliance also matters for commercial and fire-protection connections where third-party recognition is important.
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 the permit process and make sure the chosen Asse 1022 installation meets local standards to avoid delays and rework.
Establish a consistent record-keeping routine. Store manufacturer cut sheets, test certificates, and repair invoices with a map of the device location. This simplifies future inspections and supports transparent compliance during regulatory reviews.
Product Selection Guidance And Where To Buy
Choosing the right device means matching size, pressure rating, and materials to the plumbing system. Confirm that the Asse 1022 Dual Check Valve matches the pipe diameter and peak-flow requirement. Check pressure ratings against maximum working pressure, surge conditions, and site-specific operating conditions.
Material compatibility is a key consideration in potable-water systems. Choose brass, bronze, or NSF/ANSI 61-certified plastics to avoid corrosion or leaching. Check manufacturer data for chemical resistance, especially if local water chemistry is aggressive or unusual.
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.
Supplier reputation matters when purchasing an ASSE 1022 device. 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 terms and pricing policies affect final cost. Check manufacturer warranty limits, authorized-sale requirements, and MAP pricing rules that may prevent online price display. Some stores require cart checkout to reveal final pricing while preserving full warranty through authorized sales channels.
Choose Materials
- Select an Asse 1022 Dual Check Valve model that matches pipe size, flow rate, and installation layout.
- Use NSF/ANSI 61-certified components for potable-water systems whenever required or available.
- Verify pressure rating and surge tolerance for the Asse 1022 Backflow Preventer.
Trusted Suppliers
- Purchase from certified or authorized dealers so documentation is available for inspections.
- Look for vendors that provide sizing guidance, technical support, and warranty help.
- Installation Parts Supply often provides certified stock and model guidance.
| Selection Factor | What to Verify | Reason It Matters |
|---|---|---|
| Size and Flow | Pipe size, peak GPM, and manufacturer sizing chart | Prevents pressure loss and ensures proper operation |
| Material | Brass, bronze, or NSF/ANSI 61-certified plastics | Protects potable water quality and resists corrosion |
| Working pressure rating | Manufacturer pressure limits and site surge conditions | Reduces risk of damage during pressure changes |
| Compliance markings | ASSE listing, NSF/ANSI 61, and UL/FM marks where needed | Supports code compliance and regulatory acceptance |
| Source of purchase | Authorized dealer, documentation, warranty handling | Provides documentation and warranty help after purchase |
| Warranty and final cost | Warranty terms, authorized-sale rules, and final cart price | Protects investment and clarifies purchase cost |
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 risk in approved uses such as irrigation systems and certain HVAC makeup lines.
Correct device selection depends on hazard classification, code requirements, and water-authority approval. Use an Asse 1022 Backflow Preventer for low-hazard scenarios. 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. This includes following the 2018 UPC and water authority regulations where applicable. Purchase certified products from trusted suppliers. Verify ASSE, NSF/ANSI 61, and UL or FM listings for approvals and reliability.
Correct device selection, precise installation, and regular maintenance are essential. These steps, supported by certified devices and qualified testers, help safeguard potable water. They also make regulatory acceptance, inspection, and documentation easier. Following these practices helps an Asse 1022 Dual Check Valve or other approved backflow solution perform reliably over time.