An Asse 1022 Dual Check Valve provides a low-profile way to support potable-water backflow protection where local code allows it. It is designed to block 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. These credentials help confirm that materials will not leach harmful substances and that assemblies can withstand pressure and stress. While some jurisdictions require higher-protection assemblies, the Asse 1022 can serve as a reliable low-hazard option where allowed.
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.
Understanding Backflow And The Role Of Dual Check Valves
Backflow is a significant threat to water systems because it allows treated water to move backward. This reverse movement can introduce contaminants into plumbing and compromise drinking-water safety. Water authorities and adopted plumbing codes require backflow protection to help prevent this kind of contamination.
Two main hydraulic causes lead to backflow incidents. Backsiphonage occurs when supply pressure falls, creating suction that can draw water in reverse. Backpressure occurs when pressure on the downstream side becomes greater than supply pressure and pushes water backward. Understanding backsiphonage versus backpressure is critical because each may require a specific prevention method.
In homes, common cross-connections include irrigation systems, garden hoses, boilers, and chemical injection points. 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, including the Asse 1022 model, are designed for low-hazard 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.
Correct selection and installation depend on the applicable codes, listings, 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.
Common approved uses may include residential irrigation, HVAC makeup water, and selected commercial low-hazard cross-connections. Where hazards are higher, more protective devices are required.
| Issue | Typical Cause | Suggested 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 where low-hazard is approved, or RPZ where health hazards exist |
| Risk to potable water quality | Chemical injection, treated boiler water, irrigation additives, or industrial fluids | Assess hazard level; apply Asse 1022 or higher-rated device |
What Is Backflow And How It Occurs
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. Both conditions can introduce contaminants and threaten potable 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 are tested for low-hazard or nuisance-level risks and are commonly used where the authority allows this type of protection.
Asse 1022 Dual Check Valve Overview
The Asse 1022 Dual Check Valve is a compact backflow device designed for low-hazard potable water protection. It features two independent, spring-loaded check valves 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.
Key Features And How The Valve Works
Spring-loaded checks provide positive closure under changing flow and pressure. Many units are built with serviceable internals, replaceable seats, or removable parts. That design can shorten maintenance time and reduce long-term ownership costs.
Manufacturers offer units in several materials, including bronze, brass, corrosion-resistant metals, 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. Those tests are used to verify dependable operation under defined conditions. 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. These listings give engineers, inspectors, and installers additional assurance when specifying equipment.
When combined with ANSI-accredited development, these approvals improve the Asse 1022 Dual Check Valve’s acceptance in plumbing codes and project specifications. 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.
Comparison With Related Standards And Products: ASSE 1013, ASSE 1012, 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.
Device selection should start with a clear hazard-level assessment. ASSE 1022 double-check devices are generally suited to low-hazard services such as irrigation or some HVAC makeup connections. 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 devices rely on two check valves, and where applicable shutoff valves, to control backflow in low-hazard uses. ASSE 1013 RPZ devices include a relief valve that vents to atmosphere when internal pressure drops, providing a higher safety 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. Asse 1013 RPZ units commonly require annual testing, post-event checks, and 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.
| Device Feature | Asse 1022 | Asse 1013 Reduced Pressure Zone | ASSE 1024 Device | Asse 1012 Dual-Check Standard |
|---|---|---|---|---|
| Typical use | Low-hazard services like irrigation and some HVAC | Health-hazard cross-connections requiring RPZ protection | Severe contamination risks requiring reduced-pressure principle | Certain service-line dual-check applications |
| Relative protection | Low hazard | Higher protection level | High | Low to moderate |
| Relief feature | No | Yes, required | Yes, required | Usually no relief valve unless required |
| Inspection requirement | Periodic testing of both checks | More rigorous annual RPZ testing | Regular testing with relief-valve checks | Inspection frequency set by local requirements |
| Common applications | Irrigation and makeup water for noncritical HVAC | Boiler makeup, chemical feed, and health-hazard connections | Severe contamination sources where health impact is possible | Service lines where dual-check is sufficient and allowed |
| Authority preference | Permitted where local authority approves low-hazard use | 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. RPZ versus double-check decisions depend on hazard assessment, local code, and water authority rules. When in doubt, choose the higher protection level specified by the authority having jurisdiction.
Installing, Maintaining, And Staying Code-Compliant
Proper Asse 1022 installation begins with thorough planning. Place dual check valves in an easily accessible area and follow the manufacturer’s orientation guidelines. Maintain enough space for service, testing ports, and unions. That clearance allows certified testers or service technicians to reach fittings without unnecessary disassembly.
Follow good piping practices to avoid introducing new hazards. Avoid installing devices where downstream cross-connections could undermine the protection. Install shutoffs, unions, and drain provisions according to manufacturer instructions and local codes. Keep unions and test cocks accessible for inspections, service work, 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 provide documented evidence that satisfies most regulatory requirements. AWWA M-14 can be used as a reference for inspection, maintenance, and backflow-prevention practices. Following these guidelines can reduce downtime and detect wear before leaks or failures occur.
Choose devices with recognized listings to simplify 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 installation, learn the applicable plumbing code edition and water authority rules in your area. 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. Keep manufacturer cut sheets, test certificates, repair invoices, and a location map together. This simplifies future inspections and supports transparent 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. 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. Use brass, bronze, or NSF/ANSI 61-certified plastics to reduce corrosion risk and avoid harmful leaching. Check manufacturer data for chemical resistance, especially if local water chemistry is aggressive or unusual.
Verifying certifications can make approval and inspection easier. Confirm that the product lists ASSE 1022 compliance and NSF/ANSI 61 certification. 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 reputable distributor that stocks certified units and can help with model selection.
Warranty terms and pricing policies affect final cost. Review manufacturer warranty limits and any MAP rules that hide prices online. 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.
- Prefer components with NSF/ANSI 61 certification for potable systems.
- Verify pressure rating and surge tolerance for the Asse 1022 Backflow Preventer.
How To Choose A Supplier
- 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 commonly offers certified stock and practical model-selection guidance.
| Selection Point | Details to Confirm | Why It Helps |
|---|---|---|
| Pipe size and flow | Line diameter, expected flow, and model capacity data | Prevents pressure loss and ensures proper operation |
| Material | Corrosion-resistant materials and potable-water certifications | Reduces leaching concerns and supports longer service life |
| Pressure and surge capacity | Rated operating pressure plus expected surge tolerance | Ensures safety under normal and peak conditions |
| Certifications | Required approvals for code, utility, or project specifications | Supports code compliance and regulatory acceptance |
| Source of purchase | Dealer authorization, paperwork, and warranty support | Provides documentation and warranty help after purchase |
| Warranty & Pricing | Coverage limits, pricing visibility, and replacement support | Protects investment and clarifies purchase cost |
Final Thoughts
ASSE 1022 double-check valves can be compact solutions for low-risk backflow prevention when approved by the local authority. 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.
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. Correct selection can simplify permitting, reduce rework, and improve potable-water protection.
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. Buy certified products from trusted suppliers or authorized dealers. 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. When supported by certified devices and qualified testers, these steps help protect 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.