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 1022
Manufacturers such as Watts produce backflow preventers that meet ASSE performance requirements and certifications. Depending on the model and application, approvals may include NSF/ANSI 61, UL, FM, or similar third-party listings. Those credentials help verify material safety, pressure durability, and overall assembly performance. 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 often chosen because it is easy to install. This guide contrasts 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.
Understanding Backflow And How Dual Check Valves Help
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.
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 non-health-hazard backflow protection. They are used where reverse flow might affect taste, odor, or water quality without creating a direct health hazard. The Asse 1022 Backflow Preventer is a compact solution for many applications identified in plumbing codes.
Correct selection and installation depend on the applicable codes, listings, and standards. ASSE performance requirements and ANSI-accredited development support product acceptance. Installers should follow local plumbing-code language and relevant guidance, such as the 2018 UPC and AWWA M-14, when applying 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.
| Issue | Cause | Typical Protection |
|---|---|---|
| Backsiphonage | Negative supply pressure caused by line breaks, mains work, or heavy demand | Asse 1022 Backflow Preventer or air gap where required |
| Backflow caused by pressure imbalance | Booster pumps, elevated tanks, or thermal expansion | Asse 1022 for low-hazard; RPZ for high-hazard |
| Potable water contamination risk | 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. 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. This redundancy protects low-hazard cross-connections against 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.
Understanding The 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 How The Valve Works
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. 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.
Built-in test ports and compact bodies support quick installation and routine inspection. 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 define baseline performance tests, functional requirements, and operating thresholds. Those tests are used to verify dependable operation under defined conditions. Many listed products exceed minimum requirements, which may reduce failure risk and support longer maintenance intervals.
NSF/ANSI 61 certification confirms materials are safe for drinking water and helps prevent harmful contaminant leaching. 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 project teams seeking verified material safety and tested performance, ASSE 1022 features, NSF/ANSI 61, and UL/FM marks create a strong compliance package.
Comparing Related Standards And Products: ASSE 1013, ASSE 1012, And ASSE 1024
This section compares common backflow-protection options so the device can be matched to the hazard level and code requirement. It explains practical differences among RPZ assemblies, double-check devices, and other dual-check products used in U.S. plumbing systems.
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. 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. 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 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 a similar relief-valve concept for severe or broader contamination risks.
Testing frequency and complexity differ between these products. Asse 1013 RPZ units commonly require annual testing, post-event checks, and relief-valve verification. Double-check assemblies under ASSE 1022 require periodic testing to confirm both checks operate, with simpler procedures than RPZ testing.
When ASSE 1012 Or Other Dual-Check Standards Apply
Asse 1012 covers requirements for selected dual-check configurations used in low- or moderate-hazard applications. Use this category when local code or the water authority accepts a dual-check style but specifies a different recognized standard beyond ASSE 1022.
Codes vary by jurisdiction. 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. Before installation, confirm the required protection level with the local water authority or authority having jurisdiction.
| Comparison Point | Asse 1022 | Asse 1013 (RPZ) | Asse 1024 | Asse 1012 |
|---|---|---|---|---|
| Main application | Low-hazard services like irrigation and some HVAC | 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-protection reduced-pressure level | Low to moderate |
| Relief valve | No relief valve | Includes atmospheric relief valve | Includes reduced-pressure relief valve | No, unless specified |
| Inspection requirement | Periodic testing of both checks | Annual testing and relief valve verification | Regular testing with relief-valve checks | Testing as required by the water authority |
| Usual installations | Residential irrigation and selected HVAC makeup lines | Boiler makeup, chemical feed, and health-hazard connections | Serious contamination scenarios with possible health impact | Service-line applications where dual-check protection is accepted |
| Authority preference | Accepted in many low-hazard cases | Often required where contamination could affect health | Required for serious contamination threats | Applied when the authority requires this dual-check standard |
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.
Installation, Maintenance, And Code Compliance
A correct Asse 1022 installation starts with careful planning. Place dual check valves in an easily accessible area and follow the manufacturer’s orientation guidelines. Leave adequate clearance for service access, testing ports, shutoffs, 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. Do not place the device where downstream cross-connections can bypass or 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. Detailed records of service and test results are important for proving compliance during audits and permit reviews.
Certified testers provide documented evidence that satisfies most regulatory 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.
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 starting, identify the applicable plumbing code edition and local water authority requirements. Some locations may require an RPZ instead of a dual check. 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 makes future inspections easier and supports clear 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. 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 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.
Certification checks simplify approval and inspection. Confirm that the product lists ASSE 1022 compliance and NSF/ANSI 61 certification. If the local authority requires UL or FM approvals, verify those markings before buying.
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 coverage and pricing rules can affect the final purchase 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.
Material Selection Tips
- 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.
Trusted Suppliers
- 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 Factor | What to Check | Why It Helps |
|---|---|---|
| Size and Flow | Pipe diameter, GPM requirements, model sizing chart | Ensures the device can handle demand without unnecessary restriction |
| Material compatibility | Approved metals or certified plastics for potable water | Reduces leaching concerns and supports longer service life |
| Pressure Rating | Rated operating pressure plus expected surge tolerance | Ensures safety under normal and peak conditions |
| Approvals and listings | Required approvals for code, utility, or project specifications | Simplifies permitting and meets code requirements |
| Source of purchase | Supplier reputation, product authenticity, and technical help | Ensures genuine Asse 1022 Backflow Preventer and post-sale support |
| Warranty terms and pricing rules | Coverage limits, pricing visibility, and replacement support | Helps buyers understand total cost and warranty protection |
Final Thoughts
ASSE 1022 double-check valves can be space-saving solutions for low-risk backflow prevention when approved by the local authority. An Asse 1022 Dual Check Valve uses two spring-loaded check mechanisms and approved materials that may meet NSF/ANSI 61 and ASSE requirements. This helps reduce contamination risk in approved uses such as irrigation systems and certain HVAC makeup lines.
Choosing the right device depends on hazard level and code compliance. 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.
For backflow-prevention compliance, follow manufacturer instructions and local plumbing-code requirements. 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.
Correct device selection, precise installation, and regular maintenance are essential. When supported by certified devices and qualified testers, these steps help protect 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.
