The Asse 1022 Dual Check Valve is a compact, 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 preserve potable supplies while supporting compliance with local and national plumbing requirements.
Asse 1013
Backflow preventer manufacturers, including Watts, make devices that are built to meet ASSE performance requirements and recognized 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 approved 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 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.
Backflow Basics And The Role Of Dual Check Valves
Backflow creates a important 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. 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 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 are used where reverse flow might affect taste, odor, or water quality without creating a direct health hazard. 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.
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.
| Problem | Typical Cause | Recommended Protection |
|---|---|---|
| Backflow caused by suction | Supply pressure drop from mains, firefighting, or line breaks | 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 |
| Risk to potable water quality | Chemical injection, treated boiler water, irrigation additives, or industrial fluids | Evaluate the cross-connection and install the approved protection level |
What Is Backflow And How It Occurs
Backflow means water moves in reverse from a fixture, device, or private system toward 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 Dual Check Valves Are Used For Low-Hazard Protection
A dual check valve uses two separate check mechanisms inside a single valve 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 maintains serviceability and reduces contamination risk during pressure shifts or brief backpressure events.
Key Features And How The Valve Works
Spring-loaded check mechanisms help the valve close positively when flow or pressure changes. 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.
Built-in test ports and compact bodies support quick installation and routine inspection. The Asse 1022 Backflow Preventer fits tight spaces where larger assemblies cannot. It meets flow requirements for typical low-hazard applications.
Standards And Certifications Supporting 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 validate durability and performance under pressure and stress testing. 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 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 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 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.
ASSE 1022 Versus 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 a similar relief-valve concept for severe or broader 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. Double-check assemblies under ASSE 1022 require periodic testing to confirm both checks operate, with simpler procedures than RPZ testing.
When ASSE 1012 And 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 that follow the 2018 UPC require ASSE 1013 RPZ assemblies for high-hazard cross-connections. Utilities may accept ASSE 1022 in low-hazard cases or require Asse 1012-certified dual-check devices for certain service lines. Always confirm requirements with the local water authority before installation.
| Feature | ASSE 1022 Device | Asse 1013 Reduced Pressure Zone | 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 | Certain service-line dual-check applications |
| Protection level | Low | High | High hazard | Low or moderate hazard |
| Relief feature | No | Required relief valve | Required relief feature | No, unless specified |
| Testing approach | Periodic testing of both checks | Annual and post-event testing with relief verification | Annual reduced-pressure assembly testing | Inspection frequency set by local requirements |
| Common applications | Low-hazard cross-connections where allowed | Chemical feed and boiler makeup with toxic chemicals | Reduced-pressure protection for severe hazard sources | Service-line applications where dual-check protection is accepted |
| Common code treatment | Permitted where local authority approves low-hazard use | Commonly required for high-hazard conditions | Required for serious contamination threats | Applied when the authority requires this dual-check standard |
For an ASSE 1022 comparison with RPZ units, consider both safety margin and testing needs. 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. 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. 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. Keep unions and test cocks accessible for inspections, service work, and backflow testing.
Maintenance schedules are set by local regulations and water authority directives. 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. 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.
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 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.
Create a consistent record-keeping process for the device. Keep manufacturer cut sheets, test certificates, repair invoices, and a location map together. This makes future inspections easier and supports clear compliance during regulatory reviews.
Where To Buy And How To Select The Right Product
Selecting the right device requires matching pipe size, pressure rating, material, and system demand. Confirm that the Asse 1022 Dual Check Valve matches the pipe diameter and peak-flow requirement. Also compare pressure ratings with maximum working pressure and expected surge conditions.
Material compatibility is essential for 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.
Verifying certifications can make approval and inspection easier. 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. 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.
Material Selection Tips
- 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.
- 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.
- Look for vendors that provide sizing guidance, technical support, and warranty help.
- Installation Parts Supply commonly offers certified stock and practical model-selection guidance.
| Buying Factor | What to Verify | Why It Matters |
|---|---|---|
| Size and Flow | Pipe diameter, GPM requirements, model sizing chart | Helps avoid pressure drop and supports correct function |
| Material | Approved metals or certified plastics for potable water | Protects potable water quality and resists corrosion |
| Pressure and surge capacity | Manufacturer pressure limits and site surge conditions | Supports safe operation during everyday use and pressure spikes |
| Certifications | ASSE listing, NSF/ANSI 61, and UL/FM marks where needed | Helps inspectors approve the installation more easily |
| Source of purchase | Authorized dealer, documentation, warranty handling | 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 |
Summary
ASSE 1022 double-check valves can be dependable 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 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. 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. 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.
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 support regulatory acceptance. Following these practices helps an Asse 1022 Dual Check Valve or other approved backflow solution perform reliably over time.