The Asse 1022 Dual Check Valve is a small-footprint, 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 1022 Backflow Preventer
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 often chosen because it is easy to install. This guide compares Asse 1022 devices alongside higher-protection standards, including 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.
Two main hydraulic causes lead to backflow incidents. 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.
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 such as the Asse 1022 are intended for low-hazard backflow 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.
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 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. Where hazards are higher, more protective devices are required.
| Backflow Issue | Typical Cause | Suggested Protection |
|---|---|---|
| Reverse flow from suction | Supply pressure drop from mains, firefighting, or line breaks | Asse 1022 Backflow Preventer for low-hazard use, or air gap where code requires |
| Backpressure | Downstream pressure from pumps, tanks, or thermal expansion | Asse 1022 where low-hazard is approved, or RPZ where health hazards exist |
| Drinking-water contamination risk | Irrigation fertilizer, boiler treatment chemicals, or process fluids | Evaluate the cross-connection and install the approved protection level |
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. Both conditions can introduce contaminants and threaten potable water quality.
Why Dual Check Valves Are Used For Low-Hazard Protection
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.
Understanding The 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 features two independent, spring-loaded check valves in series. That arrangement helps stop reverse flow and gives the device a second sealing point. 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 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. The Asse 1022 Backflow Preventer fits tight spaces where larger assemblies cannot. Properly sized models can meet flow demands for common low-hazard applications.
Standards And Certifications Supporting 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 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.
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.
Comparing Related Standards And Products: 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.
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 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 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 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 | Asse 1013 Reduced Pressure Zone | Asse 1024 | Asse 1012 |
|---|---|---|---|---|
| Typical use | Low-hazard services like irrigation and some HVAC | High-risk contamination protection | Severe contamination risks requiring reduced-pressure principle | Certain service-line dual-check applications |
| Relative protection | Low hazard | High | High | Application-dependent low-to-moderate protection |
| Relief valve | No | Required relief valve | Yes, required | No, unless specified |
| Inspection requirement | Periodic testing of both checks | Annual testing and relief valve verification | Annual testing and relief checks | Testing as required by the water authority |
| Usual installations | Low-hazard cross-connections where allowed | Chemical feed and boiler makeup with toxic chemicals | Serious contamination scenarios with possible health impact | Service-line applications where dual-check protection is accepted |
| Authority preference | Accepted in many low-hazard cases | Commonly required for high-hazard conditions | 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. 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. That clearance allows certified testers or service technicians to reach fittings without unnecessary disassembly.
Follow good piping practices to avoid introducing new hazards. Do not place the device where downstream cross-connections can bypass or 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 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 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 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. 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. 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. 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 can provide genuine products, documentation, and warranty assistance. 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 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.
- Prefer components with NSF/ANSI 61 certification for potable systems.
- 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 Check | Why It Matters |
|---|---|---|
| Pipe size and flow | Line diameter, expected flow, and model capacity data | Helps avoid pressure drop and supports correct function |
| Material compatibility | 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 |
| Compliance markings | ASSE listing, NSF/ANSI 61, and UL/FM marks where needed | Supports code compliance and regulatory acceptance |
| Supplier | Supplier reputation, product authenticity, and technical help | Provides documentation and warranty help after purchase |
| Warranty terms and pricing rules | Coverage limits, pricing visibility, and replacement support | Prevents surprises and supports long-term ownership |
Summary
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.
Choosing the right device depends on hazard level and code compliance. Use an Asse 1022 Backflow Preventer for low-hazard scenarios. For high-hazard protection, use ASSE 1013, ASSE 1024, or reduced-pressure assemblies. 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. 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.