An Asse 1022 Dual Check Valve provides a compact way to support potable-water backflow protection where local code allows it. It helps prevent contaminants and corrosive substances, such as carbonic acid, from entering drinking water. 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. 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 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 How Dual Check Valves Help
Backflow creates a potentially harmful risk because water can reverse direction inside a plumbing system. This reverse movement can introduce contaminants into plumbing and compromise drinking-water safety. 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. Knowing the difference between backsiphonage and backpressure matters because each condition can call for a different type of protection.
In homes, common cross-connections include irrigation systems, garden hoses, boilers, and chemical injection points. 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 non-health-hazard 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 and ANSI-accredited development 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.
| Issue | Cause | Suggested Protection |
|---|---|---|
| Backflow caused by suction | Supply pressure drop from mains, firefighting, or line breaks | Asse 1022 Backflow Preventer or air gap where required |
| Reverse flow from downstream pressure | Downstream pressure from pumps, tanks, or thermal expansion | Dual check protection for low risk, or reduced-pressure protection for high risk |
| Risk to potable water quality | Chemical injection, treated boiler water, irrigation additives, or industrial fluids | Classify the hazard and use Asse 1022 or a higher-protection assembly |
What Backflow Is And How It Happens
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 Suit 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 also supports serviceability while reducing contamination risk during pressure changes, brief backpressure events, or short disruptions.
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 offer units in several materials, including bronze, brass, corrosion-resistant metals, and engineered plastics. Available sizes are designed to match common pipe diameters, pressure ratings, and potable-water system requirements.
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. 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. 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 confirms materials are safe for drinking water and helps prevent harmful contaminant leaching. UL/FM approvals validate durability and performance under pressure and stress testing. 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.
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 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.
ASSE 1022 Versus 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 the same relief concept but apply to a broader set of severe 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. 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 accept ASSE 1022 in low-hazard cases or require Asse 1012-certified dual-check devices for certain service lines. Before installation, confirm the required protection level with the local water authority or authority having jurisdiction.
| Comparison Point | ASSE 1022 Device | Asse 1013 (RPZ) | ASSE 1024 Device | ASSE 1012 Device |
|---|---|---|---|---|
| Primary use | Low-hazard irrigation and selected HVAC makeup lines | High-hazard cross-connections and health-risk protection | Severe backflow hazards needing relief-valve protection | Dual-check configurations for specific service applications |
| Protection level | Low | High hazard | High hazard | Low to moderate |
| Atmospheric relief | Not included | Includes atmospheric relief valve | Yes, required | No, unless specified |
| Inspection requirement | Routine check-mechanism verification | More rigorous annual RPZ testing | Annual testing and relief checks | Testing as required by the water authority |
| Typical applications | Residential irrigation and selected HVAC makeup lines | Chemical feed and boiler makeup with toxic chemicals | Serious contamination scenarios with possible health impact | Specific service uses approved by local code or utility |
| Common code treatment | Often allowed for low-hazard applications | Often required where contamination could affect health | Required for serious contamination threats | Selected where code or utility language specifically calls for it |
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.
Installation, Maintenance, And Code Compliance
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. This lets certified testers access 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 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 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 installation ratings are often accepted more readily by plumbing inspectors. UL/FM compliance may also be important for commercial, industrial, or fire-protection connections that require third-party recognition.
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 permitting requirements and verify that the selected Asse 1022 installation meets local standards before work begins.
Create a consistent record-keeping process for the device. 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
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. 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 the local authority requires UL or FM approvals, verify those markings before buying.
Supplier reputation matters when purchasing an ASSE 1022 device. Authorized dealers can provide genuine products, documentation, and warranty assistance. Installation Parts Supply is a reputable distributor that stocks certified units and can help 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 suppliers show final pricing only in the cart while still preserving warranty coverage 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.
- Verify pressure rating and surge tolerance for the Asse 1022 Backflow Preventer.
How To Choose A Supplier
- Buy from certified dealers to ensure inspection documentation.
- Choose vendors that offer sizing support and warranty handling.
- Installation Parts Supply commonly offers certified stock and practical model-selection guidance.
| Selection Point | What to Check | Reason It Matters |
|---|---|---|
| Pipe size and flow | Pipe size, peak GPM, and manufacturer sizing chart | Helps avoid pressure drop and supports correct function |
| Material compatibility | Brass, bronze, or NSF/ANSI 61-certified plastics | Reduces leaching concerns and supports longer service life |
| Working pressure rating | Maximum working pressure and surge capacity | Ensures safety under normal and peak conditions |
| Certifications | ASSE 1022 compliance, NSF/ANSI 61 certification, UL/FM when required | Supports code compliance and regulatory acceptance |
| Source of purchase | Supplier reputation, product authenticity, and technical help | Ensures genuine Asse 1022 Backflow Preventer and post-sale support |
| Warranty & Pricing | Warranty terms, authorized-sale rules, and final cart price | Protects investment and clarifies purchase cost |
Final Thoughts
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 risks in irrigation and some HVAC makeup lines.
Correct device selection depends on hazard classification, code requirements, and water-authority approval. An Asse 1022 Backflow Preventer is appropriate for low-hazard scenarios where it is allowed. For high-hazard protection, use ASSE 1013, ASSE 1024, or reduced-pressure assemblies. Proper selection streamlines permitting and improves water-system safety.
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. Buy certified products from trusted suppliers or authorized dealers. 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.