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. 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 reliable 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 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 creates a serious 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. 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 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.
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.
Common approved uses may include residential irrigation, HVAC makeup water, and selected commercial low-hazard cross-connections. When the hazard level is higher, authorities typically require a more protective assembly.
| Issue | Cause | Suggested Protection |
|---|---|---|
| Reverse flow from suction | Main pressure loss from firefighting, broken lines, or supply interruption | Approved Asse 1022 device where allowed, or an air gap for stricter protection |
| 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 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 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 meet performance criteria for nuisance-level risks and are common where codes allow double-check assemblies.
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 uses two independent spring-loaded checks arranged 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 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.
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. It meets flow requirements for typical 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 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.
Together with ANSI-accredited standards development, these approvals can improve acceptance of an Asse 1022 Dual Check Valve in specifications and code reviews. 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 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.
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. Use Asse 1012 standards when specifying certain dual-check products or service-line applications.
How ASSE 1022 Differs From ASSE 1013 And ASSE 1024 Devices
ASSE 1022 double-check assemblies use two check valves and shutoff valves to prevent backflow in low-hazard situations. 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.
Where ASSE 1012 Or Similar Standards May Be Used
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. 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 | ASSE 1012 Device |
|---|---|---|---|---|
| Main application | Low-risk potable-water cross-connections | Health-hazard cross-connections requiring RPZ protection | Severe backflow hazards needing relief-valve protection | Specific dual-check uses allowed by local authority |
| Hazard protection | Lower protection level | High | High hazard | Low to moderate |
| Atmospheric relief | No | Required relief valve | Yes, required | No, unless specified |
| Inspection requirement | Periodic testing of both checks | Annual and post-event testing with relief verification | Annual reduced-pressure assembly testing | Testing as required by the water authority |
| Typical applications | Irrigation and makeup water for noncritical HVAC | Chemical feed and boiler makeup with toxic chemicals | Reduced-pressure protection for severe hazard sources | Specific service uses approved by local code or utility |
| Code preference | Accepted in many low-hazard cases | Mandated for high-hazard by many water authorities | 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. 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. Dual check valves should be installed where they are accessible and oriented according to the manufacturer’s instructions. Leave adequate clearance for service access, testing ports, shutoffs, and unions. This lets certified testers access 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. 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 areas require annual inspections and backflow tests by certified 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. Some locations may require an RPZ instead of a dual check. 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. 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
Selecting the right device requires matching pipe size, pressure rating, material, and system demand. Make sure the Asse 1022 Dual Check Valve fits the pipe diameter and peak flow. Also compare pressure ratings with maximum working pressure and expected surge 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. Review the manufacturer’s chemical-resistance data for local water chemistry.
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.
Consider supplier reputation when buying ASSE 1022 devices. 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. 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
- 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.
Reliable Supplier Tips
- 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 | Details to Confirm | Reason It Matters |
|---|---|---|
| Size and Flow | Pipe diameter, GPM requirements, model sizing chart | Helps avoid pressure drop and supports correct function |
| Material compatibility | Approved metals or certified plastics for potable water | Reduces leaching concerns and supports longer service life |
| Pressure Rating | Manufacturer pressure limits and site surge conditions | Supports safe operation during everyday use and pressure spikes |
| Compliance markings | ASSE 1022 compliance, NSF/ANSI 61 certification, UL/FM when required | Simplifies permitting and meets code requirements |
| Source of purchase | Dealer authorization, paperwork, and warranty support | Reduces risk of counterfeit parts and improves after-sale support |
| Warranty and final cost | Coverage limits, pricing visibility, and replacement support | Prevents surprises and supports long-term ownership |
Conclusion
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.
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. Proper selection streamlines permitting and improves water-system safety.
For backflow-prevention compliance, follow manufacturer instructions and local plumbing-code requirements. 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.
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.