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 protect 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. 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 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 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 is a significant threat to water systems because it allows treated water to move backward. 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 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 settings add booster pumps, closed-loop HVAC systems, and process equipment. 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 help prevent contaminants that may affect taste or odor but are not considered a direct health risk. 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 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.
| Problem | Cause | Typical 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 | Downstream pressure from pumps, tanks, or thermal expansion | Dual check protection for low risk, or reduced-pressure protection for high risk |
| Potable water contamination risk | Fertilizers, boiler chemicals, cleaning agents, or process liquids | Classify the hazard and use Asse 1022 or a higher-protection assembly |
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. Both conditions can introduce contaminants and threaten potable 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. 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 Overview
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 maintains serviceability and reduces contamination risk during pressure shifts or brief backpressure events.
Key Features And How The Valve Works
Spring-loaded checks provide positive closure under changing flow and pressure. Many models include serviceable internal parts and replaceable seats. This design reduces maintenance time and lifecycle 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. It meets flow requirements for typical low-hazard applications.
Certifications And Standards Behind ASSE 1022 Devices
ASSE standards define baseline performance tests, functional requirements, and operating thresholds. These tests verify reliable operation. 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.
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.
Comparison With Related Standards And Products: ASSE 1013, ASSE 1012, 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.
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.
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 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. Double-check assemblies under ASSE 1022 require periodic testing to confirm both checks operate, with simpler procedures than RPZ testing.
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 Reduced Pressure Zone | ASSE 1024 Device | ASSE 1012 Device |
|---|---|---|---|---|
| Main application | Low-hazard irrigation and selected HVAC makeup lines | High-risk contamination protection | Severe backflow hazards needing relief-valve protection | Certain service-line dual-check applications |
| Hazard protection | Low | High hazard | High | Application-dependent low-to-moderate protection |
| Atmospheric relief | No | Required relief valve | Includes reduced-pressure relief valve | Not typically included unless the product standard specifies it |
| Inspection requirement | Periodic testing of both checks | Annual and post-event testing with relief verification | Regular testing with relief-valve checks | Periodic testing per authority rules |
| Common applications | Irrigation and makeup water for noncritical HVAC | Boiler makeup, chemical feed, and health-hazard connections | Serious contamination scenarios with possible health impact | Service-line applications where dual-check protection is accepted |
| Code preference | 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. 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.
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. Avoid installing devices where downstream cross-connections could 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 schedules are set by local regulations and water authority directives. 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. AWWA M-14 can be used as a reference for inspection, maintenance, and backflow-prevention practices. Following recognized guidance can help reduce downtime and identify wear before it becomes a leak or failure.
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 permitting requirements and verify that the selected Asse 1022 installation meets local standards before work begins.
Establish a consistent record-keeping routine. 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 Product Selection Guidance
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. Check pressure ratings against maximum working pressure, surge conditions, and site-specific operating conditions.
Material compatibility is a key consideration in 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.
Certification checks simplify approval and inspection. Confirm that the product lists ASSE 1022 compliance and NSF/ANSI 61 certification. 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 terms and pricing policies affect final 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.
- Check the Asse 1022 Backflow Preventer pressure rating and surge tolerance before installation.
Reliable Supplier Tips
- Buy from certified dealers to ensure inspection documentation.
- 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 | Reason It Matters |
|---|---|---|
| Pipe size and flow | Pipe diameter, GPM requirements, model sizing chart | Prevents pressure loss and ensures proper operation |
| Body and wetted material | Brass, bronze, or NSF/ANSI 61-certified plastics | Reduces leaching concerns and supports longer service life |
| Pressure and surge capacity | Maximum working pressure and surge capacity | Supports safe operation during everyday use and pressure spikes |
| Approvals and listings | Required approvals for code, utility, or project specifications | Simplifies permitting and meets code requirements |
| Distributor or dealer | Dealer authorization, paperwork, and warranty support | Reduces risk of counterfeit parts and improves after-sale support |
| Warranty terms and pricing rules | Warranty terms, authorized-sale rules, and final cart price | Helps buyers understand total cost and warranty protection |
Summary
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.
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 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.