The Asse 1022 Dual Check Valve is a space-saving, 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 reliable low-hazard option where the local authority permits it.
The Asse 1022 Dual Check Valve is often chosen because it is cost-effective to maintain. 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.
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. Water authorities and adopted plumbing codes require backflow protection to help prevent this kind of 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, including the Asse 1022 model, are designed for low-hazard 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.
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. Where hazards are higher, more protective devices are required.
| Issue | Typical Cause | Recommended Protection |
|---|---|---|
| Reverse flow from suction | Negative supply pressure caused by line breaks, mains work, or heavy demand | Approved Asse 1022 device where allowed, or an air gap for stricter protection |
| Backflow caused by pressure imbalance | Pressure created by booster systems, elevated storage, or heated closed systems | Asse 1022 for low-hazard; RPZ for high-hazard |
| Potable water contamination risk | Fertilizers, boiler chemicals, cleaning agents, or process liquids | 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 Dual Check Valves Suit Low-Hazard Protection
Dual check valves provide two independent check mechanisms in one body. This redundancy protects low-hazard cross-connections against reverse flow. Asse 1022 devices are tested for low-hazard or nuisance-level risks and are commonly used where the authority allows this type of protection.
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 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 units are built with serviceable internals, replaceable seats, or removable parts. This design reduces maintenance time and lifecycle 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. An Asse 1022 Backflow Preventer can fit into tight locations where larger backflow assemblies may not be practical. Properly sized models can meet flow demands for common low-hazard applications.
Standards And Certifications Supporting 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 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 assemblies suit low-hazard services such as irrigation and some HVAC makeup lines. By contrast, Asse 1013 RPZ units are designed for high-hazard cross-connections where contaminants could create a health risk. 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 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 allow ASSE 1022 for low-hazard applications or specify Asse 1012-certified dual-check devices for certain service-line uses. Before installation, confirm the required protection level with the local water authority or authority having jurisdiction.
| Feature | ASSE 1022 Device | ASSE 1013 RPZ | ASSE 1024 Device | Asse 1012 Dual-Check Standard |
|---|---|---|---|---|
| Primary use | Low-hazard services like irrigation and some HVAC | High-risk contamination protection | Serious contamination threats requiring reduced-pressure protection | Certain service-line dual-check applications |
| Hazard protection | Low | High hazard | High-protection reduced-pressure level | Low to moderate |
| Relief valve | Not included | Required relief valve | Includes reduced-pressure relief valve | No, unless specified |
| Inspection requirement | Routine check-mechanism verification | More rigorous annual RPZ testing | Annual testing and relief checks | Inspection frequency set by local requirements |
| Common applications | Irrigation and makeup water for noncritical HVAC | Chemical feed and boiler makeup with toxic chemicals | Severe contamination sources where health impact is possible | Specific service uses approved by local code or utility |
| Common code treatment | Accepted in many low-hazard cases | Mandated for high-hazard by many water authorities | Used where serious contamination protection is required | Selected where code or utility language specifically calls for it |
When comparing ASSE 1022 with RPZ assemblies, consider the hazard level, safety margin, and testing burden. 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. Place dual check valves in an easily accessible area and follow the manufacturer’s orientation guidelines. 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 intervals are usually determined by local regulations, water authority rules, and site requirements. Many areas require annual inspections and backflow tests by certified professionals. Clear records of service, repairs, and test results help demonstrate compliance during audits, inspections, and permit reviews.
Certified testers provide documented evidence that satisfies most regulatory 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 installation ratings are often accepted more readily by plumbing inspectors. 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.
Establish a consistent record-keeping routine. 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
Choosing the right device means matching size, pressure rating, and materials to the plumbing system. 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 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.
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 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.
How To Choose Materials
- 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.
Reliable Supplier Tips
- Buy from certified dealers to ensure inspection documentation.
- Choose vendors that offer sizing support and warranty handling.
- Installation Parts Supply often provides certified stock and model guidance.
| Buying Factor | What to Verify | Reason It Matters |
|---|---|---|
| Pipe size and flow | Line diameter, expected flow, and model capacity data | Prevents pressure loss and ensures proper operation |
| Material compatibility | Brass, bronze, or NSF/ANSI 61-certified plastics | Protects potable water quality and resists corrosion |
| Working pressure rating | Rated operating pressure plus expected surge tolerance | Reduces risk of damage during pressure changes |
| Approvals and listings | Required approvals for code, utility, or project specifications | Helps inspectors approve the installation more easily |
| Supplier | Authorized dealer, documentation, warranty handling | Provides documentation and warranty help after purchase |
| Warranty terms and pricing rules | Manufacturer warranty details, MAP pricing policies | 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. 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. Correct selection can simplify permitting, reduce rework, and improve potable-water protection.
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. Verify ASSE, NSF/ANSI 61, and UL or FM listings for approvals and reliability.
Reliable backflow protection depends on correct selection, accurate installation, and routine maintenance. These steps, supported by certified devices and qualified testers, help safeguard potable water. They also support regulatory acceptance. Following these practices helps the Asse 1022 Dual Check Valve or other backflow solutions perform reliably.