An Asse 1022 Dual Check Valve provides a practical 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. Using an approved device helps safeguard potable supplies while supporting compliance with local and national plumbing requirements.
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. 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 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.
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 drops and creates a vacuum that pulls water backward. 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 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.
Correct selection and installation depend on the applicable codes, listings, and standards. ASSE performance requirements, together with ANSI-accredited standards development, help 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. Where hazards are higher, more protective devices are required.
| Problem | Common Cause | Suggested Protection |
|---|---|---|
| Backsiphonage | 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 |
| Backpressure | Downstream pressure from pumps, 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 | Evaluate the cross-connection and install the approved protection level |
What Is Backflow And How It Occurs
Backflow is the backward movement of water from any source into the public supply. It can be caused by negative pressure or excessive downstream pressure. Both conditions can introduce contaminants and threaten potable 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 models include serviceable internal parts and replaceable seats. 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. 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.
Certifications And Standards Behind 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. This gives specifying engineers additional assurance.
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.
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 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. Use Asse 1012 standards when specifying certain dual-check products or service-line applications.
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 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. 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 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.
| Comparison Point | ASSE 1022 | Asse 1013 (RPZ) | Asse 1024 | ASSE 1012 Device |
|---|---|---|---|---|
| Primary use | Low-hazard services like irrigation and some HVAC | Health-hazard cross-connections requiring RPZ protection | Serious contamination threats requiring reduced-pressure protection | Certain service-line dual-check applications |
| Protection level | Lower protection level | High | High hazard | Application-dependent low-to-moderate protection |
| Relief feature | Not included | Includes atmospheric relief valve | Includes reduced-pressure relief valve | Not typically included unless the product standard specifies it |
| Typical testing | Periodic testing of both checks | Annual testing and relief valve verification | Regular testing with relief-valve checks | Testing as required by the water authority |
| Common applications | Low-hazard cross-connections where allowed | Boiler makeup, chemical feed, and health-hazard connections | Serious contamination scenarios with possible health impact | Service-line applications where dual-check protection is accepted |
| Authority preference | Permitted where local authority approves low-hazard use | Often required where contamination could affect health | 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. 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
Proper Asse 1022 installation begins with thorough planning. Place dual check valves in an easily accessible area and follow the manufacturer’s orientation guidelines. 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, 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 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. 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.
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 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.
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.
Where To Buy And Product Selection Guidance
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. Check manufacturer warranty limits, authorized-sale requirements, and MAP pricing rules that may prevent online price display. 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.
- Check the Asse 1022 Backflow Preventer pressure rating and surge tolerance before installation.
Trusted Suppliers
- 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.
| Selection Point | What to Verify | Reason It Matters |
|---|---|---|
| Size and Flow | Pipe size, peak GPM, and manufacturer sizing chart | Prevents pressure loss and ensures proper operation |
| Body and wetted material | Brass, bronze, or NSF/ANSI 61-certified plastics | Protects potable water quality and resists corrosion |
| Pressure Rating | Manufacturer pressure limits and site surge conditions | Reduces risk of damage during pressure changes |
| Compliance markings | ASSE listing, NSF/ANSI 61, and UL/FM marks where needed | Helps inspectors approve the installation more easily |
| Source of purchase | Authorized dealer, documentation, warranty handling | Reduces risk of counterfeit parts and improves after-sale support |
| Warranty & Pricing | Manufacturer warranty details, MAP pricing policies | Protects investment and clarifies purchase cost |
Summary
ASSE 1022 double-check valves can be compact solutions for low-risk backflow prevention when approved by the local authority. 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 risk in approved uses such as irrigation systems and certain 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. 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. Purchase certified products from trusted suppliers. 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 an Asse 1022 Dual Check Valve or other approved backflow solution perform reliably over time.