The Asse 1022 Dual Check Valve is a space-saving, code-aware solution for potable water backflow protection. It is designed to reduce reverse flow that could carry contaminants, corrosive substances, or carbonic acid into drinking-water lines. Using an approved device helps safeguard potable supplies while supporting compliance with local and national plumbing requirements.
Asse 1022
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 cost-effective to maintain. This guide explains Asse 1022 devices alongside higher-protection standards, including 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 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 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 proper protection, these connections can become sources of pollutants.
Dual check valves such as the Asse 1022 are intended for lower-risk 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. Where hazards are higher, more protective devices are required.
| Issue | Common Cause | Suggested Protection |
|---|---|---|
| Backsiphonage | Main pressure loss from firefighting, broken lines, or supply interruption | Asse 1022 Backflow Preventer for low-hazard use, or air gap where code requires |
| Reverse flow from downstream pressure | Pressure created by booster systems, elevated storage, or heated closed systems | Asse 1022 for low-hazard; RPZ for high-hazard |
| Risk to potable water quality | 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 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
A dual check valve uses two separate check mechanisms inside a single valve body. That built-in redundancy helps protect low-hazard cross-connections from 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 features two independent, spring-loaded check valves in series. This arrangement prevents reverse flow and provides redundant sealing. It also supports serviceability while reducing contamination risk during pressure changes, brief backpressure events, or short disruptions.
Key Features And How The Valve Works
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.
Compact bodies, service access, and built-in test ports can make installation and inspection faster. 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. 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. This gives specifying engineers additional assurance.
Together with ANSI-accredited standards development, these approvals can improve acceptance of an Asse 1022 Dual Check Valve in specifications and code reviews. 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 section compares common backflow-protection options so the device can be matched to the hazard level and code requirement. 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. 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.
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. Double-check assemblies under ASSE 1022 require periodic testing to confirm both checks operate, with simpler procedures than RPZ testing.
When ASSE 1012 And Other Dual-Check Standards Apply
Asse 1012 defines requirements for certain dual-check configurations used in low- to moderate-hazard settings. 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.
| Feature | ASSE 1022 | Asse 1013 Reduced Pressure Zone | ASSE 1024 Device | ASSE 1012 Device |
|---|---|---|---|---|
| Typical use | Low-risk potable-water cross-connections | High-risk contamination protection | Severe contamination risks requiring reduced-pressure principle | Specific dual-check uses allowed by local authority |
| Relative protection | Lower protection level | High | High-protection reduced-pressure level | Low to moderate |
| Relief feature | Not included | Includes atmospheric relief valve | Required relief feature | No, unless specified |
| Typical testing | Routine check-mechanism verification | Annual and post-event testing with relief verification | Regular testing with relief-valve checks | Testing as required by the water authority |
| Usual installations | 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 |
| Common code treatment | Often allowed for low-hazard applications | Mandated for high-hazard by many water authorities | Specified for severe hazard protection | Applied when the authority requires this dual-check standard |
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. 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. That clearance allows certified testers or service technicians to reach 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 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. 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.
Establish a consistent record-keeping routine. 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.
Where To Buy And Product Selection Guidance
Choosing the right device means matching size, pressure rating, and materials to the plumbing system. 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 essential for potable water systems. Use brass, bronze, or NSF/ANSI 61-certified plastics to reduce corrosion risk and avoid harmful leaching. Check manufacturer data for chemical resistance, especially if local water chemistry is aggressive or unusual.
Verifying certifications can make approval and inspection easier. Confirm that the product lists ASSE 1022 compliance and NSF/ANSI 61 certification. 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 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. Check manufacturer warranty limits, authorized-sale requirements, and MAP pricing rules that may prevent online price display. Some stores require cart checkout to reveal final pricing while preserving full warranty through authorized sales channels.
How To Choose Materials
- Select an Asse 1022 Dual Check Valve model that matches pipe size, flow rate, and installation layout.
- 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.
- Choose vendors that offer sizing support and warranty handling.
- Installation Parts Supply commonly offers certified stock and practical model-selection guidance.
| Buying Factor | What to Verify | Why It Matters |
|---|---|---|
| Sizing and flow demand | Line diameter, expected flow, and model capacity data | Ensures the device can handle demand without unnecessary restriction |
| Body and wetted material | Corrosion-resistant materials and potable-water certifications | Protects potable water quality and resists corrosion |
| Pressure Rating | Rated operating pressure plus expected surge tolerance | Ensures safety under normal and peak conditions |
| Approvals and listings | Required approvals for code, utility, or project specifications | Helps inspectors approve the installation more easily |
| Distributor or dealer | Authorized dealer, documentation, warranty handling | Reduces risk of counterfeit parts and improves after-sale support |
| Warranty & Pricing | Warranty terms, authorized-sale rules, and final cart price | Prevents surprises and supports long-term ownership |
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.
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 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. 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 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.