To choose nine reliable backflow test kits, start with Watts TK9A or TK-9A for built‑in line pressure gauges and full assemblies, then consider Arbiter Mako MK5 for a brass, 5‑valve option with digital readout. Add Mid-West 845‑5 or BAC‑FLO‑5 for durability and 90‑micron filters. Include TK Plus for a calibration certificate, and ensure RPZ, DCV, PVB, SPVB compatibility. Each kit arrives with adapters and procedures; explore upgrades and warranties as you proceed. More specifics await.
| Watts TK9A Backflow Test Kit Upgrade with Line Pressure Gauge and Adapters |
| Professional Grade | Valve Count: 3-valve | Gauge Type: Differential gauge | Calibration/Certificate: Calibration certificate 1 year | VIEW LATEST PRICE | Read Our Analysis |
| Arbiter Mako MK5 Digital Backflow Test Kit |
| Digital Precision | Valve Count: 5-valve | Gauge Type: Digital gauge | Calibration/Certificate: Noted calibration capability (certified kit) | VIEW LATEST PRICE | Read Our Analysis |
| Mid-West 845-5 5-Valve Backflow Test Kit |
| Durable Classic | Valve Count: 5-valve | Gauge Type: Differential gauge | Calibration/Certificate: 5-year warranty (calibration not specified) | VIEW LATEST PRICE | Read Our Analysis |
| BAC-FLO-5 Backflow Test Kit |
| USA-Made Quality | Valve Count: 5-valve | Gauge Type: Analog gauge (calibration certificate with gauge) | Calibration/Certificate: Laminated calibration certificate 1 year | VIEW LATEST PRICE | Read Our Analysis |
| TK Plus Backflow Test Kit 3 Valve Plus High Pressure Gauge |
| Upgrade Option | Valve Count: 3-valve | Gauge Type: Differential gauge | Calibration/Certificate: Calibration certificate 1 year | VIEW LATEST PRICE | Read Our Analysis |
| BAC-FLO-3 Backflow Test Kit |
| Robust US-Made | Valve Count: 3-valve | Gauge Type: Differential gauge | Calibration/Certificate: Current calibration certificate 1 year | VIEW LATEST PRICE | Read Our Analysis |
| Watts TK-9A Backflow Preventer Test Kit with Gauge |
| Trusted Brand | Valve Count: 4-valve (note: TK-9A is a kit; listed as 3-valve in some descriptions, but TK-9A is widely described as 3-valve in the data) | Gauge Type: Dial gauge | Calibration/Certificate: ASIN product details; no explicit calibration certificate listed | VIEW LATEST PRICE | Read Our Analysis |
| Arbiter Backflow Test Kit with Hoses (MK3) |
| Compact Efficiency | Valve Count: 3-valve | Gauge Type: Digital gauge | Calibration/Certificate: Noted laminated procedures; no explicit certificate | VIEW LATEST PRICE | Read Our Analysis |
| MD.845-5 Test Kit Backflow Prevention 5 Valve Mid-West |
| OEM Compatibility | Valve Count: 5-valve | Gauge Type: Hydraulic/differential gauge | Calibration/Certificate: OEM/Authorized; Amazon return policy (implies warranty) | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Watts TK9A Backflow Test Kit Upgrade with Line Pressure Gauge and Adapters
The Watts TK9A Backflow Test Kit Upgrade with Line Pressure Gauge and Adapters is a strong choice for certified testers who need a complete, ready-to-use kit. You receive a 3-valve test kit with high, low, and bypass valves, plus an extra line pressure gauge and three testcock adapters. It ships fully assembled and includes a 4.5 PSID gauge, 0-15 scale, and calibration valid for one year. Use it for RPZ, DC, PVB, SPVB, RPDA, and DCDA assemblies. Follow the included configuration, record system pressure with the free gauge, and note that the aftermarket gauge isn’t Watts-endorsed.
- Valve Count:3-valve
- Gauge Type:Differential gauge
- Calibration/Certificate:Calibration certificate 1 year
- Hoses Included:3 hoses
- Case/Carrying:Carrying case included
- Made In / Origin:Domestic (Acugauge addition; Watts origin)
- Additional Feature:Extra line pressure gauge
- Additional Feature:Acugauge aftermarket gauge
- Additional Feature:Fully assembled shipping
Arbiter Mako MK5 Digital Backflow Test Kit
If you need a digital backflow test kit that combines precision with field durability, the Arbiter Mako MK5 Digital Backflow Test Kit stands out due to its 5-valve setup and sturdy brass construction. You set up the device with hoses and the hard shell case, then power on to capture readings. Use the CAPTURE button to store data, and rely on the BACKLIT DISPLAY for visibility in any light. Monitor the RATE OF CHANGE GRAPH to see when readings stabilize. Hang the unit with the SWIVEL HOOK, use FLEXIBLE HOSES, and verify accuracy to 0.1 psi within 0–15 psi. Certified readiness follows.
- Valve Count:5-valve
- Gauge Type:Digital gauge
- Calibration/Certificate:Noted calibration capability (certified kit)
- Hoses Included:Hoses included
- Case/Carrying:Hard shell case
- Made In / Origin:USA/US-made implied
- Additional Feature:Capture button
- Additional Feature:Backlit display
- Additional Feature:Rate of change graph
Mid-West 845-5 5-Valve Backflow Test Kit
Look for the Mid-West 845-5 5-Valve Backflow Test Kit when you need a compact, purpose-built tool for testing backflow prevention assemblies. This kit measures 18-1/2″ by 9″ by 9-3/4″ and is designed specifically for backflow testing. It uses soft-seated brass needle valves with replaceable seats, keeping calibration stable during use. It includes protective 90 micron filters to minimize plugging from scale or sand, and filter elements can be cleaned or replaced as needed. It carries a 5 year warranty, offering long-term durability. See more product details to confirm fit for your testing routine.
- Valve Count:5-valve
- Gauge Type:Differential gauge
- Calibration/Certificate:5-year warranty (calibration not specified)
- Hoses Included:Not stated explicitly (focus on valves)
- Case/Carrying:Case not specified
- Made In / Origin:Made in USA
- Additional Feature:5-valve design
- Additional Feature:Soft-seated brass valves
- Additional Feature:90 micron filters
BAC-FLO-5 Backflow Test Kit
Choose the BAC-FLO-5 Backflow Test Kit when you need a professional-grade set that covers measurement, calibration, mounting, and procedures in one package. You get a five-valve gauge engineered with over 30 years of experience, plus high pressure color-coded hoses with 90 micron removable filters. The kit includes a gauge, strap, case, 5-foot hoses, test fitting adapter set, calibration certificate, and laminated test procedures. It’s made in the USA and ships with a laminated calibration certificate valid for one year and a five-year warranty. Use it to conduct professional backflow tests confidently, with everything you need in one package.
- Valve Count:5-valve
- Gauge Type:Analog gauge (calibration certificate with gauge)
- Calibration/Certificate:Laminated calibration certificate 1 year
- Hoses Included:5-foot hoses
- Case/Carrying:Case included
- Made In / Origin:Made in USA
- Additional Feature:Laminated calibration certificate
- Additional Feature:High-pressure hoses
- Additional Feature:5-foot hoses included
TK Plus Backflow Test Kit 3 Valve Plus High Pressure Gauge
The TK Plus Backflow Test Kit 3 Valve Plus High Pressure Gauge stands out for its 3-needle valve configuration—high, low, and bypass—combined with a built-in high-pressure gauge, making it a practical choice for testers who need precise readings in varied setups. You receive this kit fully calibrated and assembled, ready to use. It ships with a calibration certificate valid for 1 year from shipment. A 30-day money-back guarantee and free returns support decision-making. Upgrade availability is offered at the price of TK9A, and you can take advantage of the free upgrade option when ordering.
- Valve Count:3-valve
- Gauge Type:Differential gauge
- Calibration/Certificate:Calibration certificate 1 year
- Hoses Included:Ships fully assembled (implied hoses)
- Case/Carrying:Ships fully assembled (case not explicit)
- Made In / Origin:Not specified
- Additional Feature:Free upgrade option
- Additional Feature:Ships fully calibrated
- Additional Feature:1-year calibration certificate
BAC-FLO-3 Backflow Test Kit
The BAC-FLO-3 Backflow Test Kit stands out for its complete, ready-to-use bundle that supports testing a wide range of backflow assemblies, including reduced pressure principle and double-check valve units. You receive a 3-valve gauge kit with brass needle valves, 90-micron filters, and 200 psig rating, plus a gauge, hoses, adapters, and laminated procedures. Use the test fittings to attach to standard test cocks, then verify accuracy with the 0-15 psid gauge. The kit comes with a calibration certificate and five-foot hoses. Store everything in the padded, organized case and rely on the five-year warranty for defects.
- Valve Count:3-valve
- Gauge Type:Differential gauge
- Calibration/Certificate:Current calibration certificate 1 year
- Hoses Included:Five-foot hoses
- Case/Carrying:Case included
- Made In / Origin:Made in USA
- Additional Feature:4.5 inch gauge
- Additional Feature:Brass test fittings
- Additional Feature:200 psig working pressure
Watts TK-9A Backflow Preventer Test Kit with Gauge
Watts TK-9A Backflow Preventer Test Kit with Gauge stands out for testing RPZAs and DCVAs with a compact, portable design. You use this kit to test RPZAs, DCVAs, pressure vacuum breakers, and spill-resistant vacuum breakers, following USC and ASSE 5000 standards. The kit includes a gauge, test valves, three hoses with female-threaded swivel couplings, three adapters, a securing strap, an instruction guide, and a carrying case. It weighs 8.66 pounds and measures 17.38 by 14.19 by 5.63 inches. Use the gauge for accurate readings, connect valves securely, and transport safely in the shock-resistant case.
- Valve Count:4-valve (note: TK-9A is a kit; listed as 3-valve in some descriptions, but TK-9A is widely described as 3-valve in the data)
- Gauge Type:Dial gauge
- Calibration/Certificate:ASIN product details; no explicit calibration certificate listed
- Hoses Included:3 hoses
- Case/Carrying:Carrying case
- Made In / Origin:Made by Watts (USA)
- Additional Feature:USC/ASSE 5000 standards
- Additional Feature:Shock-resistant carrying case
- Additional Feature:12.06 bar max pressure
Arbiter Backflow Test Kit with Hoses (MK3)
Arbiter Backflow Test Kit with Hoses (MK3) stands out for its CAPTURE BUTTON, which stores readings during a test so you don’t have to restart if the process is interrupted. You use the kit to perform backflow testing with three valves for efficient operation. The BACKLIT DISPLAY helps you read results in any lighting, and the reading stays consistent from different angles. The SWIVEL HOOK lets you hang the gauge on a pipe or ladder, keeping it accessible. FLEXIBLE HOSES reduce the need for adapters and reach tight spots, improving your workflow. Batteries are included for immediate use.
- Valve Count:3-valve
- Gauge Type:Digital gauge
- Calibration/Certificate:Noted laminated procedures; no explicit certificate
- Hoses Included:Hoses included
- Case/Carrying:Soft case
- Made In / Origin:Made by Arbiter (USA)
- Additional Feature:4 AA batteries included
- Additional Feature:Backlit display (MK3)
- Additional Feature:Swivel hook accessory
MD.845-5 Test Kit Backflow Prevention 5 Valve Mid-West
If you need a reliable backflow test kit with a precise, ready-to-use setup, consider the MD.845-5 Test Kit Backflow Prevention 5 Valve Mid-West. This kit is OEM authorized and fits with various Midwest Test Instruments models, with part number MD.845-5. It’s manufactured in the United States and weighs about 1 pound. Use the five hydraulic valves to control flow during testing, and rely on the included components to complete tests efficiently. No batteries are required, and you’ll benefit from straightforward compatibility and a clear warranty pathway via the product page. Check Amazon’s return policy if needed.
- Valve Count:5-valve
- Gauge Type:Hydraulic/differential gauge
- Calibration/Certificate:OEM/Authorized; Amazon return policy (implies warranty)
- Hoses Included:Not explicitly specified (5-foot hoses common in kits)
- Case/Carrying:Not specified
- Made In / Origin:Made in USA (OEM authorized)
- Additional Feature:OEM part number MD.845-5
- Additional Feature:Made in USA emphasis
- Additional Feature:Midwest compatibility focus
Factors to Consider When Choosing Backflow Preventer Test Kit
When selecting a backflow test kit, assess Kit Content Highlights first to confirm you have a complete, ready-to-use set, then check Valve Compatibility Range to ensure it fits your typical systems. Next, evaluate Pressure Gauge Quality and Certifications to guarantee accuracy and the manufacturer’s credibility, and review Warranty terms so you know what’s covered. Finally, consider Portability and Storage options to fit your workspace and choose a kit you can easily transport and organize.
Kit Content Highlights
Consider what’s included in a backflow test kit to ensure you can complete tests without extra purchases. A typical kit provides hoses, testcock adapters, a gauge, and a carrying case or strap for portability. Some kits ship fully assembled and may feature a 3-valve configuration (high, low, bypass) for testing different backflow assemblies. Gauges commonly have a differential range around 0-15 PSID with a 4.5-inch dial for readable pressure measurements. Additional adapters and fittings are included to connect to various test cocks and backflow assembly sizes. Calibration certificates are often provided, valid for 1 year, to verify gauge accuracy and kit reliability. Review these contents to confirm you can perform tests without scouring for missing items or replacements.
Valve Compatibility Range
To choose a backflow test kit that handles multiple backflow assemblies, start by confirming valve compatibility across common types like RPZ, DC, PVB, SPVB, RPDA, and DCDA. Ensure the kit supports 3- to 5-valve configurations to accurately measure differential pressures across test cocks. Inspect brass needle valves with replaceable seats and 90-micron filters, which improve reliability in difficult sites by reducing clogging from scale and debris. Verify gauge range and accuracy, typically 0-15 psi with ±0.2 psi, to match precise differential measurements. Check included test fittings and adapters for standard test cock sizes and compatible thread types, guaranteeing secure connections across manufacturers. Document each valve type supported and confirm installation steps for transitioning between assemblies.
Pressure Gauge Quality
A higher-quality backflow test kit uses a differential gauge with a 0-15 PSID range and accuracy around ±0.2 PSID to ensure precise readings across the typical testing range. Choose gauges with a clear 4.5-inch dial for easy reading and pair them with 90-micron removable filters to minimize clogging from scale, sand, or debris. Look for a calibration certificate valid for one year to verify accuracy and reduce drift between tests. Consider extra line pressure gauges to record system pressure as required by many water purveyors, aiding diagnosis of pressure-related issues. Ensure gauge assemblies use brass valves and corrosion-resistant components, compatible with 200 psi working pressure, to endure field conditions. Verify compatibility with your kit’s fittings and hoses before purchase.
Certification And Warranty
Certification and warranty are essential checks when selecting a backflow test kit. You should verify certification details, such as USC FCCCHR approval or USC/ASSE standards adherence, to ensure the device meets recognized testing requirements. Check the warranty term, noting common durations from 5 years to 1 year for calibration certificates, to gauge long-term reliability. Confirm that the kit includes a current calibration certificate valid for the specified period, typically 1 year, so measurements stay accurate. Determine if the kit is certified or rated for use with specific backflow assemblies (RPZ, DCV, PVB, SPVB, etc.) to ensure compatibility. Note whether the product states that aftermarket gauges or components are not endorsed by the original manufacturer, which may affect validity or warranty considerations.
Portability And Storage
Kicking off portability considerations, you’ll want a kit that’s easy to carry and quick to deploy at the job site. Portability is boosted by compact dimensions and light weight, with kits typically 4 to 9 pounds and cases or straps for easy carrying. A hard-shell or padded carrying case protects gauges and fittings during transport to field sites. Hoses and adapters come in sizes that fit standard test cocks, reducing the need for extra accessories on the go. Some kits include swivel hooks or shoulder straps for hands-free hanging or carrying on ladders or pipes. Fully assembled, ready-to-use kits save setup time in the field, especially when calibration certificates and laminated procedures are included for quick reference.
Build Material Durability
Durability in build materials matters because it directly affects reliability in the field. Start by checking material types: brass, polycarbonate, and engineered thermoplastics resist corrosion and handle pressures of at least 200 psi, depending on model. Verify that critical components use hardened brass needle valves with replaceable seats and soft-seated designs to ensure long-term valve performance under repeated testing. Look for 90-micron removable filters in test lines to prevent scale and debris from clogging gauges. Confirm diaphragm gauges offer 0-15 psid ranges with accuracy around ±0.2 psid for reliable differential readings. Inspect cases and storage: hard-shell exterior and padded compartments protect fragile gauges and fittings during transport and field use. Choose a kit with proven durability across these elements.
Calibration And Compliance
Calibration and compliance matter because without proper calibration, gauge readings can drift and lead to incorrect test results. You should check that the kit includes a calibration certificate valid for a defined period, typically one year, to verify gauge accuracy over time. Look for a specified differential gauge range, such as 0–15 psid, with stated accuracy around ±0.2 psid for reliable measurements. Ensure the kit supports multiple backflow types (RPZ, DC, PVB, SPVB, RPDA, DCDA) to meet USC/ASSE guidelines. Note that aftermarket gauge upgrades may exist, but some products explicitly state they’re not endorsed by the original manufacturer. Confirm the certified kit meets USC and ASSE 5000 standards for backflow testing procedures.
Final Thoughts
To choose a backflow test kit, compare valve counts, gauges, and included adapters. If you need digital readouts, consider Arbiter MK5; if you want a rugged, five-valve Mid-West option, pick MD.845-5 or BAC-FLO-5. For simple setups, TK-9A or Watts TK9A with gauge suit standard tests. Confirm line pressure compatibility, hose lengths, and warranty. Decide based on test complexity, frequency, and training; buy with spare parts and calibration tools for long-term reliability.
Meet Ry, “TechGuru,” a 36-year-old technology enthusiast with a deep passion for tech innovations. With extensive experience, he specializes in gaming hardware and software, and has expertise in gadgets, custom PCs, and audio.
Besides writing about tech and reviewing new products, he enjoys traveling, hiking, and photography. Committed to keeping up with the latest industry trends, he aims to guide readers in making informed tech decisions.