The opening point of a PVB is typically set by the manufacturer and is determined based on the spring tension of the air inlet valve and the design specifications of the check valve. It is crucial that the PVB opens at the right moment—when the system pressure falls just below atmospheric pressure—to ensure it fulfills its protective role without unnecessarily interrupting the water flow during normal operation. Advanced testing equipment, including digital backflow test kits like the Model 855 equipped with the MachBackflow app, enables precise measurement and verification of the PVB’s opening point, ensuring compliance with regulatory standards and optimal performance.

Product Features & Benefits Temperature and Pressure Relief (T&P) Valve for Commercial Water Heaters. The Temperature and Pressure Relief Valve is a safety device that allows water to escape from...

Most orders are available for pickup at any of our warehouses in Detroit, Michigan. If you would like to pick up your order please select that option at checkout. Local pickups may be subject to a pickup fee. If your order is not being shipped from the manufacturer it is typically available the same day you place the order.

Warning: Cancer and Reproductive Harm – www.P65Warnings.ca.gov For complete information on Proposition 65, please read this informational PDF or visit www.p65warnings.ca.gov

All of our freight shipments have a shipment guarantee! This means that if your water heater arrives later then the estimated delivery window shown on the product page we will credit you $100 upon delivery.

Standards set by agencies such as the American Water Works Association (AWWA) and the Environmental Protection Agency (EPA) guide the installation, testing, and maintenance of PVBs. Regular testing is mandated to ensure that the opening point remains within acceptable limits, as drift from the specified setting can compromise the device’s effectiveness. Professional backflow prevention testers use calibrated instruments to measure the opening point during annual inspections or after any repairs or adjustments to the assembly.

In conclusion, the opening point of Pressure Vacuum Breakers is a critical parameter that ensures these devices function as intended to protect water supplies from contamination due to back siphonage. Accurate determination and maintenance of the opening point are essential for the effective operation of PVBs. With the aid of modern technology and regular testing, water safety professionals can ensure that these crucial devices continue to operate reliably, safeguarding public health and complying with regulatory standards.

Several challenges can affect the accurate determination and maintenance of the opening point in PVBs. Debris, wear, and tear, or even improper installation can cause the PVB not to open at the correct pressure, either failing to protect the water supply or causing unnecessary water system interruptions. Solutions include regular maintenance, cleaning, and calibration of the PVB, along with the replacement of parts like springs and seals as needed to ensure reliable operation.

We ship to the continental united states. Some products can be shipped to Alaska and Hawaii, but please contact us first to determine additional shipping cost and estimated delivery time.

Pressure Vacuum Breakers (PVBs) are critical components in preventing backflow and protecting water supplies from contamination due to back siphonage. Understanding the opening point of a Pressure Vacuum Breaker is essential for ensuring it functions correctly to protect potable water systems. The opening point of a PVB is a key performance metric that determines the effectiveness and reliability of the backflow preventer under varying conditions.

Certain products are not available in Texas and California. If a product is excluded from certain states it will be noted in the product description. These products are not allowed in these states, so there are no exceptions to these exclusions.

Product Features & Benefits Temperature and Pressure Relief (T&P) Valve for Commercial Water Heaters. The Temperature and Pressure Relief Valve is a safety device that allows water to escape from the tank in the unlikely event the temperature or pressure inside the tank become excessive. This is an OEM genuine factory authorized part, ensuring high quality to keep your equipment running smoothly and safely. 150 PSI Pressure - 210 Degree Temperature 30-54 KW (200K BTU) Contact customer service at 248-892-1000 with model and serial number to verify the part for your particular water heater. 1-year limited warranty OEM genuine factory authorized part Technical Data Maximum Temperature Setting (Deg. F): 210 Maximum Pressure Setting (psi): 150 CSA Capacity (BTU/HR): 200,000 Inlet Thread Size - NPT (in.): 3/4  Outlet Thread Size - NPT (in.): 3/4 Overall Length (in.): 9-1/8 Body Length (in.): 5-5/8 Sensor Length (in.): 3-1/2 Replaces  AP9013D-5 Shipping Information Shipping weights and dimensions are for reference only for the purpose of calculating freight charges. For parcel shipping, dimensional weights are used by FedEx to determine the rate rather than the actual weight. Shipping Weight Actual (lbs.): 1.60 Shipping Weight Dimensional (lbs.): 1.60 Shipping Height (in.): 2.45 Shipping Length (in.): 11.50 Shipping Width (in.): 3.10 Country Of Origin: US

For over 60 years, Mid-West Instrument has been a leading provider of premium differential pressure gauges. Need help finding the right pressure gauge and equipment for your business? Reach out to us today to speak with one of our experienced professionals.

Smaller parts and accessories will arrive to your porch or mailbox. Please note that tankless water heaters may require a signature upon delivery. For large items that cannot be shipped via standard UPS or FedEx services, we work with delivery companies to get your items to you. These partners deliver to your curb at the end of your driveway, and you are responsible for moving the items from there. Please note, if you live down a road or driveway that the delivery truck cannot access without causing damage to the truck we may need to make special arrangement for delivery, so please let us know. These carriers will call to schedule delivery so you can be home to inspect your items and accept delivery.We recommend opening the boxes and inspecting the products for any signs of damage, such as broken parts or chips and cracks in the finish. While we do our best to make sure items are packaged safely and securely to prevent damage, we recognize that fragile products will occasionally break in transit to your doorstep. If you see any signs of damage, firmly refuse the damaged items and keep any that are in good condition. Do not let the driver leave without inspecting. If driver refuses to stay during inspection, sign "Subject to Inspection" on the delivery receipt and call us immediately to report damages.

« Mid-West® Instrument’s Model 855 Digital Backflow Test Kit Powered by the MachBackflow AppPressure Gauge Connection Bushings in “Bellows Type” High Accuracy Gauges »

Shipping times can vary from water heater to water heater, however most in stock shipments will arrive in 2-5 business days depending on how close the warehouse is to the shipping address. On each product page we give an estimated delivery window which will show roughly when a product will arrive, if you need a better estimate please call into (313) 626-6800 and one of our customer support representatives can assist you.

A select number of our products are available for expedited shipping. If we offer expedited shipping on a product it will show the option at checkout. Cost and times will depend on your location and availability of the water heater. Most expedited shipments will arrive in 1-3 business days. All expedited shipments are shipped LTL and are only estimated delivery times. For any guaranteed expedited shipments/overnight shipments please contact our customer support team for a quote.

Digital advancements, such as the integration of apps and digital test kits, have greatly improved the efficiency and accuracy of testing PVBs. These tools allow for real-time data collection and analysis, facilitating immediate adjustments and providing a comprehensive database of test results for ongoing monitoring and compliance purposes.

Technology plays a pivotal role in enhancing the testing and maintenance of Pressure Vacuum Breakers. The development of apps like MachBackflow, which can be paired with digital test kits, allows for streamlined data management, including recording the opening point of PVBs. These technological solutions not only improve the accuracy of tests but also significantly reduce the time required for testing and documentation, thereby enhancing the overall efficiency of backflow prevention programs.

Deliveries, except for USPS, are not typically made on Saturdays or Sundays. This means any commercial water heater will not be shipped over the weekend.

Once your order ships, you will receive a Ship Confirmation email, and have an option to receive email updates on the delivery status of your order. You will also receive a tracking number from the designated carrier for your shipment. If you do not receive this tracking number please contact us, and we will provide it to you.If you're purchasing an item being dropshipped you will not receive tracking information until the product has been shipped from the manufacturer.

A Pressure Vacuum Breaker comprises a spring-loaded check valve that closes when water flows at a normal rate through the system and an air inlet valve that opens when internal pressure drops below atmospheric pressure. The opening point of a PVB refers to the specific pressure at which the air inlet valve opens to admit air into the system, preventing a vacuum from forming and thereby stopping any back siphonage. This function is critical in maintaining the safety and integrity of drinking water systems, especially in areas where sudden drops in water pressure can occur, leading to potential backflow of contaminants.

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Our standard deliveries will ship from the closest warehouse to your shipping address. We have several warehouses in Michigan and can also ship out of any Rheem warehouses in the United States. Rheem has warehouses in Colorado, California, Florida, Texas, New Jersey, Alabama, and Illinois. Depending on availability and your location we will determine the best possible warehouse to ship from to ensure a timely delivery.

Temperature and Pressure Relief (T&P) Valve for Commercial Water Heaters. The Temperature and Pressure Relief Valve is a safety device that allows water to escape from the tank in the unlikely event the temperature or pressure inside the tank become excessive. This is an OEM genuine factory authorized part, ensuring high quality to keep your equipment running smoothly and safely.