For a 3/4-inch pressure relief valve, the Legend Valve 111-301NL is the closest match in this list: its description identifies a 3/4-inch-to-1-inch PRV rated for a 200K BTU model. The JTLB product is a pressure-reducing regulator rather than a relief valve, while the other listed products include drain, shutoff, and unrelated valves. Check the valve type, connection size, pressure rating, and system requirements before choosing; these products are not interchangeable.
| Product | Listed type or use | Best fit |
|---|---|---|
| Legend Valve 111-301NL | Pressure relief valve | Closest listed 3/4-inch PRV match |
| JTLB pressure regulator | Pressure-reducing regulator | Adjustable water-pressure reduction |
| Woodford RKPRV4 | Pressure-reducing valve repair kit | Repair-kit shoppers verifying exact model fit |
| Cinsda backwater valve | Drain backflow prevention | 3-inch PVC drainage systems |
| Valterra gate valve | Manual shutoff | 3-inch liquid or gas shutoff applications |
Legend Valve 111-301NL Pressure Relief Valve
Best for: Buyers searching for the closest match to a 3/4-inch PRV. The product name identifies it as a pressure relief valve with a 3/4-inch-to-1-inch size range and a 200K BTU model designation. That makes it more directly relevant to the search than the shutoff or backwater valves in this list.
Why it was selected: It is the only listed product explicitly named as a PRV and includes 3/4 inch in its stated size range. Confirm the exact connection size and application with the manufacturer or supplier before ordering.
Limitation: The supplied product details do not state a pressure set point or provide further installation specifications. Do not assume those values from the model name.
JTLB Adjustable Water Pressure Regulator
Best for: Buyers who need to reduce and adjust water pressure, not release excess pressure through a relief valve. The listing describes an adjustment knob and use ahead of tap-water equipment. It also gives a maximum withstand pressure of 0.6 MPa and an adjustment range described as 0–160 psi.
Why it was selected: “PRV” can refer to a pressure-reducing valve as well as a pressure relief valve. This product is relevant to the pressure-reducing interpretation and appears in the supplied details as a 3/4-inch-style regulator.
Limitation: The listing’s size and pressure details are not fully clear. Verify the connection dimensions and operating range before purchase. A reducing regulator is not a substitute for a safety relief valve.
Woodford RKPRV4 Repair Kit
Best for: Buyers looking for a pressure-reducing valve repair kit and already able to verify that the kit matches their installed valve. The product is identified as the Woodford RKPRV4, with a listed size of 4 inches and a “Made in USA” feature.
Why it was selected: It is the only other listing explicitly tied to a pressure-reducing valve, making it more relevant to PRV research than general-purpose shutoff products.
Limitation: The listed 4-inch size does not match a 3/4-inch search. The supplied details do not identify compatible valve models or kit contents, so check fit carefully.
Cinsda 3-Inch PVC Backwater Valve
Best for: Buyers who need to prevent sewage or water from flowing backward through a 3-inch PVC drain. The product is designed for drainage systems, uses sturdy PVC, and can be solvent-welded for a watertight connection.
Why it was selected: It is a valve from the supplied list, but its function is backflow prevention in a drain—not pressure relief or water-pressure reduction.
Limitation: Its stated 3-inch drain connection does not match a 3/4-inch PRV application. Avoid this product if the goal is to control pressure in a water supply or heating system.
Valterra 3-Inch PVC Gate Valve
Best for: Buyers who need a manually operated 3-inch shutoff valve. Its features include unrestricted flow, push-pull operation, and quick shutoff. The listing says it can be used with liquids and gases.
Why it was selected: It provides a comparison point for shoppers whose need is simply to open or shut a line rather than regulate or relieve pressure.
Limitation: This is a 3-inch gate valve, not a 3/4-inch pressure relief valve. A manual shutoff does not perform the automatic pressure-control function of a PRV.
Buying Guide: How to Choose a 3/4-Inch PRV
Do you need pressure relief or pressure reduction?
A pressure relief valve opens to discharge pressure when conditions reach its operating threshold. A pressure-reducing valve lowers downstream pressure and typically maintains a selected setting. Identify the required function first: the Legend listing is described as a relief valve, while the JTLB listing is described as an adjustable pressure reducer. Neither function should be assumed interchangeable.
Which connection size and rating should you verify?
Confirm nominal size, connection type, pressure setting or adjustment range, and the system’s required capacity. The Legend listing gives a 3/4-inch-to-1-inch range and a 200K BTU designation, but the supplied details do not provide a relief set point. Have a qualified professional confirm that the valve suits the equipment and local requirements.
Is the valve intended for water supply, heating, or drainage?
Application matters as much as size. A backwater valve protects a drain from reverse flow, and a gate valve provides manual shutoff. Neither is a pressure relief valve. Check the product’s stated medium and intended installation location rather than choosing by the letters “PRV” alone.
Should you buy a repair kit?
Choose a repair kit only after confirming the installed valve’s manufacturer, model, and required kit. The Woodford listing identifies a 4-inch kit, not a 3/4-inch valve, and its supplied details do not specify compatible models. Do not treat it as a complete replacement valve.
Frequently Asked Questions
What does PRV mean?
PRV can mean pressure relief valve or pressure-reducing valve. Check the product description and required system function to determine which meaning applies.
Which listed product is the closest match for a 3/4-inch pressure relief valve?
The Legend Valve 111-301NL is the closest match because its name identifies a pressure relief valve and includes a 3/4-inch-to-1-inch size range.
Can a pressure-reducing valve replace a pressure relief valve?
No. A reducing valve lowers downstream pressure; a relief valve discharges pressure under specified conditions. Use the type required by the system design.
Is the Valterra gate valve a PRV?
No. It is a manually operated 3-inch gate valve for shutoff, not an automatic pressure relief or pressure-reducing device.
Does the Cinsda backwater valve fit a 3/4-inch line?
The listing describes a 3-inch PVC backwater valve for drainage systems. It does not identify a 3/4-inch connection.