- Confirm that the heater or equipment requires a 50 PSI factory-set relief valve.
- Verify that the required inlet is 3/4-inch male NPT and the outlet is 3/4-inch female NPT.
- Confirm that the valve 697,000 BTU/hr rated capacity equals or exceeds the equipment input rating.
- Verify compatibility with the exact Raypak, Pentair or other heater model before installation.
- Follow the heater or equipment manufacturer installation instructions.
- Shut down the equipment, disconnect energy sources and allow the system to cool completely.
- Isolate the system and relieve all water and internal pressure before removing the existing valve.
- Install the valve directly into the designated safety-relief opening without an intervening shutoff valve.
- Mount the valve in the orientation required by Apollo and the equipment manufacturer.
- Use a thread sealant approved for the system temperature, pressure and bronze threaded connection.
- Keep sealant or tape out of the valve inlet and internal flow passage.
- Tighten using the proper wrenching surfaces without twisting or stressing the valve body.
- Connect full-size discharge piping to the 3/4-inch female NPT outlet.
- Route the discharge to a safe and visible location according to applicable codes.
- Do not reduce, cap, plug, obstruct or install a shutoff valve in the discharge line.
- Support the discharge piping independently so its weight does not stress the valve.
- Restore the system gradually and inspect all connections for leakage.
- Test the valve only according to Apollo, heater-manufacturer and code requirements.
Product Highlights
- Factory set to relieve at 50 PSI
- ASME Section IV capacity certified
- Rated for 697,000 BTU per hour
- Corrosion-resistant bronze body
- Durable silicone sealing component
- 3/4-inch male NPT inlet
- 3/4-inch female NPT discharge outlet
- Suitable for compatible pool-heating equipment
- Maximum medium temperature of 250 Degrees Fahrenheit
- Made in the USA
Pressure Relief Valve 50# 3/4" x 3/4" | 1041710
Pressure Relief Valve 50 PSI 3/4" MNPT x 3/4" FNPT RVW40 697,000 BTU Bronze
In stock
Only 3 left
SKU
35-260-05364
$57.95
The following product(s) can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
The Apollo RVW40 Bronze Hot Water Safety Relief Valve provides automatic overpressure protection for compatible pool heaters, hot-water boilers, hydronic heating systems and similar equipment. The valve is factory set to open at 50 PSI, helping relieve excessive water pressure or steam generated when temperature, expansion or equipment controls fail.
Its corrosion-resistant bronze body is manufactured from ASTM B584 C84400 material for durability in compatible hot-water heating applications. A silicone sealing element provides reliable high-temperature performance, while corrosion-resistant internal spring components support consistent operation.
The valve features a 3/4-inch male NPT inlet that threads directly into a compatible heater, boiler, manifold or system connection. A 3/4-inch female NPT outlet accepts properly sized discharge piping that safely directs released water and steam away from people and equipment.
Apollo rates this valve for a maximum medium temperature of 250 Degrees Fahrenheit and a certified relieving capacity of 697,000 BTU per hour. The capacity-certified design complies with ASME Section IV requirements for hot-water heating equipment.
A manual test lever allows periodic operational testing according to the heater or equipment manufacturer instructions and applicable codes. When system pressure reaches the factory-set threshold, the spring-loaded valve opens automatically and remains a critical last line of protection against dangerous overpressure.
This valve may be suitable for compatible Raypak, Pentair and other pool-heating equipment when its 50 PSI set pressure, 3/4-inch connections, relief capacity and temperature rating match the original equipment requirements. Compatibility must be verified by heater model and manufacturer specifications before installation.
Safety relief valves must never be capped, plugged, isolated from the protected equipment or modified.
| SKU | 35-260-05364 |
|---|---|
| Manufacturer SKU | 1041710 |
| GTIN/UPC | 00670750459795 |
| Manufacturer | APOLLO VALVES |
| Brand | APOLLO VALVES |
| Material | Bronze |
| Product Group | Heater Pressure Relief Valve |
| In Stock | In Stock |
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| Compatible Model | Compatible Brand | Notes |
|---|---|---|
| Raypak, Pentair and Other Pool Heaters or Hot-Water Equipment Requiring a 50 PSI Relief Setting with 3/4-Inch MNPT Inlet and 3/4-Inch FNPT Outlet | Universal | Replacement suitability must be confirmed using the heater or equipment manufacturer required set pressure, connection sizes, relief capacity, temperature rating and code requirements. Do not substitute a valve with a different pressure setting or lower rated capacity. |
- One Apollo RVW40 bronze hot-water safety relief valve factory set to 50 PSI, with a 3/4-inch male NPT inlet, 3/4-inch female NPT discharge outlet and manual test lever. Discharge piping, fittings and installation materials are sold separately.
Installation Notes
Usage / Safety Information
Usage Instructions
- Verify that the valve is correctly installed and that the discharge line terminates safely.
- Confirm that no shutoff valve, plug, cap or restriction separates the relief valve from the protected heater or equipment.
- Inspect the valve and discharge piping periodically for corrosion, leakage, mineral buildup or physical damage.
- Keep the discharge opening and termination clear of obstructions.
- Follow the Raypak, Pentair or other heater manufacturer schedule for safety-valve inspection and testing.
- Before operating the manual test lever, confirm that the discharge area is clear of people and property.
- Wear suitable protective equipment because discharged water may be extremely hot.
- Lift the test lever only as instructed by the manufacturer.
- Allow water to flow briefly through the valve and discharge piping.
- Release the lever and confirm that the valve closes completely.
- Inspect the valve afterward for continued dripping or leakage.
- If the valve does not open, does not reseat or continues leaking, shut down the equipment.
- Do not strike, adjust, repair or modify the factory-calibrated pressure mechanism.
- Replace a malfunctioning or damaged relief valve with an approved valve of equivalent specifications.
- Investigate repeated valve discharge rather than simply replacing or plugging the valve.
- Confirm that system pressure, expansion control and temperature controls are operating correctly.
- Inspect related heater safety components when repeated overpressure or overheating occurs.
- Keep records of inspection, testing and replacement when required by code or facility policy.
- Never operate heating equipment without a correctly sized and functional safety relief valve.
Safety Information
- WARNING: This valve protects equipment and occupants from dangerous overpressure. Incorrect selection, installation, alteration or obstruction can result in severe burns, equipment rupture, property damage, serious injury or death.
- Hot water or steam discharged from the valve can cause severe burns. Route the discharge pipe to a safe location and keep people away from the outlet.
- Shut down the heater, disconnect electrical power and fuel supplies and allow the system to cool before servicing the valve.
- Relieve all pressure before removing or loosening the valve.
- Never install a shutoff valve between the protected equipment and the safety relief valve.
- Never cap, plug, reduce or obstruct the valve outlet or discharge piping.
- Do not alter the spring, lever, set pressure or any factory-calibrated component.
- Do not use this 50 PSI valve when the heater or equipment requires a different pressure setting.
- The valve relief capacity must equal or exceed the maximum equipment input specified by the manufacturer and applicable code.
- A leaking or frequently discharging relief valve may indicate excessive system pressure, failed controls, restricted water flow, overheating, thermal expansion or another unsafe condition that requires diagnosis.
- Installation and replacement should be completed by a qualified technician familiar with pool heaters, boilers, hydronic systems and applicable safety codes.
Important Notes
- Apollo article 1041710 is a hot-water safety relief valve, not a general-purpose flow-control valve.
- The valve is factory set to open at 50 PSI.
- The inlet connection is 3/4-inch male NPT.
- The outlet connection is 3/4-inch female NPT.
- The certified relieving capacity is 697,000 BTU per hour.
- The maximum listed medium temperature is 250 Degrees Fahrenheit.
- The maximum listed operating pressure for the series is 80 PSI.
- The bronze body uses ASTM B584 C84400 material.
- The valve uses a silicone sealing component.
- It is ASME Section IV capacity certified.
- It may be suitable for compatible Raypak, Pentair and other pool heaters when all specifications match.
- Compatibility must be verified using the exact heater model and manufacturer documentation.
- It is not automatically compatible with every Raypak or Pentair heater.
- The relief valve must be connected directly to the protected equipment without an intervening shutoff valve.
- Discharge piping must remain full size and unobstructed.
- Do not select a replacement based only on thread size.
- Set pressure, BTU capacity, temperature rating and application approval must all match system requirements.
- A pressure-relief valve is a safety device and should not be used to regulate normal system pressure.
- Repeated discharge indicates a heater or system condition that must be investigated.
- Made in the USA according to Apollo product documentation.
What is Apollo part number 1041710 used for?
It protects compatible pool heaters, hot-water boilers, hydronic heating systems and similar equipment from excessive pressure and steam generation.
What pressure is the valve set to?
Apollo 1041710 is factory set to open at 50 PSI.
What size is the inlet connection?
The inlet is a 3/4-inch male NPT connection.
What size is the outlet connection?
The discharge outlet is a 3/4-inch female NPT connection.
What is the relief capacity?
The valve has a rated relieving capacity of 697,000 BTU per hour.
What is the maximum temperature rating?
Apollo lists a maximum medium temperature of 250 Degrees Fahrenheit.
What is the valve body made from?
The body is made from corrosion-resistant ASTM B584 C84400 bronze.
What type of seal does the valve use?
Apollo identifies the sealing material as silicone.
Is this valve ASME certified?
Yes. It is capacity certified to ASME Section IV requirements for hot-water heating equipment.
Can this valve be used on a Raypak pool heater?
It may be suitable when the exact Raypak heater model requires a 50 PSI valve with 3/4-inch connections and a relief capacity no greater than this valve certified rating. Verify the heater manual before installation.
Can this valve be used on a Pentair pool heater?
It may be suitable when the exact Pentair heater model requires the same pressure setting, thread sizes, temperature rating and relief capacity. Compatibility must be confirmed by model.
Can a shutoff valve be installed before the relief valve?
No. A shutoff valve must not isolate the safety relief valve from the equipment it protects.
Can the discharge outlet be capped?
No. The outlet and discharge piping must remain open and unobstructed.
Can the discharge pipe be reduced to a smaller size?
No. Discharge piping should remain at least the full valve-outlet size and comply with applicable codes.
Why is the valve dripping?
Dripping may result from debris, a damaged seat, thermal expansion, excessive pressure, overheating, restricted flow or a failed heater control. The cause should be diagnosed by a qualified technician.
Can the 50 PSI setting be adjusted?
No. Do not alter or adjust the factory-calibrated pressure setting.
Does the valve have a manual test lever?
Yes. The lever permits periodic testing when performed according to manufacturer and equipment instructions.
How do I know whether this valve is the correct replacement?
Match the required pressure setting, inlet and outlet sizes, BTU capacity, temperature rating, application and code certification to the exact heater or equipment specifications.
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