Conbraco 10-407-05 Pressure Relief Valve | 3/4" Male x 3/4" Female | 30 PSI
π Product Description
The Conbraco 10-407-05 Pressure Relief Valve is designed for water heating systems, providing reliable protection against excessive water pressure and thermal expansion. With a 30 PSI blow-off rating and a maximum capacity of 535,000 BTU, this valve ensures safe operation of your hot water boiler or heating system.
Constructed with a plain brass finish, the valve features a 3/4" male pipe thread inlet and a 3/4" female pipe thread outlet, allowing for easy installation and secure connection. For water use only β not suitable for steam applications.
This valve is capacity-certified and complies with ASME Section IV requirements, making it ideal for residential and commercial hot water systems. It is an exact replacement for Burnham 81660363.
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Key Features
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Inlet Size: 3/4" Male Pipe Thread
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Outlet Size: 3/4" Female Pipe Thread
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Blow-Off Pressure: 30 PSI
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Maximum Capacity: 535,000 BTU
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Material / Finish: Plain Brass
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Water Use Only: Not for steam applications
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Safety Compliance: ASME Section IV certified
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Cross Reference: Exact same as Burnham 81660363
π Specifications Table
Category | Details |
Model / Part Number |
10-407-05 |
Inlet / Outlet Size |
3/4" Male x 3/4" Female |
Blow-Off Pressure |
30 PSI |
Max Capacity |
535,000 BTU |
Material / Finish |
Plain Brass |
Fluid Type |
Water Only |
Compliance |
ASME Section IV |
Cross Reference |
Burnham 81660363 |
β οΈ Common Symptoms (When to Replace)
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Excessive pressure in the hot water system
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Leaks from the valve or connections
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Valve fails to open at set pressure
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Routine replacement for older or corroded valves
β Frequently Asked Questions (FAQ)
Q1: Can this valve be used on steam systems?
β‘οΈ No, this valve is for water only.
Q2: What is the maximum blow-off pressure?
β‘οΈ Rated at 30 PSI.
Q3: What is the maximum capacity?
β‘οΈ Handles up to 535,000 BTU.
Q4: Is this compatible with other brands?
β‘οΈ Yes, it is an exact replacement for Burnham 81660363.
π Shopping Tips
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π§ Verify your systemβs pressure and capacity before purchasing.
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π§° Recommended as part of routine maintenance to prevent excessive pressure buildup.
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β‘ Ensure proper installation to maintain compliance with safety standards.