
Weil McLain 383-600-091 Valve
The Weil McLain 383-600-091 is a high-performance ASME Pressure Relief Valve specifically engineered for hydronic heating systems. Designed to protect the primary heat exchanger from over-pressurization, this valve is factory-calibrated to relieve at 30 PSIG. It features a robust 3/4" NPT female inlet and is the standard safety component for Weil McLain EG series boilers and other compatible hydronic units. When system pressure exceeds safe operating limits, the 383-600-091 opens to discharge excess water, preventing casting failure or piping damage.
For service technicians and contractors, the Weil McLain 383-600-091 valve serves as the direct OEM replacement for legacy part numbers 511-546-924 and 511-546-924WT. Ensuring a precise fit for boiler sizes 85-125, this 3/4 inch water relief valve maintains the safety integrity required by commercial and residential codes. Its durable brass construction and ASME certification ensure reliable seating and a long service life under high-temperature conditions common in cast iron boiler applications.
Key Benefits:
- Precision Pressure Control: Pre-set to 30 PSI to meet strict ASME safety standards for water boilers.
- Direct Fit Compatibility: Seamlessly replaces Weil McLain part 511-546-924 and 511-546-924WT without the need for piping modifications.
- Industrial Grade Build: Features a 3/4" NPT female threaded connection for a secure, leak-free installation on the supply manifold.
- System Protection: Essential for preventing cracked boiler sections by safely venting excess thermal expansion.
Common Questions:
Is the 383-600-091 compatible with all Weil McLain EG boilers?
Yes, this valve is specifically specified for the Weil McLain EG series and should be used on any water boiler where a 30 PSIG ASME relief valve with a 3/4" NPT female inlet is required.
Can this be used for steam boiler applications?
No. Steam systems typically require a 15 PSI relief valve. This 30 PSI valve is strictly for hot water (hydronic) heating systems.
Why is my current relief valve dripping?
A dripping valve often indicates mineral buildup on the seat or an expansion tank that has lost its air charge. While cleaning can sometimes help, technicians generally recommend replacement with a new 383-600-091 to ensure system reliability.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $54.82
-65%$54.82
$19.19Weil McLain 383-600-091 Valve
The Weil McLain 383-600-091 is a high-performance ASME Pressure Relief Valve specifically engineered for hydronic heating systems. Designed to protect the primary heat exchanger from over-pressurization, this valve is factory-calibrated to relieve at 30 PSIG. It features a robust 3/4" NPT female inlet and is the standard safety component for Weil McLain EG series boilers and other compatible hydronic units. When system pressure exceeds safe operating limits, the 383-600-091 opens to discharge excess water, preventing casting failure or piping damage.
For service technicians and contractors, the Weil McLain 383-600-091 valve serves as the direct OEM replacement for legacy part numbers 511-546-924 and 511-546-924WT. Ensuring a precise fit for boiler sizes 85-125, this 3/4 inch water relief valve maintains the safety integrity required by commercial and residential codes. Its durable brass construction and ASME certification ensure reliable seating and a long service life under high-temperature conditions common in cast iron boiler applications.
Key Benefits:
- Precision Pressure Control: Pre-set to 30 PSI to meet strict ASME safety standards for water boilers.
- Direct Fit Compatibility: Seamlessly replaces Weil McLain part 511-546-924 and 511-546-924WT without the need for piping modifications.
- Industrial Grade Build: Features a 3/4" NPT female threaded connection for a secure, leak-free installation on the supply manifold.
- System Protection: Essential for preventing cracked boiler sections by safely venting excess thermal expansion.
Common Questions:
Is the 383-600-091 compatible with all Weil McLain EG boilers?
Yes, this valve is specifically specified for the Weil McLain EG series and should be used on any water boiler where a 30 PSIG ASME relief valve with a 3/4" NPT female inlet is required.
Can this be used for steam boiler applications?
No. Steam systems typically require a 15 PSI relief valve. This 30 PSI valve is strictly for hot water (hydronic) heating systems.
Why is my current relief valve dripping?
A dripping valve often indicates mineral buildup on the seat or an expansion tank that has lost its air charge. While cleaning can sometimes help, technicians generally recommend replacement with a new 383-600-091 to ensure system reliability.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Product Information
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Description
The Weil McLain 383-600-091 is a high-performance ASME Pressure Relief Valve specifically engineered for hydronic heating systems. Designed to protect the primary heat exchanger from over-pressurization, this valve is factory-calibrated to relieve at 30 PSIG. It features a robust 3/4" NPT female inlet and is the standard safety component for Weil McLain EG series boilers and other compatible hydronic units. When system pressure exceeds safe operating limits, the 383-600-091 opens to discharge excess water, preventing casting failure or piping damage.
For service technicians and contractors, the Weil McLain 383-600-091 valve serves as the direct OEM replacement for legacy part numbers 511-546-924 and 511-546-924WT. Ensuring a precise fit for boiler sizes 85-125, this 3/4 inch water relief valve maintains the safety integrity required by commercial and residential codes. Its durable brass construction and ASME certification ensure reliable seating and a long service life under high-temperature conditions common in cast iron boiler applications.
Key Benefits:
- Precision Pressure Control: Pre-set to 30 PSI to meet strict ASME safety standards for water boilers.
- Direct Fit Compatibility: Seamlessly replaces Weil McLain part 511-546-924 and 511-546-924WT without the need for piping modifications.
- Industrial Grade Build: Features a 3/4" NPT female threaded connection for a secure, leak-free installation on the supply manifold.
- System Protection: Essential for preventing cracked boiler sections by safely venting excess thermal expansion.
Common Questions:
Is the 383-600-091 compatible with all Weil McLain EG boilers?
Yes, this valve is specifically specified for the Weil McLain EG series and should be used on any water boiler where a 30 PSIG ASME relief valve with a 3/4" NPT female inlet is required.
Can this be used for steam boiler applications?
No. Steam systems typically require a 15 PSI relief valve. This 30 PSI valve is strictly for hot water (hydronic) heating systems.
Why is my current relief valve dripping?
A dripping valve often indicates mineral buildup on the seat or an expansion tank that has lost its air charge. While cleaning can sometimes help, technicians generally recommend replacement with a new 383-600-091 to ensure system reliability.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.











