
Resideo 0901443 Sealing Ring
The Resideo 0901443 is a critical replacement sealing ring specifically engineered for the NK300S series pressure regulating and backflow prevention assemblies. As a dedicated boiler feed valve part, this component ensures a high-integrity, leak-resistant seal within the valve body, maintaining precise system pressure regulation in both hydronic heating and domestic plumbing installations. In the field, service technicians rely on the 0901443 to restore the mechanical seal of the NK300S-100 and related combinations where calcification, thermal cycling, or water hammer have compromised the original elastomer performance. Proper installation of this sealing ring is essential for preventing atmospheric discharge and ensuring the assembly meets code requirements for cross-connection control. By maintaining the NK300S valve assembly with genuine Resideo components, contractors prevent localized pressure drops and mitigate the risk of water damage within the mechanical room.
Key Benefits:
- Precision-molded sealing ring for NK300S valve assemblies ensures an airtight and watertight fit.
- Critical for backflow preventer maintenance to ensure compliance with local plumbing codes.
- High-grade elastomeric material handles the temperature fluctuations common in hydronic system components.
- Facilitates rapid field repairs, reducing labor time when servicing pressure regulating valves.
- Direct OEM replacement provides exact dimensional compatibility for Resideo HVAC parts.
Common Questions:
- How do I know if the Resideo 0901443 needs replacement? Replace this ring if you observe external weeping from the NK300S body or if the valve fails to maintain the downstream set pressure during static conditions.
- Is this sealing ring compatible with other backflow preventers? No, the 0901443 is specifically designed for the internal geometry of the NK300S series. Always verify the model number on the valve tag before installation.
- What tools are required for installation? Standard adjustable wrenches or hex keys are typically used to disassemble the NK300S housing; ensure the system is depressurized before removing the sealing interface.
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: $2.38
-65%$2.38
$0.83Resideo 0901443 Sealing Ring
The Resideo 0901443 is a critical replacement sealing ring specifically engineered for the NK300S series pressure regulating and backflow prevention assemblies. As a dedicated boiler feed valve part, this component ensures a high-integrity, leak-resistant seal within the valve body, maintaining precise system pressure regulation in both hydronic heating and domestic plumbing installations. In the field, service technicians rely on the 0901443 to restore the mechanical seal of the NK300S-100 and related combinations where calcification, thermal cycling, or water hammer have compromised the original elastomer performance. Proper installation of this sealing ring is essential for preventing atmospheric discharge and ensuring the assembly meets code requirements for cross-connection control. By maintaining the NK300S valve assembly with genuine Resideo components, contractors prevent localized pressure drops and mitigate the risk of water damage within the mechanical room.
Key Benefits:
- Precision-molded sealing ring for NK300S valve assemblies ensures an airtight and watertight fit.
- Critical for backflow preventer maintenance to ensure compliance with local plumbing codes.
- High-grade elastomeric material handles the temperature fluctuations common in hydronic system components.
- Facilitates rapid field repairs, reducing labor time when servicing pressure regulating valves.
- Direct OEM replacement provides exact dimensional compatibility for Resideo HVAC parts.
Common Questions:
- How do I know if the Resideo 0901443 needs replacement? Replace this ring if you observe external weeping from the NK300S body or if the valve fails to maintain the downstream set pressure during static conditions.
- Is this sealing ring compatible with other backflow preventers? No, the 0901443 is specifically designed for the internal geometry of the NK300S series. Always verify the model number on the valve tag before installation.
- What tools are required for installation? Standard adjustable wrenches or hex keys are typically used to disassemble the NK300S housing; ensure the system is depressurized before removing the sealing interface.
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.
Product Information
Product Information
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Description
The Resideo 0901443 is a critical replacement sealing ring specifically engineered for the NK300S series pressure regulating and backflow prevention assemblies. As a dedicated boiler feed valve part, this component ensures a high-integrity, leak-resistant seal within the valve body, maintaining precise system pressure regulation in both hydronic heating and domestic plumbing installations. In the field, service technicians rely on the 0901443 to restore the mechanical seal of the NK300S-100 and related combinations where calcification, thermal cycling, or water hammer have compromised the original elastomer performance. Proper installation of this sealing ring is essential for preventing atmospheric discharge and ensuring the assembly meets code requirements for cross-connection control. By maintaining the NK300S valve assembly with genuine Resideo components, contractors prevent localized pressure drops and mitigate the risk of water damage within the mechanical room.
Key Benefits:
- Precision-molded sealing ring for NK300S valve assemblies ensures an airtight and watertight fit.
- Critical for backflow preventer maintenance to ensure compliance with local plumbing codes.
- High-grade elastomeric material handles the temperature fluctuations common in hydronic system components.
- Facilitates rapid field repairs, reducing labor time when servicing pressure regulating valves.
- Direct OEM replacement provides exact dimensional compatibility for Resideo HVAC parts.
Common Questions:
- How do I know if the Resideo 0901443 needs replacement? Replace this ring if you observe external weeping from the NK300S body or if the valve fails to maintain the downstream set pressure during static conditions.
- Is this sealing ring compatible with other backflow preventers? No, the 0901443 is specifically designed for the internal geometry of the NK300S series. Always verify the model number on the valve tag before installation.
- What tools are required for installation? Standard adjustable wrenches or hex keys are typically used to disassemble the NK300S housing; ensure the system is depressurized before removing the sealing interface.
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.












