ID
1106202
$ 126.36
1-2 weeks delivery time
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The Isotherm SFD00004AA is a Regular-series 4.0 kp/cm² (≈4 bar) safety valve (TP09021) for marine water heaters. It provides reliable over-pressure protection, automatically releasing excess pressure to prevent tank damage and ensure safe operation of Isotemp hot-water systems.
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Isotherm SFD00004AA – Safety Valve 4.0 kp/cm² (Regular), TP09021
The Isotherm SFD00004AA is a high-reliability safety valve designed for use with Isotemp Regular marine water heaters. Rated at 4.0 kp/cm² (approximately 4 bar), this OEM pressure relief valve (reference TP09021) protects the hot-water tank and plumbing system by automatically venting excess pressure generated during heating cycles. It ensures safe and stable operation, preventing tank deformation, hose damage or system failure caused by over-pressure conditions.
Engineered from corrosion-resistant marine-grade materials, the valve is built to withstand continuous exposure to hot water, high internal pressure, vibration and the humid conditions typical of onboard technical compartments. It installs directly in place of the original safety valve and restores factory-specified protection levels in both new and aging water-heater systems.
Technical Specifications
Parameter Value Model SFD00004AA Reference TP09021 Type Pressure relief / safety valve Pressure Rating 4.0 kp/cm² (≈4 bar) Compatibility Isotemp Regular water heaters Function Over-pressure protection / automatic pressure venting Material Marine-grade corrosion-resistant construction Environment Hot-water marine plumbing
Features
- OEM safety valve for Isotemp Regular heaters (TP09021).
- Rated at 4.0 kp/cm² (≈4 bar) for precise over-pressure protection.
- Automatically vents excess pressure to prevent tank damage.
- Marine-grade build for durability in hot-water environments.
- Direct replacement for failed or worn safety valves.
Applications
- Isotemp Regular marine water heaters.
- Hot-water system pressure protection.
- Replacement of leaking, stuck or outdated relief valves.
- Marine plumbing safety compliance and system refurbishment.
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