What do you put on valve body bolts?

What do you put on valve body bolts?

• A. Grease
• B. Oil
• C. Anti seas compound
• D. WD-40

Answer: (C)

The main idea is to prevent the bolts from seizing or galling as the valve operates in a harsh, often salty, high-temperature environment. Bolts in valve bodies connect dissimilar metals and are exposed to heat and moisture, so using an anti-seize compound on the threads helps corrosion resistance and makes future removal much easier. Apply a thin coating of anti-seize compound to the bolt threads (not to the sealing surfaces). This keeps the threads from sticking, reduces the risk of galling, and helps maintain detachable joints during maintenance. Be mindful that the lubricant affects friction, so follow the torque specification for lubricated fasteners and recheck as required. Grease, oil, or WD-40 aren’t suitable here because they don’t provide long-lasting protection against heat and corrosion in marine valve assemblies and can contaminate seals or wash away, making disassembly harder later. Anti-seize is designed for this purpose, especially in environments with dissimilar metals and corrosion risk.

The main idea is to prevent the bolts from seizing or galling as the valve operates in a harsh, often salty, high-temperature environment. Bolts in valve bodies connect dissimilar metals and are exposed to heat and moisture, so using an anti-seize compound on the threads helps corrosion resistance and makes future removal much easier.

Apply a thin coating of anti-seize compound to the bolt threads (not to the sealing surfaces). This keeps the threads from sticking, reduces the risk of galling, and helps maintain detachable joints during maintenance. Be mindful that the lubricant affects friction, so follow the torque specification for lubricated fasteners and recheck as required.

Grease, oil, or WD-40 aren’t suitable here because they don’t provide long-lasting protection against heat and corrosion in marine valve assemblies and can contaminate seals or wash away, making disassembly harder later. Anti-seize is designed for this purpose, especially in environments with dissimilar metals and corrosion risk.