How Can the Idle Valve Prevent Rust?

Today, butterfly valve manufacturers will tell you how to prevent rusting of idle valves. Let’s talk to Wellhead Equipment Manufacturers.

1. Regular maintenance:

Valves that have been idle for a long time should be inspected and maintained regularly to prevent corrosion and damage to the valve. For valves that have been idle for too long, they should be tested together with equipment, devices, and pipelines before they can be used.

2. Clean the valve:

The inner cavity of the valve should be purged and cleaned, and there should be no residue or water solution. The outside of the valve should be wiped clean and free of dirt, oil and dust.

3. Protection and protection:

Prevent the impact of other objects, manual handling and disassembly, if necessary, the movable parts of the valve should be fixed, and the valve should be packaged and protected.

4. omplete valve parts:

After the valve is missing parts, it cannot be disassembled to make up. The valve parts should be equipped to create good conditions for the next use and ensure that the valve is in good condition.

5. Anti-corrosion treatment:

Take out the packing in the stuffing box to prevent electrochemical corrosion of the valve stem. Valve sealing surface, valve stem, valve stem nut, machined surface and other parts, depending on the actual situation, should be painted with anti-rust agent and grease. 

Hydraulic Gate Valve

Let's take a look at what protective measures should be taken when installing a butterfly valve.

1. Protective measures

Some valves also need external protection, namely heat preservation and cold storage. Sometimes hot steam pipes are added to the insulation layer. Which valve should be kept warm or cold depends on the production requirements.

In principle, if the medium in the valve cools too much, it will affect production efficiency or freeze the valve, requiring insulation or even mixing with heat; if the valve is exposed to the outside, it is not conducive to production or frosting, etc., it needs to be kept at low temperature. Thermal insulation materials include asbestos, slag wool, glass wool, perlite, diatomite; thermal insulation materials include cork, perlite, foam, plastics, etc.

2. Bypass and meter

In addition to the necessary protection facilities, some valves also have bypasses and meters. The bypass is installed. Facilitate the maintenance of the trap. For other valves, bypasses are also installed. Whether to install a bypass depends on the valve condition, importance and production requirements.

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