Butterfly valve accumulator inspection cycle

How to test pneumatic butterfly valves?

INSPECTION AND TEST PLAN FOR THE PNEUMATIC BUTTERFLY VALVES 1. Valves test: 1) The material will be tested according to the standard by the inspection of the chemical composition (%) and mechanical property for the materials. 1) After the valves assembly work finished, the body shell and seat tests shall be performed as per API STANDARD 598.

What are the maintenance procedures for butterfly valve gear type?

Here are some routine maintenance procedures for butterfly valve gear type: Regularly inspect the valve and surrounding components for signs of wear, corrosion, or damage. Ensure that the gear mechanism is clean and free from debris or obstructions. Apply suitable lubricants to the gear mechanism to reduce friction and prevent wear.

Do butterfly valves need a closure test?

For other resilient-seated butterfly valves (API Standard 609, Category B valves), the closure test is required in both directions. For butterfly valves with a preferred flow direction, the closure test in the nonpreferred direction shall be based on the reduced differential pressure rating in that direction.

How do you maintain a butterfly valve?

Gear-actuated butterfly valves are a popular choice due to their durability and reliability. To ensure their optimal performance and longevity, regular maintenance is crucial. Here are some routine maintenance procedures for butterfly valve gear type: Regularly inspect the valve and surrounding components for signs of wear, corrosion, or damage.

Do API BV/BV-D butterfly valves need regular maintenance?

API BV/BV-D butterfly valves require only minimal regular maintenance. The following represents a preventive checklist: Check (and adjust if necessary) that the valve is operating properly in the full closed and full open position. Visually inspect the valve and around the valve for any signs of leakage.

How do you test a butterfly valve?

For a check valve, the pressure shall be applied on the downstream side. A closure test is required only in one direction for butterfly valves furnished with encapsulation or resilient internal liners and designed for use with Class 125 or Class 150 flanges (API Standard 609, Category A valves).