Maintenance, installation and operation instructions

Automatic Pressure Relief Valve

Abresan Tolou Bahar Roud (ATBR)

Installation, operation and maintenance instructions for automatic safety control valve (anti-water hammer type)

1. Pre-installation checks

• The internal valve path should be cleaned of any contamination, solid particles, or packaging debris.
• All control connections, pilots, and mechanical components should be inspected for visual integrity, leaks, and blockages.
• If the valve has a storage tank, its initial pressure should be adjusted according to the instructions.

2. How to install in the plumbing system

• The valve must be installed in a way that the flow direction matches the arrow marked on the body.
• The installation position (horizontal or vertical) should be selected based on the product design and manufacturer's recommendations.
• For better sealing, use appropriate gaskets between the flanges and tighten the nuts evenly and crosswise.
• Before fully connecting, ensure that the valve is level and the flanges are precisely aligned.

3. Initial setup

• First, slowly insert the valve into the circuit and ensure that there are no leaks in the connections.
• Pilot or control valve settings should be made based on the system's operating conditions.
• During initial startup, the valve's performance should be tested during a sudden flow interruption (e.g., simulating a pump shutdown).

4. Storage conditions in warehouse

• Milk should be stored indoors, away from direct sunlight and moisture.
• During long periods of storage, uncoated metal surfaces should be coated with protective materials to prevent rust.
• Avoid placing the valve under mechanical pressure or in the vicinity of corrosive materials.
• If possible, store the valve in a horizontal position on a wooden stand or pallet.

5. Periodic maintenance and service

• The recommended inspection period is every 6 months or as determined by the site's operating conditions.
• At each visit, the performance of the pilot, diaphragm, valve, and moving components should be checked.
• If the circuit is contaminated, the filter parts and control channels should be washed or replaced.
• Check for leaks and inspect and tighten all nuts and bolts as necessary.
• The paint or plating coating should be repaired if damaged.

6. Safety tips and warnings

• When repairing or disassembling the valve, the line pressure must be completely relieved.
• Adjustments or opening of the valve should only be made by trained and authorized personnel.
• The use of non-standard or unapproved spare parts can cause improper operation and damage.

7. Special recommendations for anti-ram valves

• The volume and pressure of the air accumulator must be adjusted according to the system's needs to achieve optimal performance.
• The slow closing of the valve should be adjusted to prevent negative pressure.
• If a sudden drop in pressure or change in valve performance is observed, a technical inspection should be performed immediately.

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