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PTFE overmold diaphragm
Use additional air hose if necessary for extended reach
Regularly inspect and maintain the diaphragm and seats for wear
Verify all connections are secure and leak-free
Viega ProPress Lockable Stem Extension Model 2971.9XL (SKU: 78312) PTFE overmold diaphragmViega ProPress Lockable Stem Extension Model 2971. 9XL, Brass, SKU: 78312 This lockable stem extension is designed for use with the Viega ProPress ball valve Model 2971. 1XL, accommodating valve sizes from 2 1 2 to 4 inches. Material: Durable brass construction ensuring long lasting performance Compatibility: Specifically designed for Viega ProPress ball valve Model 2971. 1XL Valve Size Range: Suitable for valves sized between 2 1 2 and 4 inches
