990 – Wafer thin disc resilient seated butterfly valve • 920 – Lugged thin disc resilient seated butterfly valve
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Valve Size 4" Butterfly Valve, 4" Keystone AR-1 Wafer Style Undercut Butterfly Valve On Jamieson Equipment Co., Inc.
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High Quality Keystone Butterfly Valve F990 TYCO Actuator Flow Control Pneumatic Actuator Double Acting Professional Manufacturer - AliExpress
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