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The Viega 77787 ProPress Bronze Union is designed for reliable performance in various piping systems. This fitting, with a connection size of three-fourths inches, features press x MPT connection type. It is suitable for potable water, hydronic heating, chilled water, compressed air, non-medical gases, fire sprinklers, low pressure steam, and vacuum applications.
This product adheres to multiple certifications, including NSF 61G, IAPMO, UL, and FM standards, ensuring it meets industry requirements.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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