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77SI

Cast Iron, Wye-Pattern Strainers

  • Machined seat allows self-aligning screen to help ensure a perfect fit
  • Non-asbestos gasket and blow-down connection for greater confidence
  • NPT threaded connection and threaded iron retainer cap for easy installation
  • Cast steel 45° wye-pattern body for efficient flow and long life

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 77SI

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA