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109MDT

Class 300 Cast Carbon Steel Globe Body Silent Check Valves

  • Disc begins to open at 0.5 psi (34.5 kPa), and opens 1/3 inch per inch of line size for enhanced flow
  • Disc is fully guided at top and bottom to ensure alignment and sealing at any installation angle
  • Globe body design provides greatest flow capacity in a silent check valve
  • Mating surfaces of the disc and seat are hand lapped for best possible sealing

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific 109MDT

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