Modèle 337

Model 337 has ’pull-ring’ lift device for easy manual testing.

Features

• Large nozzle design provides high capacity.
• Flat bronze valve seats are lapped for optimum performance.
• Warn ring offers easy adjustability for precise opening with minimum pre-open or simmer and exact blowdown control.
• Pivot between disc and spring corrects misalignment and compensates for spring side thrust.