Varec Series 3500B/3600B/3650B Vacuum or Pressure Relief Valves

Weight loaded vacuum breakers designed to provide superior seat tightness

Features

Designed to offer flexibility of installation
3500B valves for tank top mounting
3600B valves are side mounted
3650B valves with flanged intake and discharge connections for ‘in-line’ applications
3660B valves for either pressure (top mounted) or vacuum (side mounted) relief applications
Oversized port for maximum flow
Replaceable ‘air cushion’ PTFE seating for lowest available leakage for weight-loaded valves (1 SCFH [0.03 Nm3/hr] or less at 90% of setpoint)
Pallet drip ring and self-draining housing protect the seating surface from condensate and freezing
Side-and-center guided pallet
Wide range of materials for service in most applications
‘All-weather’ non-frosting and ice-resistant coating option available for valve seats and guides
Extended service options available for high temperature and chemical applications

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