Vacuum Relief Valves
Used to balance internal and external pressure preventing the implosion of railroad tank cars in general purpose service.
AAR Approved Design
• Cap and stem function independently.
• Non-cycling feature prevents releases in case of rollover derailment.
• Available in 1 1/2" and 2 1/2" sizes.
• Full-faced gasket prevents failure from positive pressure.
• Threaded and flanged styles available.
• Filter screens and tamper evident caps available.