Relief valve 500

for fueladjustmentfor aircraft

Bubble Tight Optional Factory Preset Accurate Set Pressure Wide Range of Cracking Pressures Maintenance-free Service 100% Seat Leakage Tested Closed Résilient seal design prevents leakage. Sealing efficiency increases with increased pressure up to cracking pressure. Métal to métal seat on low pressure side supports spring load and prevents sticking. Open When system pressure overcomes spring force, poppet opens momentarily exposing variable orifice between poppet and body to pass increasing flow with minimum pressure rise without blowdown. Resealing Résilient seal automatically eslablishes line of contact with spherical seat. Seal provides dead tight reseal very close to cracking pressure.