Overview Reviews Product Description YU5221 UNLOADER HIGH FLOW 53GPM 220OPSI Trapped pressure unloader valve SPECIFICATIONS: Maximum volume: 52.5 GPM Maximum discharge pressure: 2175 PSI Maximum temperature: 194F Port Sizes: 1" FPT Weight: 4.5 lb Dimensions: 8.5" x 5.0" x 1.75" Product Videos Custom Field Product Reviews Write a Review Write a Review × GP YU5221 UNLOADER HIGH FLOW 53GPM 220OPSI Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *