Features and Benefits:�Leak proof fittings have a Buna-N seal instead of a ball check - for light oils and other fluids up�Redundancy of seal should be provided in critical applications where back pressure must be maintaine�To improve reliability of the check valve in these fittings keep input passages free of foreign part�Up to 5000 lbs. applied pressure1650 Features: -Have steel ball checks and brass insert seats for grease, heavy and medium oils. -To improve reliability of the check valve in these fittings, keep input passages free of foreign particles. -Redundancy of seal should be provided in critical applications where back pressure must be maintained. -Up to 10,000 lbs. applied pressure. Generic Dimensions: -Depth: 39.37'', 0.02 lb. Dimensions: Overall Depth - Front to Back: -39.37 Inches. Overall Product Weight: -0.02 Pounds.