Features and Benefits:�Have steel ball checks and brass insert seats for grease heavy and medium oils�Includes a dirt excluding surface ball check�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 10000 lbs. applied pressure1634-B Model Code: AA - Price is for 1 Each (part# 1634-B) This item 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. -Includes a dirt excluding surface ball check. -Leak proof fittings have a Buna-N seal instead of a ball check - for light oils and other fluids up to 5,000 lbs applied pressure. -Up to 5,000 lbs. applied pressure. -Body Material: Metal. -Brand Name: Chaps . -Connection Type: Male/Male. -Type: Leakproof Fitting. -Wrench Size: 7/16 in. Testing and approvals: -SAE Short Threads.. -Designed to meet MIL-F-3541 and SAE J543-C. -Passed 50-hour salt spray test required by MIL-F-3541 and SAE J-543-C. -MS-15006-4.. Model Code  Model Description AALength:1 in [Max], Male Thread:1/8 in (PTF), Shape:Straight ABLength:29/32 in [Max], Male Thread:1/8 in (NPT), Shape:Straight ACLength:31/32 in [Max], Male Thread:1/8 in (NPT), Shape:Elbow - 90