1、I INTERNATIONAL TRUCK AND ENGINE CORPORATION I TITLE Drain and Shut-Off Cocks - General Specifications INoun Code - 9620) WRiTTEN/REVIE WED BY PPROVED BY Corporate Technical Standards orporate Technical Standards I Engineering Standard Parts CURRENTISSUE DATE September 2000 January 1989 SUPERSEDES I
2、SSUE OF UMBER: I“ ESP-L-61.101-GS I IChange Notice: Reformatted DIMENSIONS AND TOLERANCES: All dimensions will apply to the finished parts, plated, hardened or otherwise processed as specified by the purchaser. Tolerance on all dimensions not otherwise limited will be plus or minus .O10 inch. Fittin
3、g seats must be concentric with straight thread pitch diameters within .O 1 O inch full indicator reading. Maximum and minimum across flat dimensions will be commercial tolerances of bar or extruded material from which the parts are made. The minimum across corners dimension of hexagons will be 1 .O
4、92 times the nominal width across flats. STRAIGHT THREADS : Unified and American National Standard; Class 2A external and Class 2B internal threads will apply to plain finish (unplated) fittings. For externally threaded parts with additive finish, the maximum diameters of Class 2A may be exceeded by
5、 the amount of the allowance, i.e., the basic diameters (Class 2A maximum diameter plus the allowance) apply to an externally threaded part after plating. For internally threaded parts with additive finish, the Class 2B diameters apply after plating. For straight thread eccentricity tolerances, see
6、ESP-L-1 O. 102-GS. External threads will be chamfered to the closest 1/64 inch diameter smaller than the basic minor diameter within a tolerance of minus 1/64 inch on the diameter to produce approximately one incomplete thread and not to exceed one and one-half incomplete threads. Internal threads w
7、ill be countersunk 90“ included angle to the closest 1/64 inch diameter larger than the nominal diameter within a tolerance of plus 1/64 inch on the diameter. PIPE THREADS: The pipe threads will conform with the Dryseal American National Standard Taper Pipe Thread or the Dryseal SAE Short Taper Pipe
8、 Thread as specified in the SAE Dryseal Pipe Thread Standard, except as hereinafter noted. Due to design limitations the full thread lengths and shoulder lengths of some externally threaded fittings specified in ESP-L-6 1.103-PP have been shortened to the minimum required to meet acceptable assembly
9、 conditions. The external pipe threads are designated as shown in the illustrations on the following pages and the deviations from standard practice are described below. This document is restricted and may not be sent outside International Truck and Engine Corporation or reproduced without permissio
10、n from Corporate Technical Standards. Suppliers are required to assume all patent liability. 02000 International Truck and Engine Corporation. SEPTEMBER 2000 Page i of 3 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or net
11、working permitted without license from IHS-,-,-NUMBER: ESP-L-61.101-GS Dryseal Special Short External Taper Pipe Thread is shortened one thread at the small end and also one thread at the large end and is gaged the same as the Dryseal SAE Short Taper Pipe Thread, using thin ring gage only. CURRENT I
12、SSUE DATE: TITLE: Drain and Shut-Off Cocks - General Snecificatinns September 2000 Dryseal Special Extra Short External Taper Pipe Thread is shortened one thread at the small end and also two threads at the large end and is gaged 1-3/4 to 3-1/4 turns engagement for the 1/8 size, using special thin r
13、ing gage with one-half pitch (thread) ground off large end and rechamfered. The above deviations are peculiar to these types of fittings, and as special considerations are involved, caution should be exercised in specifying the deviations for any other products. External pipe threads will be chamfer
14、ed to the closest 1/64 inch diameter smaller than the minor diameter within a tolerance of minus 1/64 inch on the diameter to produce approximately one incomplete thread and not to exceed one and one-half incomplete threads. Internal pipe threads will be countersunk 90“ included angle to the closest
15、 1/64 inch diameter larger than the major diameter within a tolerance of plus 1/64 inch on the diameter. Specifications for Dryseal pipe threads and related specifications covering blank sizes, blind hole depths, pipe taps, chasers, tap drills, gages, thread length definitions, etc., are given in de
16、tail in the SAE Dryseal Pipe Thread Standards. Sealant Coating: All fittings that have external pipe threads will be furnished with a pre-applied sealant coating on the pipe threads that meets the requirements of CEMS D-3 1. This document is restricted and may not be sent outside International Truck
17、 and Engine Corporation or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 02000 International Truck and Engine Corporation. SEPTEMBER 2000 Page 2 of 3 Copyright International Truck and Engine Corporation Provided by IHS under
18、license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: ESP-L-61.101-GS MATERIAL: Body and stem: brass standard with manufacturer. Handle: steel or brass standard with manufacturer. CURRENT ISSUE DATE: TITLE: Drain and Shut-Off Cocks - General Sn
19、ecificatinns September 2000 DEFECTS: Fittings will be free from burrs, loose scale, sharp edges, eccentricity of diameters and all other defects which affect their serviceability. This document is restricted and may not be sent outside International Truck and Engine Corporation or reproduced without
20、 permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 02000 International Truck and Engine Corporation. SEPTEMBER 2000 Page 3 of 3 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
