《澳门维尼斯人赌场赢钱》和. ANPT线程

《澳门维尼斯人赌场赢钱》和. ANPT线程

The purpose of the natural gas meter set is to help provide a home or building access to this resource in a safe an efficient manner. This is done in part by threads on natural gas components’ end connections, creating a pressure tight seal which provides a compact and streamlined connection. Several gas products used in meter sets have internal and/or external thread(s) manufactured into them, which are often tapered or straight.

Threaded connections must adhere to industry standards. 阀门, 酒吧, 配件, and pipe must all be created using the same standard to make a proper connection. Below are common standards that must be followed at the natural gas meter set:

• ASME B16转椅.33 = Manually operated metallic gas valves for use in gas piping systems up to 175 PSIG (sizes 1/2” through 2”)
• ASME B1.20.1 = Pipe threads, general purpose NPT
• ASTM B584 = Copper alloy sand castings
• ASTM A126 = Gray iron castings
• ASTM A106 =钢管
• Other natural gas distribution parts comply with ANSI B16.1和ANSI B16.5 standards regarding the design of the part

A thread gage is used to measure threads and for checking/determining the pitch, 螺纹角, 或螺纹的直径. There are different types of gages for different functions:

• Plug gages are used to check internal threads. These may be labeled as NPT L1, ANPT L3, and ANPT 6-step truncation gages.
• Ring gages are used to check external threads. These may be labeled as NPT L1, ANPT L2, and ANPT 6-step truncation gages.

The American National Standard Pipe Thread, 或NPT螺纹, is a tapered thread designed to make a pressure tight seal. As previously stated, the requirements f或NPT螺纹s are spelled out in ANSI B1.20.1. The NPT thread form is similar to most other threads because it has a 60-degree 螺纹角. The root and the crest (or peak and valley) of the thread is truncated (flat). NPT螺纹的锥度为1.78-degrees as this angle is what makes pipe threads become tight.

The Aeronautical National Pipe Taper Thread, 或ANPT线程, is a tapered thread similar to NPT threads but with more stringent gaging characteristics. The requirements f或ANPT线程s are spelled out in SAE AS71051. While NPT and ANPT are basically the same thread in form and shape for sizes up to 2”, 以下是它们的不同之处:

• ANPT threads have more specifications as ANPT uses three gages to check each thread while NPT only uses one gage. NPT threads only call out the NPT L1 gage, while ANPT have the additional ANPT L2 (or 3) and ANPT 6-step truncation gage.
• Because ANPT threads have more stringent specification and gaging requirements, they should be more consistent than NPT
• ANPT controls the taper angle of the threads, 不扩散核武器条约没有
• ANPT controls the truncation (flat or sharp threads), 不扩散核武器条约没有
• The gages used to check ANPT threads assures the thread length meets the wrench tight thread length in the ANSI standard, 不扩散核武器条约没有

Due to the stringent testing and standards surrounding ANPT threads, all A.Y. McDonald natural gas components are produced with them. This means that we use all three gages (L1, L2(3), and 6-step) to check our threads, but we only market them as meeting the NPT standard (ANSI B1.20.1). To learn more about the topic, call our customer service team at 1-800-292-2737, fill out a contact us form on 0933282516.com，或乘坐 “不扩散核武器条约》和. ANPT线程的 香鱼课程.