How to express the welded joint model of seismic pressure gauge
The pressure gauge joint is used to connect the device or pipeline of the measured medium to the pressure gauge. The pressure gauge joint has various forms, including welded pipe joints, expanded pipe joints, three-way middle joints, and elbow middle joints. , Straight-through intermediate joints, straight-through taper pipe joints, pressure gauge straight-through joints, card sleeve pipe joints, etc.
There is a certain correlation between the pressure gauge connector thread specification and the pressure gauge dial diameter. The commonly used pressure gauge connector specifications in China are as follows: Pressure gauge connector thread size: Metric thread: Ma*b, British thread: G*″, American thread: * "NPT (electromagnetic flowmeter) (pressure transmitter) pressure gauge connector thread technical term: the pitch is the distance between two threads. The cusp angle is the degree of the thread cusp angle. Pressure gauge connector thread 1. Metric: M20×1.5 "20" means the diameter of the threaded joint is 20mm; "1.5" means the distance between the thread and the thread is 1.5mm; "M" means the cusp angle is 60 ° pipe thread; in general: φ40 connecting thread size is M10×1; φ60 connecting thread size is M14×1.5. The connecting thread size of φ100 and φ150 is M20×1.5; 2. Inch system: G1/2 "" "" represents inch 1" = 25.4mm "G" represents non-self-sealing pipe thread "1/2" with a cusp angle of 55° ”Is the diameter of the connecting pipe. Generally there are: G1/2” Generally, φ100, φ150 use this thread G1/4”, and φ60 use this thread G1/8”, G3/4”, G3/8”, ZG1/ 2" (R1/2"), "ZG" (R) represent non-self-sealing tapered pipe threads with a cusp angle of 55°. [2] American system: 1/2 "NPT "NPT" stands for self-sealing spinal canal thread model Y-50Y-60Y-75Y-100Y-150 with a cusp angle of 60°. Dial diameter ф50ф60ф75ф100ф150 Common thread metric thread M14×1.5M20× 1.5 inch thread ZG1/4"ZG3/8", G3/8", 3/8NPTG1/4"ZG1/2", G1/2", 1/2NPT1/4NPT
Pressure gauge gauge joint material 1. Carbon steel: used for general medium measurement system or ammonia pressure measurement series; 2. Stainless steel: generally 304SS, 316SS, 316L, titanium, Monel, etc.
