Forged Bellow Seal Gate Valve, A105N, CL150-600 1/2-4 Inch, Flanged

Description

This document outlines the specified part names and their corresponding applicable materials in detail, which are commonly selected for industrial valve applications to ensure reliable performance, structural integrity, and compatibility with diverse operating conditions including varying pressures, temperatures, and corrosive media.
For the body and bonnet, a wide range of high-performance ferrous and non-ferrous alloys are available, such as A105, LF2, F5, F22, F304(L), F316(L), F347, F321, F51, F55, as well as high-nickel alloys including Inconel, Monel, and Hastelloy, among other premium materials, to meet stringent industrial standards and service requirements.
The seat is constructed from ASTM A276 410 stainless steel with additional hard facing (HF) treatment to enhance wear resistance, sealing durability, and service life under frequent operation. The wedge is manufactured from ASTM A276 420 stainless steel, chosen for its excellent hardness, mechanical strength, and resistance to deformation and abrasion. Both the stem and gland utilize ASTM A276 410 stainless steel, providing reliable strength, corrosion resistance, and dimensional stability for critical moving and clamping components.
The gasket is a composite structure made of 304 stainless steel combined with graphite, delivering superior sealing performance, high-temperature resistance, and resilience under thermal cycling. The handwheel is produced from ASTM A197 cast iron, offering robust structural rigidity and cost-effective operability. Packing is made of graphite, delivering excellent thermal stability, lubricity, and tight sealing for stem areas. Finally, the bellows are formed from ASTM A240 316 stainless steel, ensuring exceptional corrosion resistance, flexibility, and leak-tight performance in dynamic and corrosive working environments.