Definition -A Throttling Bush is a stationary bushing used to restrict and control fluid flow between high-pressure and low-pressure areas in rotating equipment. Its purpose is to regulate pressure, reduce internal leakage, and help balance axial thrust. Throttling bushes are commonly used in centrifugal and multistage pumps and other fluid-handling machinery.

Sunmach is a world-class manufacturer of heavy-duty throttling bushes, utilizing top-grade Nickel Alloys and Stainless Steel for maximum longevity. Our parts are produced exactly to customer specifications, maintaining precise dimensional control. These robust solutions are optimized for rugged industrial environments.

We are an ISO 9001:2015 certified company, demonstrating our commitment to rigorous quality standards and consistent product excellence to deliver the best of the Nickel Alloys & Stainless Throttling Bush.

We make these Throttling Bush from a range of high-performance & exotic materials such as : Hastelloy® C-276, Hastelloy® C-22, Hastelloy® B-2, Monel® 400, Monel® K-500, Inconel® 600, Inconel® 625, Inconel® 718, Titanium Grade 2, Titanium Grade 5, Titanium Grade 7, Duplex S31803, Duplex S32205, Super Duplex S32750 to various Stainless Steel grades of SS 304L, SS 316L SS 310, SS 310H, SS 347H, etc followed by Special Stainless Steel Grades such as 904L Stainless Steel, UNS N08904, DIN EN1.4539 Nitronic® 50, Nitronic® 60, UNS S21800, DIN EN, 254 SMO, UNS S31254, DIN EN 1.454, Stainless Steel 410 & Stainless Steel 420 etc.

Sunmach’s extensive manufacturing capabilities and In-Stock Genuine & Authentic Raw Material availability allows us to support demanding industrial requirements with durable, corrosion-resistant, heat resistant & reliable Shafts made from Genuine Nickel Alloys and Stainless Steel Material, delivered dot in time to any corner of the world, supported by all required test certificates and with 100% traceability.