H1400-40 - Smith H1400 Series 40 SCFH Fixed Flow Orifice Adaptor

Precise Gas Control for Industrial Welding

The Smith Equipment H1400-40 Fixed-Flow Adaptor is an essential component for maintaining strict quality control and efficiency in industrial welding environments. Part of the H1400 Series, this device is engineered to deliver a constant flow rate of 40 SCFH (Standard Cubic Feet per Hour) when supplied with a pressure of 30 PSIG. By utilizing a fixed orifice system, it eliminates the variability associated with adjustable flowmeters, ensuring that every weld station operates within the specific parameters of the Welding Procedure Specification (WPS).

Designed for versatility, the H1400-40 can be installed directly into the outlet of a standard regulator or mounted onto pipeline drops in bulk gas distribution systems. The unit features a dual-thread configuration, accommodating both 5/8"-18 UNF and 1/4" NPT connections, making it compatible with a wide range of standard gas equipment. A critical feature of this assembly is the built-in inlet filter, which screens out particulate matter and debris that could otherwise clog the precision orifice or contaminate the weld pool.

For facility managers and welding engineers, the H1400-40 represents a low-maintenance, high-reliability solution to gas management. By fixing the flow rate at the source, it prevents unauthorized adjustments, reduces shielding gas waste, and standardizes process variables across multiple workstations. This adaptor is particularly effective for MIG and TIG applications where consistent shielding gas coverage is paramount to preventing porosity and ensuring mechanical integrity.