United Brass Works 905PW Long Shank Upper Fixture Overview
The United Brass Works 905PW is a 1/2-inch long shank upper water gauge fixture designed for industrial water-level indication systems, including steam boiler and vessel applications. It serves as the upper connection in a compatible gauge glass assembly, allowing the liquid level inside the equipment to be viewed through the installed sight glass.
The Model 905PW is the plastic hand wheel version of the United Brass Works Model 905. The manufacturer lists the 905PW separately within its water gauge fixture product family and identifies the standard Model 905 as available with a plastic hand wheel under Part 905PW. United Brass Works, Inc.
The United Brass Works 905PW uses a long shank configuration, which provides additional projection from the vessel or boiler connection compared with a short-shank fixture. This design can be useful where installation geometry, insulation, piping arrangement, or gauge-glass positioning requires additional clearance.
United Brass Works specifies its Model 905 design for 250 WSP at a maximum temperature of 406°F and 400 WOG. The fixture incorporates a rising stem and bronze body, providing a durable manually operated isolation point for industrial gauge applications. United Brass Works, Inc.
The rising-stem configuration provides visible movement as the valve is opened or closed. This can assist operators during normal operation and when isolating the gauge glass assembly for inspection, cleaning, or replacement.
The primary difference between the 905PW and standard 905 is the hand wheel material. The standard Model 905 uses a ductile iron hand wheel, while the 905PW is supplied with a plastic hand wheel. United Brass Works specifically identifies several models within its water gauge fixture range as using alternative plastic or aluminum hand wheels depending on the configuration. United Brass Works, Inc.
The fixture design also incorporates brass components for the stem, packing nut, glass washer nut, and bevel washers, together with an EPDM glass washer and NAFG packing in the underlying Model 905 construction. These components help form the sealing and operating assembly for the water gauge fixture. United Brass Works, Inc.
When installed as part of a complete water gauge system, the upper fixture works together with a compatible lower fixture, gauge glass, washers, packing components, and any required protective hardware. Proper selection of the gauge glass length and fixture configuration is important to ensure correct installation and reliable visual water-level indication.
The Model 905 family uses a 1/2-inch connection and a long-shank configuration. Published Model 905 dimensions are approximately 1.25 inches for dimension A, 5.15 inches for dimension B, and 4.97 inches for dimension C. Since United Brass Works identifies 905PW as the plastic-hand-wheel version of this fixture, these dimensions apply to the underlying 905 configuration. United Brass Works, Inc.
United Brass Works assigns CRN OCO7135.2C to the Model 905 fixture family. Manufacturer documentation also states that the product contains lead and is not intended for use in potable water systems. United Brass Works, Inc.
For industrial boiler maintenance, water-level monitoring systems, or replacement of an existing upper gauge fixture where a plastic hand wheel is preferred, the United Brass Works 905PW provides a long-shank bronze fixture designed for demanding gauge applications
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