Armstrong SG-86 516860-027 8x6in 125# 175PSI Pump Suction Guide

The Armstrong SG-86 (P/N 516860-027) is a new, cast iron pump suction guide designed as a multi-function fitting that combines a long-radius elbow, strainer, balance valve connection port, pressure/temperature test connections, and a draining/venting port into a single flanged body — eliminating the need for five or more separate fittings at the pump suction inlet. The model designation "SG-86" encodes an 8-inch suction (pump-side) flange and a 6-inch inlet flange, both rated ASME Class 125# (flat-face, cast iron standard), consistent with the nameplate marking "125#." The unit is nameplate-rated at 175 PSI maximum working pressure and 300°F maximum operating temperature, making it compatible with hydronic heating, cooling, and HVAC chilled/hot water closed-loop systems where Armstrong base-mounted or in-line centrifugal pumps are installed. The internal cross-vane strainer basket (visible in the end-view photo) protects the pump impeller from debris during startup; a yellow "TEMPORARY STRAINER — REMOVE AFTER 48 HRS" warning tag remains intact, confirming the strainer is still in place. Part number suffix "-027" identifies this as a specific Armstrong catalog variant (catalog reference 508283-000 also visible on the nameplate), and date code 0322 indicates manufacture in March 2022.

Product Specifications