Flange (Loose Ring), Slip PVC Schedule 80 3/4" (854-007)

The 854-007 is a Schedule 80 PVC loose ring flange with a 3/4-inch slip (socket) connection and a free-rotating bolt ring. The socket end accepts the outside diameter of standard 3/4" Schedule 40 or Schedule 80 PVC pipe, secured with solvent cement to create a permanent, pressure-rated flanged termination. The bolt ring rotates independently around the flange stub, allowing bolt holes to be aligned precisely with any mating flange, valve body, pump port, or flanged equipment connection without twisting or repositioning the cemented pipe — a practical advantage in tight equipment rooms, congested mechanical spaces, or retrofit installations where rotating the pipeline after cementing is not possible.

The 854-007 occupies a specific position in the Schedule 80 PVC flange family: it shares the rotating ring alignment advantage of the 856-series loose ring spigot flange, but uses a slip socket connection rather than a spigot end. Where the 856 series cements its plain spigot end into an external socket fitting, the 854 accepts the pipe directly into its own socket — a subtler but important distinction when specifying the correct fitting for a given pipe termination geometry. For installations where bolt hole alignment flexibility is not required and a more compact one-piece assembly is preferred, the 851-series solid style slip flange is the appropriate alternative.

As with all PVC flat-face flanges, assemble with a full-face rubber gasket and stainless steel or non-metallic bolts, and torque in a cross pattern to the manufacturer's recommended specification. Never mate a raised-face steel flange directly against a PVC flat face — uneven clamping load from a raised face is a leading cause of PVC flange face cracking in the field. Apply a medium-bodied PVC primer and standard-bodied PVC cement per ASTM D2564 to both the pipe OD and socket interior before installation.

Specifications:

Industries & Applications:

• Industrial Process Piping — Provides a rotating-ring flanged termination on 3/4" Schedule 80 PVC process lines at pumps, valves, and instrumentation in chemical and industrial fluid handling systems where bolt hole alignment flexibility after cementing is required.
• Chemical Processing & Water Treatment — Used at chemical metering pump ports, filter housing flanges, and treatment equipment inlets in corrosion-resistant Schedule 80 systems where the loose ring design allows final bolt alignment at assembly without disturbing the cemented pipeline.
• Municipal & Commercial Plumbing — Provides a flanged termination on 3/4" Schedule 80 service lines at meters, isolation valves, and equipment connections in commercial systems where the rotating ring accommodates bolt pattern variations across different equipment manufacturers.
• Irrigation & Agricultural Systems — Installed at pump flanges, filter manifold connections, and control equipment ports on 3/4" Schedule 80 PVC systems where post-cement bolt hole alignment flexibility simplifies installation in prefabricated or modular equipment skids.
• Pool & Spa Equipment Rooms — Transitions 3/4" Schedule 80 chemical feed or auxiliary piping to flanged connections at dosing equipment ports and treatment system manifolds, with the rotating ring accommodating minor positional variation between equipment flanges and pipe centerlines.
• Laboratory & Semiconductor Facilities — Provides a flanged disconnect point in Schedule 80 PVC ultrapure water, acid waste, or reagent distribution systems where the loose ring design allows bolt alignment adjustments during equipment installation or replacement without repositioning cemented pipe runs.