Bleed Ring

A bleed ring is a full-face flange accessory with one or two radial service connections that communicate with the process bore. It is installed in a compatible flanged joint and held by the through-bolting, providing an engineered access point for bleeding, venting, flushing, or connection of calibration equipment.

No. The HBR is a pressure-containing flange accessory and does not contain a sensing diaphragm or instrument fill fluid. It can be used in the same process-measurement systems as diaphragm seals, but its function is to provide service-port access at the flange joint.

The HBR is a full-face ring with flange bolt holes and is retained directly by the joint through-bolting. The HFR is Haygor's calibration / flushing ring accessory published for HFF Flush Flanged and HFP Flanged Pancake seal assemblies. Select between them by reviewing the actual flange stack, seal geometry, face style, bore, bolt pattern, dimensions, and controlled drawing.

Haygor's published ordering information lists 2-inch, 3-inch, and 4-inch ANSI sizes plus DN50, DN80, and DN100. An other-as-specified code is also listed. Several PN rating rows mention DN125, so DN125 and any size outside the primary size table should be confirmed with Haygor before design release.

The published ANSI selections are Classes 150, 300, 600, 900, 1500, and 2500. Published DIN/EN-style PN selections include PN 10/40, PN 10/16, PN 25/40, PN 63, PN 100, PN 160, and PN 250 with size limitations. A class or PN designation is not a single universal pressure value; allowable pressure depends on material, temperature, size, standard, bolting, gasket or ring, ports, and the complete assembly.

Haygor publishes ANSI Raised Face, ANSI Ring Joint (RTJ), and DIN Raised Face configurations. The ring face, bore, gasket or RTJ groove, flange standard, nominal size, rating, and mating components must be reviewed as one joint.

Yes. Published selections include single or dual service connections. Choose the quantity based on the operating procedure, desired flow path, valve and plug arrangement, port orientation, and access for maintenance.

The ordering guide lists single or dual 1/4-inch NPT female, single or dual 1/2-inch NPT female, single or dual 1/4-inch pipe socket weld, and single or dual 1/2-inch pipe socket weld connections. External valves, fittings, plugs, tubing, and weld procedures must be specified separately unless included in the quotation.

Haygor lists 316/316L stainless steel, 304/304L stainless steel, Alloy 20, Alloy C-276, Alloy B-3, Monel 400, Alloy 600, Alloy 2205, Nickel 201/200, Titanium, and Zirconium 702. Material selection must account for both the process fluid and any bleed, vent, flush, or calibration medium, along with temperature, pressure, corrosion, erosion, and fabrication requirements.

Haygor's current navigation and configurator label the product HBR – Bleed Ring. The August 2021 diaphragm-seal ordering guide labels the full-face product HBF – Full Face Bleed Ring. Use the model designation generated by the live configurator or confirmed on Haygor's quotation, especially when matching legacy documentation.

Provide the flange standard, nominal size, class or PN rating, Raised Face or RTJ configuration, bore and gasket or ring requirements, single or dual port arrangement, NPTF or socket-weld port size, port orientation, body material, process and service fluids, operating and design pressures, temperatures, bolting and stack-up constraints, valves or plugs, testing, cleaning, certification, and documentation requirements.