WRA-3392TechSpecs.pdf
PDF 272 KB Posted
- Attached to
- Purchase of One (1) Centrifugal Blower Gardner Denver Serial No. MO47880, Model No. 74108C1 (or equa
- Solicitation number
- S127719-vCurrent
- Issued by
- Suffolk County, Boston City, Chelsea City, Massachusetts
About this file
This document is a set of technical specifications for a gas boosting compressor for a state or local government contract opportunity. The compressor is specified as a Hoffman Air and Filtration Systems model 74108C1, or equivalent, with a 1-stage design, 8-inch inlet and outlet connections, 3550 RPM operating speed, and a capacity range of 675 to 2000 CFM at discharge pressures between 9.5 and 10.5 PSIG. The compressor is direct drive with a 1-7/8" shaft diameter, and key materials of construction include cast iron, stainless steel, and fabricated steel.
The document provides detailed technical requirements for the compressor, including dimensions, weight, performance data, and construction specifications. No other information is provided regarding the overall contract opportunity, such as quantities, response deadlines, award criteria, or contract term.
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Other files
| File | Type | Posted |
|---|---|---|
| WRA-3392.pdf | ||
| S127719-vCurrent_OD.xlsx | XLSX spreadsheet |
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Text version
SPECIFICATIONS
Gas Boosting Compressor
WRA# 3392
TECHNICAL DATA
Manufacturer:
Hoffman Air and Filtration Systems:
MODEL# 74108C1,
SERIAL# M047880, or equal
Size: Inlet (IN. NOM): 8”
Outlet (IN. NOM): 8”
Number of Stages: 1 through 9 (10 for 50 Hz.).
Inlet Connection: 8” flange
Outlet Connection: 8” flange
Operating Speed: 3550RPM
Seals (air): Two carbon rings each end.
Seals (gas): Four carbon rings each end with inert gas injection taps
Bearings: Ball, 10 year minimum life per AFBMA.
Lubrication: Grease standard
Impeller Diameter: 24”
Impeller Tip Speed: 372 FPS
First Critica’ Speed: 4323 RPM (9 stage).
Direct Drive: Yes
Vibration Tolerance: 0.28”/second
Shaft End: 1-7/8”diameter, inlet end drive standard.
Rotor Balance: Impellers are statically balanced individually. Complete rotating assemblies are dynamically balanced.
Maximum Casting Pressure: 25 PSIG
Flow (CF, @ 68 DEG F):
Min. Flow: 675 CFM
Max. Flow: 2000 CFM
Discharge Pressure (PSIG):
Min. Pressure: 9.5 PSIG
Max. Pressure: 10.5 PSIG
RPM: Min. RPM: 3550
Max. RPM: 3570
Drive Connection: 1 7/8 DIA, ½ c ¼ KWY
DIMENSIONS (MODEL# 74108C): 96” x 41-15/16”
Weight: 3860 lbs.
Rotor WK2: 38
MATERIALS OF CONSTRUCTION
Casing: Heads, Sections and Bearing housing: Cast Iron A48-48 Class 30
Tie Rods: ¾” diameter cold drawn steel
Joint Sealing Compound: RTV Silicone
Shaft: Stainless Steel, AISI 1045
Impellers: Stainless Steel and Heresite coated internal surfaces, stainless steel blower shaft, gas construction, closed bearing housing on inlet end, John Crane mechanical seal on drive end.
Base: Fabricated Steel.
Motor Pedestal: Welded steel plate
Finish: Blue enamel over rust inhibitive primer
Base Pads: Cork Strips
Interstage Baffles: AISI 300 series stainless steel
File details come from the government source that posted it. Updated .