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View Flow Restrictors for
8 mm Insert Single Orifice Restrictor for Gases
8 mm Insert Single Orifice Restrictor for Gases
Flow Restrictors

8 mm Insert Single-Orifice Restrictor for Gases

This highly accurate flow restrictor is self-retained, threadless, and reliable. The orifice is designed for installation into metal housings and is 100% flow tested on nitrogen to ensure that every part is within ± 5% of its nominal flow rate. Tighter tolerances are available as custom configurations. To increase accuracy, the orifice is tested in the direction of use. An integral safety screen is incorporated for configurations with an orifice diameter of 0.5 mm (0.020 of an inch) or below. This restrictor is constructed entirely of stainless steel.

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Key Product Facts
  • Mounting Configuration:Insert - Into Metal
  • Diameter:7.95 mm
  • Metered Flow Range:500 - 45,000 Lohms
  • Test Fluid:Clean & Dry Nitrogen
  • Maximum Working Pressure:21 MPa
For More Information

Product Information

General Performance
Characteristic Specification
Lohm Rate Tolerance ± 5%
Test Fluid Clean & Dry Nitrogen
Maximum Working Pressure 21 MPa
Designed for Installation Into Metals, Such as Aluminum, Brass, Cast Iron, Stainless Steel, and Steel
Materials
COMPONENT MATERIAL
Body 303 Stainless Steel
Pin, Unscreened 416 Stainless Steel
Pin, Screened 303 Stainless Steel
Screen 316 Stainless Steel
Screen Body 303 Stainless Steel
Cross Section Views
Unscreened Metered Flow Forward Configuration
Dimensional Views
Unscreened Metered Flow Forward Configuration
This image is for reference only. All dimensions are in millimeters.
*Overall length before installation.
Installation Hole Details
Unscreened Metered Flow Forward and Reverse Configurations
Installation Hole Drawing Number: 1INST042008S
This image is for reference only. All dimensions are in millimeters.

Part Numbers & Specifications

This table below contains the part numbers and technical specifications for this product. If you have specific questions, need a quote, or would like to request a handbook or drawing, click the red request button in the column on the far right.

Part Numbers & Specifications
PART NUMBER FLOW DIRECTION LOHM RATE SCREEN MICRON RATING APPROXIMATE WEIGHT (g) INSTALLATION HOLE DRAWING NUMBER Request Information
RIGF8051005S Forward 500 Lohms N/A 1.3 1INST042008S Request
RIGF8051006S Forward 600 Lohms N/A 1.3 1INST042008S Request
RIGF8051008S Forward 800 Lohms N/A 1.3 1INST042008S Request
RIGF8051010S Forward 1000 Lohms N/A 1.3 1INST042008S Request
RIGF8051012S Forward 1200 Lohms N/A 1.3 1INST042008S Request
RIGF8051015S Forward 1500 Lohms N/A 1.3 1INST042008S Request
RIGF8053020S Forward 2000 Lohms 125 microns 1.6 1INST042008S Request
RIGF8053025S Forward 2500 Lohms 125 microns 1.6 1INST042008S Request
RIGF8053030S Forward 3000 Lohms 125 microns 1.6 1INST042008S Request
RIGF8053040S Forward 4000 Lohms 125 microns 1.6 1INST042008S Request
RIGF8053050S Forward 5000 Lohms 125 microns 1.6 1INST042008S Request
RIGF8053060S Forward 6000 Lohms 75 microns 1.6 1INST042008S Request
RIGF8053080S Forward 8000 Lohms 75 microns 1.6 1INST042008S Request
RIGF8053100S Forward 10,000 Lohms 75 microns 1.6 1INST042008S Request
RIGF8053120S Forward 12,000 Lohms 75 microns 1.6 1INST042008S Request
RIGF8053150S Forward 15,000 Lohms 75 microns 1.6 1INST042008S Request
RIGF8053200S Forward 20,000 Lohms 40 microns 1.6 1INST042008S Request
RIGF8053250S Forward 25,000 Lohms 40 microns 1.6 1INST042008S Request
RIGF8053300S Forward 30,000 Lohms 40 microns 1.6 1INST042008S Request
RIGF8053400S Forward 40,000 Lohms 40 microns 1.6 1INST042008S Request
RIGF8053450S Forward 45,000 Lohms 40 microns 1.6 1INST042008S Request
RIGR8051005S Reverse 500 Lohms N/A 1.3 1INST042008S Request
RIGR8051006S Reverse 600 Lohms N/A 1.3 1INST042008S Request
RIGR8051008S Reverse 800 Lohms N/A 1.3 1INST042008S Request
RIGR8051010S Reverse 1000 Lohms N/A 1.3 1INST042008S Request
RIGR8051012S Reverse 1200 Lohms N/A 1.3 1INST042008S Request
RIGR8051015S Reverse 1500 Lohms N/A 1.3 1INST042008S Request
RIGR8053020S Reverse 2000 Lohms 125 microns 1.7 1INST042010S Request
RIGR8053025S Reverse 2500 Lohms 125 microns 1.7 1INST042010S Request
RIGR8053030S Reverse 3000 Lohms 125 microns 1.7 1INST042010S Request
RIGR8053040S Reverse 4000 Lohms 125 microns 1.7 1INST042010S Request
RIGR8053050S Reverse 5000 Lohms 125 microns 1.7 1INST042010S Request
RIGR8053060S Reverse 6000 Lohms 75 microns 1.8 1INST042010S Request
RIGR8053080S Reverse 8000 Lohms 75 microns 1.8 1INST042010S Request
RIGR8053100S Reverse 10,000 Lohms 75 microns 1.8 1INST042010S Request
RIGR8053120S Reverse 12,000 Lohms 75 microns 1.8 1INST042010S Request
RIGR8053150S Reverse 15,000 Lohms 75 microns 1.8 1INST042010S Request
RIGR8053200S Reverse 20,000 Lohms 40 microns 1.8 1INST042010S Request
RIGR8053250S Reverse 25,000 Lohms 40 microns 1.8 1INST042010S Request
RIGR8053300S Reverse 30,000 Lohms 40 microns 1.8 1INST042010S Request
RIGR8053400S Reverse 40,000 Lohms 40 microns 1.8 1INST042010S Request
RIGR8053450S Reverse 45,000 Lohms 40 microns 1.8 1INST042010S Request

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The Lee Company has developed the Lohm Laws for defining and measuring resistance to fluid flow. The Lohm is defined such that 1 Lohm will flow 100 GPM of water with a pressure drop of 25 psi at a temperature of 80°F.

Lohms for Liquids Lohms for Gases