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View Flow Restrictors for
Flow Restrictors

18 Series Visco Jet® Multi-Orifice Restrictor

This multi-orifice flow restrictor incorporates slots and spin chambers to form a complex fluid passage. This provides a greater minimum passage for a given restriction and is better suited to handle much higher levels of contamination. Additionally, the fluid velocity is reduced by the series of restrictions, thus reducing the chances of cavitation. With robust screens offering protection for bidirectional flow, the 18 Series Visco Jet® Multi-Orifice Restrictor is available calibrated to ± 5% or ± 10% tolerance.

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Key Product Facts
  • Type:Multi-Orifice
  • Diameter:0.187 inches
  • Metered Flow Range:11,200 to 313,000 Lohms
  • Test Fluid:Water
  • Operating Pressures:Up to 3000 psi
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Product Information

General Performance
Characteristic Specification
Lohm Rate Tolerance ± 5% or ± 10%
Maximum Working Pressure 3000 psid
Nominal Weight 1.4 grams
Materials
PART MATERIAL SPECIFICATION
Body 303 CRES QQ-S-763C
Pin 303 CRES QQ-S-763C
Internal Pin & Plug 303 CRES QQ-S-763C
Spacer 303 CRES QQ-S-763C
Visco Stack 304L CRES ASTM A 666
Screens 304L CRES ASTM A 666
Base Washer 304L CRES ASTM A 666
Braze - AMS 4774
Finish: All CRES Parts Passivated
Pins are prewaxed. Do not degrease. Do not lubricate.
DIMENSIONAL VIEWS & INSTALLATION HOLE DETAILS

For dimensions, please refer to the Part Numbers & Specifications tab.

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.

Image Specifications
Dimensional View
Installation Hole Details
Part Numbers & Specifications
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Tolerance
PART NUMBER
Tolerance
LOHM RATE "L" Dimension (in) Min "A" Dimension (in) Minimum Passage Size (in) Total Screen Area (in2) Screen Open Area (in2) Screen Hole Size (in) Request Information
VDCA1845112H ± 5% 11,200 Lohms 0.66 0.3 0.015 0.062 0.014 0.008 Request
VDCA1845162H ± 5% 16,200 Lohms 0.72 0.4 0.015 0.062 0.014 0.008 Request
VDCA1835176H ± 5% 17,600 Lohms 0.66 0.3 0.01 0.062 0.02 0.006 Request
VDCA1835240H ± 5% 24,000 Lohms 0.66 0.3 0.01 0.062 0.02 0.006 Request
VDCA1835330H ± 5% 33,000 Lohms 0.72 0.4 0.01 0.062 0.02 0.006 Request
VDCA1835410H ± 5% 41,000 Lohms 0.72 0.4 0.01 0.062 0.02 0.006 Request
VDCA1825800H ± 5% 80,000 Lohms 0.66 0.3 0.007 0.062 0.019 0.004 Request
VDCA1815145K ± 5% 145,000 Lohms 0.66 0.3 0.005 0.062 0.019 0.004 Request
VDCA1815198K ± 5% 198,000 Lohms 0.66 0.3 0.005 0.062 0.019 0.004 Request
VDCA1815243K ± 5% 243,000 Lohms 0.72 0.4 0.005 0.062 0.019 0.004 Request
VDCA1815280K ± 5% 280,000 Lohms 0.72 0.4 0.005 0.062 0.019 0.004 Request
VDCA1815313K ± 5% 313,000 Lohms 0.72 0.4 0.005 0.062 0.019 0.004 Request
VDCA1840112H ± 10% 11,200 Lohms 0.66 0.3 0.015 0.062 0.014 0.008 Request
VDCA1840162H ± 10% 16,200 Lohms 0.72 0.4 0.015 0.062 0.014 0.008 Request
VDCA1830176H ± 10% 17,600 Lohms 0.66 0.3 0.01 0.062 0.02 0.006 Request
VDCA1830240H ± 10% 24,000 Lohms 0.66 0.3 0.01 0.062 0.02 0.006 Request
VDCA1830330H ± 10% 33,000 Lohms 0.72 0.4 0.01 0.062 0.02 0.006 Request
VDCA1830410H ± 10% 41,000 Lohms 0.72 0.4 0.01 0.062 0.02 0.006 Request
VDCA1820800H ± 10% 80,000 Lohms 0.66 0.3 0.007 0.062 0.019 0.004 Request
VDCA1810145K ± 10% 145,000 Lohms 0.66 0.3 0.005 0.062 0.019 0.004 Request
VDCA1810198K ± 10% 198,000 Lohms 0.66 0.3 0.005 0.062 0.019 0.004 Request
VDCA1810243K ± 10% 243,000 Lohms 0.72 0.4 0.005 0.062 0.019 0.004 Request
VDCA1810280K ± 10% 280,000 Lohms 0.72 0.4 0.005 0.062 0.019 0.004 Request
VDCA1810313K ± 10% 313,000 Lohms 0.72 0.4 0.005 0.062 0.019 0.004 Request
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All dimensions are in inches. This information is for reference only.

Installation & Accessories

Replacement Parts & Accessories
Part Number Description
CUTA1870104C Installation / Extraction Tool Set
JEVA1870003B Replacement Pin
VDCA1871000A Master Set

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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