68 Series Visco Jet® Multi-Orifice Restrictor

Flow Restrictors

68 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 protecting for bidirectional flow, the 68 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:0.68 inches
Metered Flow Range:1370 to 19,600 Lohms
Test Fluid:Water
Operating Pressures:Up to 3000 psi

For More Information

Technical Hydraulic Handbook of Aerospace, Energy, and Motorsport Solutions Page B50 - B51

Product Information

General Performance

Characteristic	Specification
Lohm Rate Tolerance	± 5% or ± 10%
Maximum Working Pressure	3000 psid
Nominal Weight	24.7 - 35.8 grams

Materials

PART	MATERIAL	SPECIFICATION
Body	303 CRES	QQ-S-763C
Visco Stack	304L CRES	ASTM A 666
Screens	304L CRES	ASTM A 666
Spacers	303 CRES	QQ-S-763C
End Washer	303 CRES	QQ-S-763C
Shims	304L CRES	ASTM A 666
“A” Washer	303 CRES	QQ-S-763C
Back Up Rings	Customer Supplied	(MS28774-015)
“O” Ring	Customer Supplied	(M83248/2-015)

Finish: All CRES Parts Passivated

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.

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Dimensional View

Installation Hole Details

Part Numbers & Specifications

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Tolerance

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PART NUMBER	Tolerance All	LOHM RATE	"L" Dimension (in)	"A" Depth Ream ± 0.002 (in)	Minimum Passage Size (in)	Total Screen Area (in²)	Screen Open Area (in²)	Screen Hole Size (in)	Request Information
VDCA6825137D	± 5%	1370 Lohms	0.702	0.797	0.062	No Screens	No Screens	No Screens	Request
VDCA6825181D	± 5%	1810 Lohms	0.92	1.015	1.062	No Screens	No Screens	No Screens	Request
VDCA6815880D	± 5%	8800 Lohms	0.702	0.797	0.032	0.208	0.079	0.02	Request
VDCA6815124H	± 5%	12,400 Lohms	0.702	0.797	0.032	0.208	0.079	0.02	Request
VDCA6815152H	± 5%	15,200 Lohms	0.92	1.015	0.032	0.208	0.079	0.02	Request
VDCA6815176H	± 5%	17,600 Lohms	0.92	1.015	0.032	0.208	0.079	0.02	Request
VDCA6815196H	± 5%	19,600 Lohms	1.029	1.124	0.032	0.208	0.079	0.02	Request
VDCA6820137D	± 10%	1370 Lohms	0.702	0.797	0.062	No Screens	No Screens	No Screens	Request
VDCA6820181D	± 10%	1810 Lohms	0.92	1.015	1.062	No Screens	No Screens	No Screens	Request
VDCA6810880D	± 10%	8800 Lohms	0.702	0.797	0.032	0.208	0.079	0.02	Request
VDCA6810124H	± 10%	12,400 Lohms	0.702	0.797	0.032	0.208	0.079	0.02	Request
VDCA6810152H	± 10%	15,200 Lohms	0.92	1.015	0.032	0.208	0.079	0.02	Request
VDCA6810176H	± 10%	17,600 Lohms	0.92	1.015	0.032	0.208	0.079	0.02	Request
VDCA6810196H	± 10%	19,600 Lohms	1.029	1.124	0.032	0.208	0.079	0.02	Request
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68 Series Visco Jet^® Multi-Orifice Restrictor Model

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