Valco Filters for GC - Replacement Screens

replacement screens

How do I know for sure that I need a screen and not a frit?

If you know the filter product number, here is the critical information: all filters with replaceable frits have a product number which ends with an F, for "frit". In most cases, there is an identical product number without the F for a nearly identical filter with a replaceable screen.

If you know the product number and determine that it doesn't end in F, find the product number in the table below to see what diameter screen is required, then scroll down the page to see the available options.

If you know the product number and it does end in F, you need a frit. Go to this page >.

If you don't know the product number, read this >.

Visual identification of frits and screens

If you cannot use the product number to determine if you need a frit or a screen, you must take apart the filter and examine the filter element itself to determine the diameter and whether it is a frit or a screen. The diameter is easily determined by measurement with any simple ruler on hand.

Measuring the thickness requires calipers, but here is a useful guideline: the thickest screen is 0.125 mm. For comparison, a typical double-edged razor blade is .1mm - .12mm. In contrast, the thinnest 1/16" frit is 0.75 mm thick; two of them stacked are roughly the thickness of a dime. Hope that narrows it down a bit! Hide >

Filters organized by screen diameter

Screen diameter Filter product number
1/16" ZUFR.5
ZBUFR.5
ZBUFR1.5
ZBRUFR1.5
1/8" ZUFR1C
ZBUFR1C
ZUFR1
ZBUFR1
ZRUFR21
ZBRUFR21
1/4" ZUFR2
ZBUFR2
ZRUFR41
ZBRUFR41
ZRUFR42
ZBRUFR42

Replacement screens

All removable screen filters were originally supplied with a 2µ stainless screen, but replacement stainless steel screens are available in several thicknesses and pore sizes. Sold in packages of 10.

Screens with other pore sizes and thicknesses may be available or special-ordered in OEM quantities.

Note: If a filter was ordered with a removable screen, the screen cannot be replaced with a frit.

Diameter Pore size Thickness Product No.
1/32"
(pkg. of 10)
0.050 mm 1SR.5-10
0.075 mm 2SR.5-10
1/16"
(pkg. of 10)
0.050 mm 1SR1-10
0.075 mm 2SR1-10
1/8"
(pkg. of 10)
0.050 mm 1SR2-10
0.075 mm 2SR2-10
1/4"
(pkg. of 10)
0.075 mm 2SR4-10
10µ 0.125 mm 10SR4-10

MORE INFORMATION

SEE ALSO

TECH TIP

Frits and screens have significantly different thicknesses, so they cannot be used interchangeably in the same filter body.