
INSTALLATION / OPERATION / MAINTENANCE
MODEL
X43H
H Style Strainer
The Cla-Val Model X43H H-Style Strainer offers an effective means of
removing unwanted solid particles in pipeline flow. These strainers are
ideal for preventing fouling, and debris and particle buildup in Cla-Val
Automatic Control Valves. The large flow area design, with a flat stainless steel strainer mesh perpendicular to flow, is ideal for low pressure
drop applications.
Maintenance
The Cla-Val Model X43H is fast and easy to maintain with the compact
H-pattern, requiring service without removal from line. Routine maintenance requires only removal of the top cover and removing unwanted
solid particles and debris from valve and wire cloth mesh strainer. The
strainer may be installed in any position, however, installation with cover
up is recommended.
INTRODUCTION
When ordering wire cloth, mesh size and wire diameter are critical
dimensions.
MESH SIZE
Mesh size can be indicated by three different terms: Distance Between
Wires, Mesh per Inch, and Space Size.
THE DISTANCE BETWEEN WIRES
The Distance Between Wires dimension is the distance between adjacent wires, measuring from the center of both wires. The Mesh per
Inch dimension is the number of openings within an inch of the wire
cloth. This dimension is expressed as two numbers, such as 3 x 3,
which means there are three openings horizontally and three openings
vertically in one inch.
THE SPACE SIZE DIMENSION
The Space Size dimension, also known as clear opening, is the actual open space between adjacent wires. This term is unique to space
cloth.
WIRE DIAMETER
Wire diameter indicates the thickness of the wire. As the wire gets thinner, the opening width and open area dimensions get larger within wire
cloth of the same mesh size. For example, 2 x 2 mesh size with 0.120"
wire diameter has 57.8% open area, compared to 2 x 2 mesh with thinner 0.047" wire diameter, which has 82.1% open area. Also, as the
wire diameter decreases, wire flexibility increases.
MESH
Mesh designates the number of openings and fractional parts of an
opening, per lineal inch. Mesh is determined by counting the number
of openings from the center of any wire to the center of a parallel wire,
one inch in distance. When the point one inch distant from the center
of a wire falls between wires within an opening, the mesh count is
expressed as a fraction.
Note: When ordering parts always refer to the catalog number and
stock number on the valve nameplate.
Wire cloth is offered in six different styles to meet the demands of
your particular requirements. For more information about each style,
please contact a Cla-Val Regional Sales Office.
Strainer Wire Cloth Mesh Information continued on back page

WIRE MESH CHART
X43H Sizes
Inch mm Inch mm % Ratio Inch mm % Ratio inch mm % Ratio
1 1⁄2” 40 0.078 2.000 55% 8.2 0.066 1.680 52% 8.0 0.056 1.410 50% 7.8
2” 50 0.078 2.000 55% 5.2 0.066 1.680 52% 5.0 0.056 1.410 50% 4.9
2 1⁄2” 65 0.078 2.000 55% 3.1 0.066 1.680 52% 3.0 0.056 1.410 50% 2.9
3 80 0.078 2.000 55% 3.5 0.066 1.680 52% 3.3 0.056 1.410 50% 3.3
4 100 0.078 2.000 55% 2.2 0.066 1.680 52% 2.0 0.056 1.410 50% 2.0
6 150 0.078 2.000 55% 2.0 0.066 1.680 52% 1.9 0.056 1.410 50% 1.8
8 200 0.078 2.000 55% 1.7 0.066 1.680 52% 1.6 0.056 1.410 50% 1.5
10 250 0.078 2.000 55% 2.8 0.066 1.680 52% 2.7 0.056 1.410 50% 2.6
12” 300 0.078 2.000 55% 1.9 0.066 1.680 52% 1.8 0.056 1.410 50% 1.8
14” 350 0.078 2.000 55% 1.4 0.066 1.680 52% 1.3 0.056 1.410 50% 1.3
16” 400 0.078 2.000 55% 2.0 0.066 1.680 52% 1.9 0.056 1.410 50% 1.8
20” 500 0.078 2.000 55% 2.0 0.066 1.680 52% 1.9 0.056 1.410 50% 1.8
24” 600 0.078 2.000 55% 1.4 0.066 1.680 52% 1.3 0.056 1.410 50% 1.3
*X43H Standard Mesh
Screen Opening
Inch mm Inch mm
0.0132 0.355 58 0.0040 0.102 59.0% Bolting
0.0130 0.330 54 0.0055 0.140 49.4% Bolting
0.0127 0.330 60 0.0040 0.102 57.8% Bolting
0.0127 0.323 58 0.0045 0.114 54.6% Bolting
0.0125 0.318 50 0.0075 0.191 39.1% Mill
0.0122 0.310 60 0.0045 0.114 53.3% Bolting
0.0121 0.307 62 0.0040 0.102 56.5% Bolting
0.0113 0.287 70 0.0030 0.076 62.4% Bolting
0.0112 0.284 66 0.0040 0.102 54.2% Bolting
0.0112 0.284 55 0.0070 0.178 37.9% Mill
Screen Opening
10 Mesh*
Open Area
Screen Opening Open Area Screen Opening Open Area
WIRE MESH CHART
Mesh
12 Mesh
Wire Diameter
14 Mesh
Open Area Product Group
Screen Opening
Inch mm Inch mm
0.0111 0.281 64 0.0045 0.114 50.7% Bolting
0.0110 0.279 50 0.0090 0.229 30.3% Market
0.0106 0.269 70 0.0037 0.094 54.9% Bolting
0.0106 0.269 66 0.0045 0.114 49.4% Bolting
0.0103 0.262 70 0.0040 0.102 51.8% Bolting
0.0102 0.259 72 0.0037 0.094 53.8% Bolting
0.0102 0.259 60 0.0065 0.165 37.5% Mill
0.0099 0.251 72 0.0040 0.102 50.7% Bolting
0.0098 0.249 74 0.0037 0.094 57.2% Bolting
0.0095 0.241 74 0.0040 0.102 49.6% Bolting
Screen Opening
Inch mm Inch mm
0.0095 0.241 76 0.0037 0.094 51.7% Bolting
0.0094 0.239 84 0.0025 0.063 62.4% ----
0.0092 0.234 76 0.0040 0.102 48.4% Bolting
0.0092 0.234 60 0.0075 0.191 30.3% Market
0.0091 0.231 78 0.0037 0.094 50.6% Bolting
0.0088 0.224 80 0.0037 0.094 49.6% Bolting
0.0088 0.224 78 0.0040 0.102 47.3% Bolting
0.0087 0.220 60 0.0080 0.203 27.0% Market
0.0085 0.216 80 0.0040 0.102 46.2% Bolting
0.0084 0.213 84 0.0035 0.089 49.8% Bolting
Mesh
Mesh
Wire Diameter
Wire Diameter
Open Area Product Group
Open Area Product Group
For a more detailed IOM Manual go to www.cla-val.com or contact a Cla-Val Regional Sales Office.
CLA-VAL
P.O. Box 1325
• Newport Beach, CA 92659-0325
• Phone: 949-722-4800
• Fax: 949-548-5441
• E-mail:
[email protected] • Website cla-val.com
©
Copyright Cla-Val 2009 Printed in USA Specifications subject to change without notice.
N-X43H Strainer Mesh Information (R-4-09)