FASTRA, s.r.o. / Patches FZVH

Patches FZVH

A patch for repairing pipes of FZVH type (hereinafter referred to as a patch) is used to repair locally damaged steel pipelines (e.g. damaged by corrosion or mechanical impact) with no leakage of medium or with leakage of medium, with the highest value of operating pressure up to 40 bar. There is a relief valve mounted to the outer side of the patch; the valve is used to release pressure of the sealing when the patch is applied. To handle the stopper and safe diversion of the leaking medium outside the installation area, the installation kit FZ-V (following 5.2-4.1 hereof) must be used. The upper edge of the neck and the stopper of the relief valve have been adjusted for a safety sealing weld to be made after the repair is completed.

záplaty

Table of standard dimensions is indicated in the following page.
Other dimensions should be consulted


Permissible overpressure of medium in the damaged piping when the patch is being applied:
in accordance with the working procedure approved by the operator
Permissible leakage of medium out of the damaged piping when the patch is being applied:
max. 150 m3/ hour
For other technical parameters following 5.2

TABLE OF STANDARD DIMENSIONS
  Name - dimension D
[mm]
L
[mm]
Patch width Patch wall Inner side Catalogue No.
A
[mm]
O S
[mm]
bevel 45°
/X [mm]
K
[mm]
Y
[mm]
Patch FZVH DN50 x 150 60,3 150 100 1/2 5,0 1,6 15 5 520-2215-060
Patch FZVH DN65 x 150 76,1 150 130 1/2 520-2215-076
Patch FZVH DN80 x 150 88,9 150 100 1/3 6,3 1,6 520-2215-088
Patch FZVH DN80 x 300 300 150 1/2 520-2230-088
Patch FZVH DN80 x 500 500 150 520-2250-088
Patch FZVH DN100 x 150 108 150 115 1/3 7,1 1,7 20 10 520-2215-108
Patch FZVH DN100 x 300 300 180 1/2 520-2230-108
Patch FZVH DN100 x 500 500 180 520-2250-108
Patch FZVH DN125 x 150 133 150 145 1/3 6,3 1,6 520-2215-133
Patch FZVH DN125 x 300 300 145 520-2230-133
Patch FZVH DN125 x 500 500 145 520-2250-133
Patch FZVH DN150 x 150 159 150 125 1/4 7,1 1,7 520-2215-159
Patch FZVH DN150 x 300 300 170 1/3 520-2230-159
Patch FZVH DN150 x 500 500 170 520-2250-159
Patch FZVH DN200 x 150 219,1 170 170 1/4 30 520-2215-219
Patch FZVH DN200 x 300 300 230 1/3 520-2230-219
Patch FZVH DN200 x 500 500 230 520-2250-219
Patch FZVH DN250 x 150 273 175 175 1/5 10,0 2,5 520-2215-273
Patch FZVH DN250 x 300 300 220 1/4 520-2230-273
Patch FZVH DN250 x 500 500 295 1/3 520-2250-273
Patch FZVH DN300 x 150 323,9 170 170 1/6 40 520-2215-323
Patch FZVH DN300 x 300 300 205 1/5 520-2230-323
Patch FZVH DN300 x 500 500 350 1/3 520-2250-323
Patch FZVH DN350 x 200 355,6 200 190 1/6 520-2215-355
Patch FZVH DN350 x 300 300 290 1/4 520-2230-355
Patch FZVH DN350 x 500 500 380 1/3 520-2250-355
Patch FZVH DN400 x 200 406,4 210 210 1/6 520-2220-406
Patch FZVH DN400 x 300 300 325 1/4 520-2230-406
Patch FZVH DN400 x 500 500 435 1/3 520-2250-406
Patch FZVH DN500 x 200 508 200 200 1/8 520-2220-508
Patch FZVH DN500 x 300 320 320 1/5 520-2230-508
Patch FZVH DN500 x 500 500 545 1/3 520-2250-508


Z=51mm for all dimensions of the patches (hright of the relief valve)
B=24mm for all dimensions of the patches (diameter of the relief hole)
L, A, S, X, K, Y, Z, B - for dimensions following the scheme
D - outer diameter of the repaired pipeline
O - part of the circuit repaired pipeline covering overlays the patch
6-03-2020, 14:48
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