Protective casings are designed for prevention of aggressive media spattering in case of pipeline flange coupling seal failure.

Polyethylene casings (GOST 16337-77) are produced in accordance to technical specification 2291-012-22955745-2014 for pipelines with nominal operating pressures up to 1.6 MPa (16 kgf/cm2) having the following pipeline diameters (OD): 57, 76, 89, 108, 133. The connecting dimensions are given in the table. It is possible to use a casing having OD 57 for dimension types OD 14, 18, 25, 32, 38 by means of applying additional rings centring the casing.

OD,mm d,mm D,mm h,mm H,mm Weight,kg
57 65 178 75 83 0.2
76 84 198 90 98 0.4
89 97 213 90 98 0.5
108 115 233 90 98 0.6
133 140 256 100 108 0.8

Polyethylene casings with centring rings of fluoroplast-4

OD,mm d,mm D,mm h,mm H,mm Weight,kg
14 19 178 75 83 0.4
18 23 178 75 83 0.4
25 30 178 75 83 04
32 37 178 75 83 0.4
38 43 178 75 83 0.4
45 50 178 75 83 0.4