Certificate history:
This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
This Unit verification certificate is issued as verification that the Apparatus identified on page 1, was assessed and tested and found to comply with the IEC Standard list below. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
STANDARDS: The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:
As this is a Unit Verification Certificate, no QAR is applicable as this certificate is specific to the items listed by serial number or other unique identification.
The Type 475 and Type 477 Threaded Stopping Plugs comprise a solid plug of brass with an external thread form with a run out and a hexagon recess for tightening. The 475 range has the hexagon socket set into the face adjacent to the thread run out or the larger face in the case of the tapered threaded versions and the 477 range has the hexagon socket on the other end of the plug.Both types may be manufactured from brass, steel or stainless steel, and have the following thread forms.Thread Forms and size
Metric
Imperial conduit
PG
BSPP
NPT
16
½”
20
¾"
13.5
25
1"
32
1¼”
21
40
1½”
29
50
2”
36
2"
63
2 ½”
42
2½”
75
3”
48
Ex d I Mb, Ex d IIC Gb and Ex tb IIIC Db IP66Variation 0.1To allow the stopping plugs to be manufactured in aluminium; in this form the stopping plugs are markedEx d IIC Gb Ex tb IIIC Db IP66
ExTR: GB/BAS/11.0287/00
