BS 5163-2:2004
$86.31
Valves for waterworks purposes – Stem caps for use on isolating valves and associated water control apparatus. Specification
| Published By | Publication Date | Number of Pages |
| BSI | 2004 | 12 |
Isolating valves and hydrants installed in underground pipelines primarily carrying water intended for human consumption within the United Kingdom are required to be fitted with a stem cap to enable them to be operated by a ring-key and bar or T-shaped key.
The stem cap is fitted to the top of the valve stem to convert the manufacturer’s stem configuration to mate with operating keys.
Two sizes of stem cap are specified, covering respectively, valves from DN 50 through DN 300 and DN 350 through DN 600.
NOTE Stem caps are also commonly used on other waterworks apparatus, e.g. penstocks (specified in BS 7775).
Gives details of stem caps not covered in BS EN 1074.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 4 | Foreword |
| 5 | 1 Scope 2 Normative references 3 Terms and definitions 3.1 stem cap 3.2 ring key and bar 3.3 T key |
| 6 | 3.4 mST Figure 1 – Ring key and bar |
| 7 | Figure 2 – T key 4 Design requirements 4.1 Materials 4.2 Dimensions Table 1 – Dimensions of stem caps |
| 8 | Figure 3 – Typical stem cap 4.3 Resistance of stem caps to operating loads 5 Preparing for storage and transport |
| 9 | Annex A (normative) Test method for the resistance of stem caps to operating loads A.1 General A.2 Test procedure |
