| 摘要 |
<p>A fire protection sprinkler includes a body having an input end and an output end, the body having an output orifice at the output end. The sprinkler includes a frame extending from the body in the output direction and a deflector supported by the frame positioned opposite the output orifice. Also, the sprinkler includes a seal assembly which seals the output orifice. The seal assembly has a first side and a second side, the first side bearing identifying indicia associated with the orientation of the seal assembly. When the first side is oriented in the input direction, a portion of the indicia is visible from the input end, to indicate a correct assembly. However, when the first side is oriented in the output direction, none of the indicia is visible from the input end, indicating incorrect assembly.</p> |
