![Lakewood Instruments 1168601 PL575, 3/4" sample/cycle plumbing assembly Lakewood Instruments 1168601 PL575, 3/4" sample/cycle plumbing assembly](https://cdn11.bigcommerce.com/s-xxofluljba/images/stencil/448x448/products/73249/79077/1168601__86803__21726.1724742064.jpg?c=1)
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The PL5 1/2 inch cycle sample plumbing is used as a cycle sample method in boilers. The orifice restricts flow near the boiler sensor to prevent steam flashing during a sample. The PL6 can also be used as a PL5.