Chapter 2: Prerequisites
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8
Original instructions
Service Line Requirements
All service lines to the laboratory fume hood should be ¼ inch outside diameter,
copper (brass for natural gas), and equipped with an easily accessible shut-off
valve, should disconnection be required. Recommended operating pressure is
40 PSI, with a maximum allowable pressure of 200 PSI. Consider a pressure
regulator to reduce line pressure to 40 PSI. Please check with local codes for
other requirements.
Space Requirements
The dimensions for the different models are shown in
Appendix B: Protector
Pass-Through Dimensions
.