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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
Connections: 4" NPT
7”x 16” Trade Size # 1 Size Housing
These 1" S-521G Series inline check valves with solder connections are rated for 300 WOG and are IAPMO Certified – NSF 61 / NSF 372
Normal Test Flow Limits: 1-10 GPM
PRM Polypropylene Felt Bags
RKI Instruments HS-O4 Single Gas Monitor, Hydrogen Sulfide 0-200 ppm, 73-0063 related_cenit-sch-80-pvc-4-inch-butterfly-valve-kit Connections: 4" NPTRKI Instruments HS 04, Hydrogen Sulfide (H2S) 0 200 ppm, alkaline batteries and alligator clip The 04 Series single gas monitor is designed to operate for many years with field replaceable sensors and filters. The 04 Series can be operated continuously for up to 9,000 hours on (2) AAA size alkaline batteries (depending on model). The 04 Series has 3 preset alarms that are user adjustable. Each version is also equipped with visual, audible, and
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