Inline check valves, also called cartridge or poppet checks, place a spring and disc in a compact threaded or barbed body. Apex Flow Solutions stocks inline check valves from 1/8 in. up in brass, 316 stainless, and PVC, sold one at a time with no minimum. Ratings, seals, connections, and sizes vary by model; confirm the specification on the product page.
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Brass In-Line Check Valves — High Capacity
One spring-loaded design, eleven sizes, NBR or Viton seal — pick size and seal in one place.
Browse the full size rangeShop by series
316 Stainless Steel In-Line Check Valves — 800 WOG
Eight sizes from 1/4 in. to 2 in., FNPT × FNPT, PTFE seat, and 800 WOG across the series.
Browse all sizes-
1-1/2 in. Brass Inline Check Valve, Threaded -
2 in. Brass Inline Check Valve, Buna-N -
2 in. Brass Inline Check Valve, Viton -
2 in. 316 Stainless Steel Inline Check Valve -
2 in. Brass Inline Check Valve, Threaded -
2-1/2 in. Brass Inline Check Valve, Buna-N -
2-1/2 in. Brass Inline Check Valve, Viton -
3 in. Brass Inline Check Valve, Buna-N -
3 in. Brass Inline Check Valve, Viton -
4 in. Brass Inline Check Valve, Buna-N -
4 in. Brass Inline Check Valve, Viton -
1/8 in. Inline Check Valve, Vertical or Horizontal -
1/4 in. Brass Inline Check Valve, Buna-N -
3/8 in. Inline Check Valve -
1/2 in. Glue Inline Plastic Check Valve -
1/2 in. Inline Female x Female PVC Spring-Loaded Check Valve -
1/2 in. Brass Inline Check Valve, Buna-N -
1/2 in. 304 Stainless Steel Inline Check Valve -
3/4 in. Female x Female PVC Inline Spring-Loaded Check Valve -
3/4 in. Glue Inline Plastic Check Valve -
1-1/4 in. IPS Brass Inline Check Valve -
1-1/4 in. Brass Inline Check Valve, Buna-N -
1-1/4 in. Inline Female x Female PVC Spring-Loaded Check Valve -
1-1/4 in. Glue Inline Plastic Check Valve
