316 Stainless Steel In-Line Check Valves — 800 WOG
Midland's 316 stainless steel in-line check valves in one spring-loaded design — eight sizes from 1/4 in. to 2 in., FNPT x FNPT, 800 WOG with a PTFE seat, priced and orderable by size below.
- Sizes
- 1/4 in–2 in (8 sizes)
- Connection
- FNPT
- Pressure
- 800 WOG
- Seal
- PTFE
- Cracking pressure
- 1/2 psi
- Lead-free / potable
- Not verified — confirm with manufacturer
Choose your size
Pressure ratings by size
Maximum working pressure varies by size, calculated from the current members below. Confirm the exact rating for your size and seal on the product page before ordering.
| Size range | Max working pressure |
|---|---|
| 1/4 in – 2 in | 800 WOG |
Questions buyers ask
What sizes and connections are available?
Eight sizes from 1/4 in. to 2 in., all with FNPT x FNPT threaded connections (ANSI B1.20.1). Each size is listed individually in the selector with its live price and availability.
What is the pressure rating?
Every size is rated 800 WOG (water, oil, gas, non-shock). Saturated-steam service is separately rated 125 WSP, and the working-temperature range is +10 to 450 F. These are distinct ratings, so confirm pressure and temperature suitability for the specific service conditions. Cracking (opening) pressure is 1/2 psi.
What are the valves made of?
The body, disc, center guide and end cap are investment-cast ASTM A351-CF8M — the cast form of 316 stainless steel. The spring is 316 stainless steel, and the seat and gasket are PTFE. They are made in Italy.
Are these lead-free or suitable for potable water?
No lead-free or potable-water certification has been verified for this series. Do not specify it where certified lead-free compliance is required without manufacturer confirmation. The manufacturer shows a California Proposition 65 warning (naming lead); a Proposition 65 warning is not by itself a statement of lead-free compliance either way.
What temperature and media are they rated for?
The manufacturer rates the working-temperature range at +10 to 450 F, separate from the 800 WOG and 125 WSP pressure ratings, and describes the valve as corrosion resistant and suitable for chemicals. Because pressure capability, temperature and media compatibility interact, confirm pressure and temperature suitability for the specific service conditions.
Can I order several sizes together?
Yes. Select the sizes you need in the selector and add them to the cart in one step, or use Request a quote for project quantities or mixed-size orders.
Related
Need project quantities, a mixed-size order, or a firm lead time? Request a quote and our team will follow up.