3/8 in. Stainless Steel Y Spring Check Valve
3/8 in. Stainless Steel Y Spring Check Valve
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The 3/8 in. Stainless Steel Y Spring Check Valve (#949482) is a compact barrel-style spring check valve with a 316 stainless steel body engineered for chemical metering pump outlet service. The straight-through barrel profile minimizes pressure drop while the stainless construction resists the corrosive chemicals, acids, and oxidizers common in water treatment and industrial dosing applications.
Technical Specifications
| Specification | Value |
|---|---|
| Body Material | 304 Stainless Steel |
| Spring Material | Stainless Steel |
| Check Type | Barrel spring (inline) |
| End Connections | Female NPT / Male NPT |
| Temperature Range | −20°F to 400°F (−29°C to 204°C) |
| Part Number | 949482 |
Key Features
- 304 Stainless Steel body — corrosion resistant across wide chemical and temperature range
- Barrel spring (inline) design
- Spring-loaded — closes automatically on flow reversal
- Stainless spring internals — compatible with aggressive media
- Compact body for tight installation spaces
- Fits directly onto chemical metering pump outlet ports
Common Applications
Standard at chemical metering pump discharge ports and injection check positions. The compact barrel form fits directly on pump outlet fittings with minimal piping. 316 SS body handles sodium hypochlorite (bleach), sulfuric acid, hydrochloric acid, and other aggressive water treatment chemicals that would attack brass or aluminum.
Technical Resources
- Check Valve Types: Swing, Spring, Wafer, Ball — Compare check valve styles
- Brass vs. Stainless vs. PVC — When to choose stainless
- Shop Stainless Check Valves — Full SS check valve range
Expert Guides for This Product
- Check Valve Orientation & Installation — flow direction and mounting rules
- Check Valve Sizing Guide — why line size isn't valve size
- Slamming & Water Hammer — causes and fixes
- Check Valve Leaking? — diagnose and fix it
- Check Valve Chattering — the sizing problem nobody checks
- Buna vs. Viton Seats — which elastomer fits your media