3/4 in. Brass Swing Check Valve, Threaded (NPT)
3/4 in. Brass Swing Check Valve, Threaded (NPT)
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The 3/4 in. Brass Swing Check Valve, Threaded (#940353) is a brass swing check valve that allows flow in one direction and automatically prevents reverse flow (backflow) to protect pumps and equipment. Built for reliable, low-maintenance service.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 940353 |
| Nominal Size | 3/4 in. |
| Type | Swing Check Valve |
| Body Material | Brass |
| Connection | Threaded (NPT) |
Key Features
- Automatic backflow prevention — opens with forward flow, closes on reverse
- Brass construction
- Threaded (NPT) connection
- Low-maintenance, self-operating design
Common Applications
Used to prevent reverse flow in commercial and industrial applications. Not lead-free — not for potable water service.
Technical Resources
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
Selection reference: swing check valve guide — compare materials, sizes, and installation considerations.