3/8 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940351B)
3/8 in. Brass Y-Pattern Check Valve, Threaded (NPT) (940351B)
Backordered at the manufacturer — estimated ship time 2–3 weeks. Need a firm date? Email sales@apexflowsolutions.com
Flat-rate shipping, nationwide- Orders under $100: $9.95
- $100 – $499.99: $14.95
- Orders $500+: quoted — real freight for your order, not a flat guess
Volume order or crossing a competitor part number? Request a quote — usually answered the same business day.
The 3/8 in. Brass Y-Pattern Check Valve, Threaded (#940351B) is a brass Y-pattern check valve that allows flow in one direction and automatically prevents reverse flow (backflow). The angled Y-body gives low pressure drop and an inline-serviceable seat. Built for reliable, low-maintenance service.
Availability: In stock — ships in 2–3 business days.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 940351B |
| Nominal Size | 3/8 in. |
| Type | Y-Pattern Check Valve |
| Body Material | Brass |
| Connection | Threaded (NPT) |
Key Features
- Automatic backflow prevention — opens with forward flow, closes on reverse
- Y-pattern body — low pressure drop, serviceable seat
- Brass construction
- Threaded (NPT) connection
Common Applications
Water distribution and treatment, HVAC, pump discharge lines, irrigation, and general industrial flow systems requiring dependable backflow prevention.
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