1/4 in. Female x Female 500 PSI Check Valve with Viton
1/4 in. Female x Female 500 PSI Check Valve with Viton
Sizes in This Series
500 PSI Female x Female brass check valves with Viton (FKM) seal. Jump to another size or add it straight to your cart:
| Size | Part # | Price | Cart |
| 1/8 | 46560V | $26.99 | Add to cart |
| 1/4 (this page) | 46561V | $31.99 | — |
Overview
Midland Industries 46561V is a 1/4 in. female x female brass check valve rated to 500 psi. It uses FIP x FIP (female NPT) connections on both ends and a spring-loaded poppet to allow flow in one direction while blocking reverse flow. This version is sealed with a Viton (FKM) elastomer for higher-temperature and chemical-resistant service.
Technical Specifications
| Manufacturer | Midland Industries |
| Part Number (MPN) | 46561V |
| Nominal Size | 1/4 in. |
| End Connections | FIP x FIP (female NPT both ends) |
| Valve Type | Spring check |
| Pressure Rating | 500 psi |
| Temperature Range | 180°F |
| Body Material | Brass |
| Seal Material | FKM / Viton |
| Lead Content | Contains lead (not certified lead-free) |
Materials of Construction
| Body Material | Brass |
| Seal Material | FKM / Viton |
Typical Applications
Used wherever backflow must be prevented downstream of pumps, compressors, and metering points in air, oil, and water lines. Install with the flow arrow pointing in the direction of intended flow; the spring closes the poppet the instant flow reverses.
Cross-Reference and Interchange
This valve cross-references to these competitor and industry part numbers: 6490290 . Replacing one of these? Match nominal size, end connections, and the rating for a direct fit, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- Check Valve Types Explained
- Valve Pressure & Temperature Ratings Chart
- How to Choose the Right Valve
- NPT Thread Tightening: Turns Past Hand Tight
- Teflon Tape vs. Pipe Dope
Frequently Asked Questions
Which way does this check valve install?
Install it so the arrow on the body points in the direction of desired flow. The spring-loaded poppet opens with forward flow and closes against reverse flow.
NBR or Viton — which seal do I need?
NBR (Buna-N) handles general air, oil, and water service. Viton (FKM) resists higher temperatures and a wider range of chemicals and fuels. Both versions of this 500 psi valve carry the same 180°F rating; choose Viton for chemical compatibility.
What is the pressure rating?
500 psi, with a maximum service temperature of 180°F.
Is this valve lead-free?
No. This brass valve contains lead and is not certified lead-free, so it is not intended for potable drinking-water systems.
California Proposition 65 Warning: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.