1/2" NPT Lead-Free Full Port Brass Ball Valve – 600 PSI CWP (MBB-50NL)
The PneumaticPlus MBB-50NL is a professional-grade 1/2" NPT Lead-Free Full Port Brass Ball Valve engineered for reliable flow control in manual shutoff applications. Rated for 600 PSI CWP / 150 PSI WSP and featuring a blow-out proof stem, it serves as a durable isolation valve for air lines, potable water service, and compatible fluid handling systems. This model features a 0.59" full port bore (A), designed to help maintain flow and reduce restriction through the valve body.
- Bore (Full Port) design with a 0.59" internal opening helps minimize flow restriction at the point of use.
- Vacuum Service rated up to 29" Hg, making it suitable for both pressurized and vacuum-based systems.
- Forged lead-free brass body and valve cap (C46400) provide durability in demanding commercial and industrial environments.
- PTFE ball seat and packing with NBR O-ring provide a reliable seal and smooth operation across a wide temperature range.
- Blowout-proof stem ensures safer operation under pressure.
- Quarter-turn handle allows for fast shutoff with a clear visual of the open/closed position.
- Approved for potable water service and compliant with NSF/ANSI 61-8 and NSF/ANSI 372 standards.
Versatile Applications & Use Cases
The MBB-50NL is designed for reliability across a wide spectrum of industrial, commercial, utility, and potable water environments:
- Potable Water Isolation: Suitable for lead-free shutoff applications in water service lines and plumbing systems.
- Intermediate Air Line Isolation: Ideal for isolating compressor distribution lines and shop air zones.
- General Utility Service: Suitable for compatible liquids, gases, and vacuum applications within published ratings.
- Equipment Supply Shutoff: Commonly used where 1/2" NPT male x female shutoff capacity is required.
- Facility Maintenance: Allows for secure, reliable manual isolation of equipment for repair without system-wide downtime.
Technical Specifications
| Feature | Details |
|---|---|
| Manufacturer Part # | MBB-50NL |
| Thread Configuration | 1/2" NPT Male x Female (M x F) |
| Body Material | Forged Lead-Free Brass (C46400) |
| Bore (Full Port) | 0.59" (A) |
| Flow Coefficient (Cv) | 18.55 |
| Pressure Rating | 600 PSI CWP / 150 PSI WSP |
| Vacuum Rating | Up to 29" Hg |
| Temperature Range | -20°F to 365°F |
| Seats / Seals | PTFE Ball Seat and Packing; NBR O-Ring |
| Ball Material | 304 Stainless Steel |
| Compliance | UL, CSA/CUS, CE, FM, and NSF Approved; Meets NSF/ANSI 61-8, NSF/ANSI 372, IAMPO/ANSI Z1157, MSS SP-110; RoHS Compliant; Approved for Potable Water Service |
MBB-50NL Dimensional Data
| Model | NPT Size | A (In) | B (In) | C (In) | D (In) | E (In) |
|---|---|---|---|---|---|---|
| MBB-50NL | 1/2" | 0.59 | 1.37 | 2.50 | 1.81 | 3.46 |
Frequently Asked Questions
Q: Is the MBB-50NL full port or standard port?
A: Full port design with a 0.59" bore (A) to help minimize flow restriction.
Q: Is this valve approved for potable water service?
A: Yes. The MBB-NL series is approved for use in potable water service and meets NSF/ANSI 61-8 and NSF/ANSI 372 standards.
Q: Is this valve safe for use with compressed air?
A: Yes. The MBB-NL series is rated for 600 PSI CWP and includes a blow-out proof stem for safer operation under pressure.
Q: What thread sealant should I use for installation?
A: For a reliable NPT connection, we recommend using high-quality PTFE tape or a dedicated pipe thread sealant suitable for lead-free brass fittings.
Authorized Distributor
PneumaticPlus is an authorized distributor for the products listed on our website. We verify the authenticity of all components sold and provide them in factory-new condition.
