The Castair Full Flow Ball Valve BV150 is a 1-1/2" NPT female threaded ball valve for compressed air systems, designed for larger compressors and high-capacity distribution lines. At $81.31, it is the largest standard valve in the Castair BV series, sized for high-flow applications where a 1" or 1-1/4" valve would create a restriction in the system.
Where a 1-1/2" Valve Fits
A 1-1/2" NPT shutoff valve is used at the discharge of large reciprocating or rotary screw compressors, at main headers in compressed air distribution systems, or at the inlet to large air receivers and storage tanks. At 1-1/2", this valve handles the full flow of high-capacity compressors without throttling the line. The full-flow (full-port) design means the bore matches the pipe ID — you lose no pressure across the valve when it is fully open.
Technical Specifications
- SKU: BV150
- Connection Size: 1-1/2" NPT Female (both ends)
- Valve Type: Full Flow Ball Valve
- Price: $81.31
- Manufacturer: Cast Air (Castair)
- Category: Accessories — Parts
Key Features
- 1-1/2" NPT Female Connections: Largest standard NPT size in the Castair BV series — fits high-capacity compressed air system plumbing
- Full Flow Design: Full-port ball bore matches pipe inside diameter — no pressure drop across the valve when open
- Positive Shutoff: Ball valve provides definitive isolation — fully open or fully closed, no position that leaks under pressure
- High Capacity: Sized for the discharge volumes of large reciprocating and rotary compressors
Applications
- Main shutoff at discharge of large reciprocating or rotary screw compressors
- Header isolation valves in compressed air distribution systems with 1-1/2" main lines
- Shutoff before large air dryers, coalescers, or storage vessels
- Any 1-1/2" NPT compressed air application requiring a positive manual shutoff valve
BV Series — Full Range
Castair full-flow ball valves: BV25 (1/4", $11.86), BV100 (1", $40.66), BV125 (1-1/4", $57.60), BV150 (1-1/2", $81.31). Match the valve to your line size. The BV150 is the correct choice for high-flow systems — using a smaller valve on a large compressor wastes the capacity the machine produces. Call 866-217-0063 if you need help selecting the right size.
Why Buy From OEM Diagnostic Tools?
We have been supplying compressor parts and accessories to shops and industrial buyers since 2016. We stock Castair ball valves in all standard sizes and can confirm the right specification before you order. Free shipping on qualifying orders, full manufacturer warranty, and direct support at 866-217-0063.
Call 866-217-0063 for quick answers and help!



