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Manufacturer Certificate of Origin (MCO)
Manufacturer Certificate of Origin (MCO)
Female NPSM and Female BSPP of this nominal size share the exact same thread measurements and appearance, but they are not interchangeable. NPSM is most common, but verification of MCO is recommended.
Female NPSM and Female BSPP of this nominal size share the exact same thread measurements and appearance, but they are not interchangeable. NPSM is most common, but verification of MCO is recommended.
National Pipe Straight Mechanical
National Pipe Straight Mechanical
Most Common
Most Common
NPSM will not have an O-Ring around the cone
NPSM will not have an O-Ring around the cone
British Standard Parallel Pipe
British Standard Parallel Pipe
Some female BSPP couplings have an O-Ring around the cone
Some female BSPP couplings have an O-Ring around the cone
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