Metric M25×1.5 Male to 3/4-14 NPT Female Thread Adapter，M25，3/4 NPT

1. Thread specifications at both ends (most critical):
External thread end (metric): M25 × 1.5 (coarse thread standard pitch 1.5mm), cylindrical metric thread, used for screwing into the M25 box opening of equipment
Internal thread end (American cone tube): 3/4 “NPT, 14 teeth/inch, 60 ° American cone tube sealing thread, suitable for North American instruments, valve groups, pressure transmitters, hydraulic fittings
Note: M metric cylindrical thread ≠ NPT cone pipe thread, relying on end face O-ring to achieve sealing, the thread itself does not perform pressure sealing
2. External dimensions (industry standard):
Total length: 26~34mm (mainstream 30mm)
Effective thread engagement length: 7mm
Hexagonal wrench position: 30mm (SW30)
Installation tightening torque: 8.5 N · m
Comes with: Buna-N O-ring made of nitrile rubber, with a tightly pressed end face that is waterproof and dustproof
3. Material, protection and environmental performance:
1. Two commonly used material versions
Ordinary industrial version: brass body+nickel plating on the surface, high cost-effectiveness
Oil and gas explosion-proof and anti-corrosion version: 316 stainless steel, supporting NACE hydrogen sulfide resistance and ATEX/IECEx explosion-proof certification (Ex d IIC Gb), used for oil drilling rigs and chemical hazardous areas
2. Protection level
Sealing grade: IP68 (completely dust-proof, short-term immersion)
Pressure bearing capacity: Static pressure resistance up to 5 bar (explosion-proof shell installation condition)
3. Temperature range
Standard NBR sealing ring: -40 ℃~+100 ℃, short-term peak temperature 120 ℃
Upgrade FKM fluororubber ring: -40 ℃~+200 ℃, oil and acid resistant