O.P. Aqui. Eu encontrei sensores NPT no ebay por US $ 8 a mais que os sensores BSPP. A quantia de dinheiro para adaptar o BSPP ao NPT custaria mais.
Método 1 do sensor de BSPP:
Tee | SS304 | 1/2" x 1/2" x 1/2" NPT Female | ~$ 3.00 | Amazon
Adapter | SS304 | 1/2" NPT Male -> 1/2" BSPP Male | $11.66 | Ebay
Adapter | SS304 | 1/2" BSPP Female -> 1/4 BSPP Female | $12.20 | Ebay
Sensor | SS304 | 1/4 BSPP Male | $11.20 | Ebay
Total $38.06
Método 2 do sensor de BSPP:
Tee | SS304 | 1/2" x 1/2" x 1/2" NPT Female | ~$ 3.00 | Amazon
Adapter | SS304 | 1/2" NPT Male -> 3/8" NPT Female | $ 5.00 | Grainger
Adapter | SS304 | 3/8" NPT Male -> 1/4 BSPP Female | $15.00 | koolance.com
Sensor | SS304 | 1/4 BSPP Male | $11.20 | Ebay
Total $34.20
Sensor NPT:
Tee | SS304 | 1/2" x 1/2" x 1/2" NPT Female | ~$ 3.00 | Amazon
Adapter | SS304 | 1/2" NPT Male -> 1/8" NPT Female | $ 5.00 | Grainger
Sensor | SS304 | 1/8" NPT Male | $20.00 | Ebay
Total $28.00