Afiri a wɔde sɔ nneɛma hwɛ ma nneɛma a wɔde hyɛ mu .
Wɔde fittings no di dwuma ma auto mfiri, mframa leakage test ne pressure maintaining test ho hia yiye. Yɛyɛɛ mfiri 5 a wɔde sɔ hwɛ de sɔ fittings no hwɛ mmiako mmiako. Sɛ nhwɛso no, MNSE a yɛsɔ hwɛ throught fã-awie nneɛma, esiane ne dwumadi a speed-regulating.