Nnyinasosɛm: Ɛyɛ adeyɛ tẽẽ ne pilot nnyinasosɛm a wɔaka abom, bere a nhyɛso nsonsonoe biara nni inlet ne outlet ntam, wɔ tumi no akyi, electromagnetic tumi tẽẽ kɔ pilot ketewa valve ne main valve closed afã horow no mu wɔ turn up, valve no bue.
Sɛ inlet ne outlet no fi nhyɛso nsonsonoe no ase a, wɔ tumi no akyi no, electromagnetic force pilot small valve no, valve titiriw no mu nhyɛso no kɔ soro, ɔdan no atifi nhyɛso no so tew, sɛnea ɛbɛyɛ a wɔde nhyɛso nsonsonoe no bedi dwuma de apia valve titiriw no akɔ soro; Sɛ ahoɔden no dum a, pilot valve no de spring force anaa medium pressure di dwuma de pia ɔfã a ɛretoto no, kɔ fam, sɛnea ɛbɛyɛ a valve no bɛto mu.
