Common cylinder operation no yɛ nea mframa valve na ɛhwɛ so, bere a ɛho hia sɛ wobue mframa valve no ma ɛhwɛ cylinder intake no awiei biako so na ɛma mframa no fi adi wɔ awiei foforo no, hia a ehia sɛ wɔto mframa valve no mu no bedi mfitiase intake awiei no awiei foforo no so, enti adeyɛ biara wɔ nnyigyei a ɛma mframa no fi mu. Pneumatic valve nso yɛ spring sanba yɛ intake no awiei biako pɛ a ɛbɛma woabue valve no, closed only closed air exhaust a ɛwɔ spring no nkyɛn no na ɛyɛ asɛyɛde sɛ ɛbɛto mu. Adeyɛ a ɛwɔ saa valve yi mu no yɛ nnyigyei a ɛto so abien a ɛma mframa fi mu no mu biako.
