Waalka damper; DN 3600&1800

Isticmaal xoog farsamo oo xoog leh, qalab wax soo saar oo dhammaystiran si aad u buuxiso shuruudahaaga, injineerada xirfadlayaasha ah iyo iibinta ganacsiga shisheeye ayaa ku siin doona adeegyo aad ku qanciso, THT VALVE!