The Watts 994HMB fire hydrant backflow preventer meter meets or exceeds registration accuracy for the low flow rate, normal operating flow rate, and maximum continuous operation flow rate as specifically stated in AWWA Standard C701.
英
美
- 美國瓦茨994HMB消防栓防回流閥儀表滿(mǎn)足或優(yōu)于美國自來(lái)水廠(chǎng)協(xié)會(huì )（AWWA）C701標準規定的最小流量、正常工作流量和最大持續工作流量的記錄精度。
