| 1. | Reduced pressure detector assembly backflow preventer
减压检测器组合防回流装置 |
| 2. | Double check detector assembly backflow preventor
双重检验检测器组合防回流装置 |
| 3. | Performance requirements for hose connection backflow preventers
软管连接防回流装置的性能要求 |
| 4. | Dual check valve type backflow preventers
双重止回阀型防回流装置 |
| 5. | Laboratory faucet backflow preventer
实验室旋塞防回流装置 |
| 6. | Performance requirements for backflow preventers on carbonated beverage machines
碳酸盐饮料机械上防回流装置的性能要求 |
| 7. | Performance requirements for backflow preventer with intermediate atmospheric vent
有中气压通风口的防回流装置的性能要求 |
| 8. | Performance requirements for backflow protection devices and systems in plumbing fixture fittings
泵固定件接头中防回流装置和系统的性能要求 |
| 9. | Devices to prevent pollution by backlow of potable water - hose union backflow preventer dn 15 to dn 32 - family h , type a
防饮用水回流污染的装置.软管接头防回流装置dn 15至dn 32 . a型h系列 |
| 10. | Performance requirements for reduced pressure principle backflow preventers and reduced pressure fire protection principle backflow preventers
减压法防回流装置和减压防火法防回流装置的性能要求 |
