# Auxiliary Power Unit (APU) Feed Shutoff Valve (SOV)

> The auxiliary power unit (APU) feed shutoff valve is a ball valve operated by a 28 VDC motor actuator. The valve is installed in the APU feed fuel line to prevent fuel from flowing into the APU compartment during an APU shutdown.

所属技术：航空航天

## 系列介绍

The auxiliary power unit (APU) feed shutoff valve is a ball valve comprised of an aluminum alloy body assembly and ball, polytetrafluoroethylene ball seats, and a stainless steel drive shaft. It is installed with, and is operated by, a motor actuator that is powered at a nominal 28 VDC. Together, the APU feed shutoff valve and associated motor actuator provide a reliable, commanded capability to cut-off fuel flow to the APU within a few seconds. The APU feed shutoff valve is installed in the APU feed fuel line to prevent hazardous quantities of fuel from flowing into the APU compartment. The valve installation also provides a manual override in case of an actuator failure, and a position indicating lever. A thermal relief valve is incorporated in the design that bridges between the valve outlet and a port that empties into the center tank to prevent excessive pressure build-up due thermal expansion of the fuel in the fuel line following an APU shutdown. APPLICATIONS: Commercial aircraft FEATURES AND ATTRIBUTES: Parker Aerospace's APU feed shutoff valve has a corrosion resistant, lightweight construction that weighs less than 1.2 lb. The valve shares a design and fielded service legacy of similiar reliable Parker fuel ball valves that goes back decades, and awith a guaranteed mean time between failure (MTBF) of more than 57,590 flight hours. The APU feed shutoff valve is certified for conducted current lightning strikes, and use with all standard, available aviation fuels including Jet A, Jet A-1, JP-5, JP-8, and TS-1. It can operate between 0 and 40 psig of fuel pressure in the fuel line, at fuel temperatures between -58 degrees F and +160 degrees F, and ambient operating temperatures between -67 degrees F and +185 degrees F. Its operating time to open or close, when commanded, is between 2.5 and 8.5 seconds, depending on the actuator’s input voltage from the aircraft.

## 技术参数

| 参数 | 值 | 单位 |
| --- | --- | --- |
| 重量 | 1.20 (Max) lbs |  |
| 最高流体温度 | '+160 °F |  |
| 最低流体温度 | '-58 °F |  |
| 工作温度 | '-67 to +185 ambient temperature °F |  |
| 工作压力 | 0 to 40 psig |  |
| 压降 | 0.16 psid max at 4.1 gpm with Jet A psi |  |
| 内部泄漏率 | 15 drops/min max between 5 and 35 psig |  |
| 外部泄漏率 | 0 drops/min between 0 and 80 psig |  |

## 型号入口（首批）

- [FSDAPUSOV](https://hypher.com.cn/products/model/fsdapusov-c6dd05a751eb8d08/index.md)

## 技术资料与 CAD

- [Launching Innovation - Aerospace Systems and Components](https://hypher.com.cn/library-assets/412aa541dd55d5e09d464d96c06cc1f4509ee39297d03ce9364cfb686b144d85.pdf)：document

资料来源：[原始系列资料](https://ph.parker.com/cn/zh/product-list/auxiliary-power-unit-apu-feed-shutoff-valve-sov)

价格、库存和交期请联系上海海费确认。更多型号和资料见 [完整系列页面](https://hypher.com.cn/products/aerospace/auxiliary-power-unit-apu-feed-shutoff-valve-sov)；[联系技术支持](https://hypher.com.cn/contact)