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P11X copper external thread exhaust valve is a compact automatic exhaust valve with a brass valve body and external thread interface, designed specifically for discharging free air in liquid pipeline systems. It automatically controls the opening and closing of a single exhaust port through the lifting and lowering of an internal floating ball, with a simple structure and sensitive response. Copper material provides excellent corrosion resistance and thermal conductivity, and the external thread connection makes installation and disassembly extremely convenient. It is an economical and practical accessory for local exhaust and prevention of gas blockage on small-diameter pipelines or equipment. Widely used at the top of heating radiators (radiators), small solar collection systems, electric water heaters, wall mounted boilers, circulation pump outlets, and the highest point of small-diameter pipelines or equipment such as air conditioning chilled water pipelines in homes and commercial buildings. Mainly used for automatically discharging accumulated air, ensuring smooth circulation and stable heat exchange efficiency in small water systems.

P11X Copper External Thread Exhaust Valve Product Drawing
Features:
1. Brass valve body is corrosion-resistant
The valve body is made of brass casting, which has good resistance to corrosion and chloride ion erosion, and is not easy to rust. It is suitable for domestic hot water, cold water, and some neutral chemical media.
2. Convenient external thread connection
The interface is a standard external thread (usually G1/2 ", G3/4" or NPT thread), which can be directly screwed into the reserved interface of pipelines or equipment, and can be installed flexibly without the need for additional flanges or connectors.
3. Automatic floating ball exhaust
Built in hollow copper or stainless steel floating ball, using buoyancy principle to automatically open and close the exhaust port. When there is gas in the pipeline, the float ball descends and opens the exhaust. After filling with water, it rises and closes, achieving fully automatic operation.
4. Compact structure and reliable sealing
The overall design is compact and lightweight, occupying minimal space. The exhaust port seal is usually made of heat-resistant rubber (such as NBR) to ensure tightness when closed and prevent liquid leakage.
5. Economical, practical, and easy to maintain
Low cost, it is a cost-effective solution to solve local gas blockage problems. If maintenance is required, the valve cap can be easily unscrewed for internal cleaning or replacement of floating balls and seals.

P11X Copper External Thread Exhaust Valve Structure Diagram
Parts diagram
| 部位名称 Part Name | 常用材料 Material |
| 阀体 Valve Body | 黄铜 H59/H62 Brass H59/H62 |
| 阀盖 Bonnet | 黄铜 H59/H62 Brass H59/H62 |
| 浮球 Float Ball | 不锈钢 304 / 工程塑料 Stainless Steel 304 / Engineering Plastic |
| 阀芯 Valve Core | 黄铜 / 不锈钢 304 Brass / Stainless Steel 304 |
| 阀杆 Valve Stem | 不锈钢 201/304 Stainless Steel 201/304 |
| 密封垫 Gasket | 丁腈橡胶 NBR / 硅胶 NBR / Silicone |
| 弹簧 Spring | 不锈钢 304 Stainless Steel 304 |
| 排气嘴 Air Vent Nozzle | 黄铜 Brass |
| 外螺纹接头 Male Thread Connector | 黄铜 Brass |
| 密封圈 Seal Ring | 丁腈橡胶 NBR / 三元乙丙橡胶 NBR / EPDM |
| 锁紧螺母 Lock Nut | 黄铜 Brass |
| 防尘帽 Dust Cap | 塑料 / 黄铜 Plastic / Brass |
Performance Specification Sheet
| 公称通径:DN8-DN25 Nominal diameter: DN8-DN25 | 公称压力:1.6MPa Nominal pressure: 1.6MPa |
| 适用介质:水 Applicable medium: water | 适用温度:80℃ Applicable temperature: 80 ℃ |
| 阀体材质:黄铜 Body material: Brass | 连接方式:外螺纹连接 Connection mode: external thread connection |

Outline drawing of QB2 automatic double-port exhaust valve
Outline dimension table
DN | SIZE | L | H |
| 8 | 1/4" | 46.5 | 57 |
| 15 | 1/2" | 46.5 | 55.6 |
| 20 | 3/4" | 54 | 60 |
| 25 | 1" | 54 | 60 |

Model:
SCAR-10/SCAR-16/SCAR-10Q/SCAR-16Q/SCAR-25Q/SCAR-10P/SCAR-16P/SCAR-25PSpecification:
DN15-DN250Pressure:
PN10-PN25Material:
Nylon
Model:
QB1-10/QB1-16/QB1-25/QB1-10Q/QB1-16Q/QB1-25Q/QB1-10P/QB1-16P/QB1-25PSpecification:
DN15-DN25Pressure:
PN10-PN25Material:
water or media similar to water
Model:
QB2-10/QB2-16/QB2-25/QB2-10Q/QB2-16Q/QB2-25Q/QB2-10P/QB2-16P/QB2-25PSpecification:
DN40-DN200Pressure:
PN10-PN25Material:
cast iron, ductile iron