概述 三通球閥系列對介質流向的不同切換要求可分為Q44L型與Q45T型， 如圖A．L型可實現對介質流向進行切換，亦可使相互垂直的兩個通道連通或關閉。 如圖B．T型可實現對介質的分流或混流，不僅可以實現介質流向的切換， 也可使三個通道互相連通，還可以關閉任一通道，連通另外兩個通道。 本閥門具有結構緊湊．造形美觀．密封性能好等特點。 Summary According to different switching requirements to the flow direction of medium, three-way ball valve series can be divi-ded into two types:Q44L ａnd Q457. As shown in Fig. A, L-type cannot oniy switch the flow direction of medium but o-nly connect or close two orthogonal pipes. As shown in Fig.B, T type cannot only switch the flow direction of medium, bu-t also connect three pipes with each other, or close any one of three ways and connect the other two pipes. This valve ha-s such advantages as compact structu re, beautiful outline, a-nd good sealing performance, etc 三通球閥介質流向示意圖 Sketch of Medium Flow-direction of Three-way BallValve 三通球閥用于分流或匯臺流通，是具有=面或四面閥座的多通口球蠲．任一通口可用作入 口而無泄漏。三通既可制成L型通口也可制成T型通口。 Three-way ball valve is used for diffluence or confHlue.t circulalio. With two-sid. or four-sida valve base embodying multiple channels All the channals can be used as e.t,ance. with no leakage The three-way can be made to L-shaped channel or T-shaped channel 主要性能規范 Main Specifications 試驗壓力（MPa） Testpressure 公稱壓力PN Nonial pressure（MPa） 1.6 2.5 殼體強度試驗 Shellstrength test 2.4 3.75 密封試驗（液） Seal test 1.76 2.75
| | 主要零件材料Material of Main Parts
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主要外形及連接法蘭尺寸Q61（4、5）（F、N、P）-16~64 Mani Outline and Connecting Flange Size
| 通徑 Nominal size |
| 執行器型號* Actuator Model | |||||||||
| DN | in | d | G | L | L0 | L1 | L2 | H | S | ||
| 15 | 1/2 | 10 |
| 68 | 34 | 140/178 | 62/75 | 130/136 | 26 | GTD52/GTE65 | |
| 20 | 3/4 | 15 |
| 78 | 39 | 140/178 | 62/75 | 135/141 | 32 | GTD52/GTE65 | |
| 25 | 1 | 20 |
| 86 | 43 | 140/214 | 62/91 | 139/173 | 38 | GTD52/GTE80 | |
| 32 | 11/4 | 25 |
| 111 | 55.5 | 164/214 | 75/91 | 158/186 | 49 | GTD65/GTE80 | |
| 40 | 11/2 | 32 |
| 126 | 63 | 164/246 | 75/101 | 165/203 | 56 | GTD65/GTE90 | |
| 50 | 2 | 38 |
| 143 | 71.5 | 190/295 | 91/112 | 202/228 | 70 | GTD800/GTE100 | |
| 65 | 21/2 |
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| 80 | 3 |
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※注：系列球閥結構長度及連接法蘭尺寸可根據用戶要求設計制造。
※注：數據×××，×××分別是氣動執行器雙作用式，單作用式I彈簧復位）。
※注：*根據不同閥門扭矩、使用介質適配的執行器型號可能有所不同．相關尺寸隨之變化。
Note：The structUfal length and connecting flange size of ball valve series can be designed and manufactured as per users’requirements.
Note：Data×××,×××represent respectively the double-acting/single-acting type(spring reposition)of pneumatic actuator
Note：*The relative sizes afe subject tO change responding to the difference in valve torque,medium and actuator model.
