進口燃氣截止閥，液化氣，天然氣專用截至閥增加了一個上密封.在閥門開啟狀態時,與填料一起兩層密封作用,并對填料有一定的保護作用 ，并可帶壓更換復合軟成形填料 RETZ An upper seal is added to the special stop valve for liquefied gas and fuel gas When the valve is open, it has a two-layer sealing effect with the packing, and has a certain protective effect on the packing, and can replace the composite soft forming packing under pressure

采用 PTFE制品作密封面,填料為復合軟成形填料（PTFE+丁晴橡膠+彈簧）,上密封也為軟材質,密封性能較好 PTFE products are used as the sealing surface. The filler is a composite soft shaped filler (PTFE+NBR+spring). The upper seal is also made of soft material, with good sealing performance

技術要求Applicable Standards

1.設計標準 Design Rating∶KS B20811，JIS B2071，GB/T12235-89；

2.結構長度Face to Face∶KS B2361，JIS B2002、GB12221-89；

3.法蘭標準Flanged Ends∶JIS B2212、B2214、HG/T-20592-2009；

4.檢查和試驗 Inspection & Testing∶KS B2361，JIS B2003.

進口燃氣截止閥，液化氣，天然氣專用截至閥特點說明

1.開關輕松，密封性能好 Easy switching and good sealing performance

2.閥桿填料自動密封：填料采用（PTFE+丁晴橡膠）復合軟成形填料，下增加彈簧自動補償，利用管道壓力產生自動密封， 密封填料磨損彈簧自動補償 retz品牌 Automatic sealing of valve stem packing: (PTFE+Buna-N rubber) composite soft shaped packing is used as the packing, and the lower spring is added for automatic compensation. The pipe pressure is used to generate automatic sealing, and the worn spring of the sealing packing is automatically compensated

3.密封填料損壞—帶壓更換填料。（手輪逆時針方向轉到頂點，上密封產生密封，拿下手輪，松開填料室，拿下填料室，更換復合軟成形填料（PTFE+丁晴橡膠+彈簧）The sealing packing is damaged - replace the packing under pressure. (Turn the hand wheel counterclockwise to the top, and the upper seal will produce a seal. Take off the hand wheel, loosen the packing chamber, take down the packing chamber, and replace the composite soft shaped packing (PTFE+NBR+spring)

4.閥桿耐磨功能：填料室增加 PTFE，使閥桿不會和填料室摩擦，增強閥桿使用壽命 Wear resistance function of valve rod: PTFE is added to the packing chamber to prevent the valve rod from rubbing with the packing chamber and enhance the service life of the valve rod

5.開啟時將閥桿提到最高點,令填料與上密封同時起密封作用. 關閉時關閉力不要過大,以免破壞密封面 When opening, lift the valve rod to the highest point, so that the packing and upper seal play a sealing role at the same time The closing force shall not be too large to avoid damaging the sealing surface

6.密封材料特點說明：耐溫（-196~120℃），耐腐∶耐強酸強堿、水和各種有機溶劑。無毒害/不粘附/高潤滑/耐氣候機械性質較軟，有“塑料王”之稱 Characteristics of sealing materials: temperature resistance (- 196~120 ℃), corrosion resistance: resistance to strong acids and alkalis, water and various organic solvents. No poison/no adhesion/high lubrication/weather resistance Mechanical property is soft, so it is called "the king of plastics"

主要零部件材料 Main parts and materials

可能發生的故障及其解決方案 Possible faults and solutions

故障現象	圖象	原因	消除方法
閥蓋連接處泄漏		1、螺栓未擰緊或松緊不均勻； 2、法蘭密封有損傷或夾有污物； 3、墊片失效	1、均勻擰緊螺栓； 2、修整密封面或清除污物； 3、更換墊片。
填料處泄漏		1、填料未壓緊； 2、填料失效。	1、將填料壓蓋均勻壓緊； 2、更換復合軟成形填料檢修。
密封面泄漏		1、密封面間夾有污物； 2、密封面有損傷。	1、清除干凈； 2、修整填料體密封面或更換PTFE密封墊。
閥桿轉動不靈活		1、丁晴橡膠+彈簧損壞 2、閥桿與閥桿螺母的螺紋有損傷或積有污物。	1、更換丁晴橡膠+彈簧/PTFE填料。2、拆開修整或清除污物。