losconsoladores alexa tomas sicilia spanish brunette hardcore fourway sex on camera

Your current location: Wenzhou TONGHENG Valve Co., Ltd -> News Center -> Valve knowledge ->Browse articles
Valve knowledge

Check valve types and corresponding pictures there are several types of check valve

Label: check valve, type, corresponding, picture, several, model added time: May 25, 2021 click 1274 second


Check valve Is commonly used Stainless steel valve One of them refers to the active opening and closing of the valve disc by relying on the flow of the medium itself Henan personnel examination website Stainless steel valve to prevent backflow of medium Foshan environmental protection oil wholesale It is divided into many types, and different check valves have different functions. Check valve refers to the active opening and closing of the valve disc by relying on the flow of the medium itself Beijing Personnel Examination Net home, used to prevent the flow back of the stainless steel valve, also known as check valve, one-way valve, reverse flow valve and back pressure valve. Check valve is a kind of active stainless steel valve. Its important role is to prevent the reverse flow of medium, reverse rotation of pump and drive motor, and discharge of container medium.


Type of check valve:

1. Lift check valve

2. Swing check valve The valve disc is disc-shaped and rotates around the rotating shaft of the valve seat channel. Because the flow inside the valve is linear, the flow resistance is smaller than that of the lift check valve. It is suitable for large caliber occasions with low flow velocity and irregular flow change Website optimization However, it is not suitable for pulsating flow and its sealing performance is not as good as that of lifting type. Swing check valve is divided into single valve type, double valve type and most half type. The three situations are classified according to the diameter of stainless steel valve. The purpose is to prevent the medium from weakening the hydraulic impact when the flow is stopped or reversed.

3. Compression check valve: This stainless steel valve is used as boiler feed water and steam cut-off valve, it has lifting check valve and Globe valve Or angle valve comprehensive function. 4. Butterfly check valve 5. Pipe type Check valve: Stainless steel valve with disc sliding along the middle line of the valve body. Pipeline check valve is a new type of stainless steel valve. It is small in size, light in weight and good in processing technology. It is one of the development directions of check valve. But the fluid resistance coefficient is slightly larger than the swing check valve.


Check valve model compilation style (such as h41h-16c in order): additional models of check valve: HH (micro resistance slow closing check valve), BH (heat preservation check valve), HQ (rolling ball check valve). 1. Check valve type: H stands for check valve. 2. Check valve connection: 4 for flange, 6 for welding, 7 for clamp. 3. Check valve situation: 1 represents lifting type, 2 represents vertical type, 4 represents swing type, 6 represents double valve type, and 8 represents butterfly type. 4. Check valve seal: B (Babbitt), f (fluoroplastic), H (stainless steel), m (Monel), X (rubber), y (cemented carbide), w (direct processing). 5. Check valve pressure: 16 (pressure: 16KG), pn1.6-2.5mpa, grade 150lb-2500lb, daily standard 5k-63k. 6. Check valve material: q-ductile iron, c-carbon steel, p-304, r-316, a-titanium alloy, i-chromium molybdenum steel


Several common types of check valve: check valve lift type: h71x, h71h; Double disc check valve: h76x, h76x; Wafer type check valve: H74H, h74i, h74m; Silent check valve: h42h, h42w; Micro resistance slow closing check valve: hh44h, hh46h, hh49h; Rubber disc check valve: hc44x; Silencing check valve: hc41h, hc41x, hc41t; Lifting check valve: h41h, H41W; Slide ball type check valve: hq41x; Welded check valves: h61y, h62y, h64y.


Picture of check valve produced by Tongheng stainless steel valve Science Co., Ltd


  •  Check valve types and corresponding pictures there are several types of check valve

    Stainless steel swing check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Stainless steel lift check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Lift check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Swing check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Stainless steel internal thread swing check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Cast iron internal thread swing check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Stainless steel internal thread longitudinal check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Cast iron internal thread lift check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Lifting fluorine lined check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Cast iron lift check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Cast steel vertical check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Swing fluorine lined check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Stainless steel vertical check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Silent check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Double clip lift check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Wafer type check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Double disc swing check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Butterfly check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Butterfly type silencing check valve with micro resistance and slow closing


  • Micro resistance slow closing check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Rubber disc check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Silencing check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Slide ball check valve

  •  Check valve types and corresponding pictures there are several types of check valve

    Micro resistance ball check valve


daddy4k papa intelligent ne perd pas sa chance davoir des relations sexuelles avec ses fils nouvelle copine kinkyinlaws jasmine jae sicilia sexy british step mom hardcore lesbian sex with hot blonde letsdoeit elegant angel petite blonde gets fucked by stepdad vrallure busty ebony beauty daizy cooper plays with her sex toys in virtual reality loan4k le banquier est pret a aider une fille si elle donne quelque chose en retour