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Name: Orbit plug valve manufacturer China

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Orbit plug valve manufacturer China


The Orbit plug valve also named general plug valve, used to cut the connection of pipelines medium that is used in various industries 

such as petroleum, chemical industry, chemical fertilizer, power industry etc under nominal pressure of CLASS150-900LBS 

and working temperature of -29-180 °C




Operation principle of general valve

When orbit plug valve is fully opened, the channel of plug is in alignment with the channel of valve body, 

which can ensure ideal and lowest decrease on pressure.

When the hand wheel is turned, the plug will rotate toward the closing direction and at the same time draft the rotation of valve disc by 90 degree,

when the hand wheel is turned further on,the plug will be pressed down,and make the valve disc open to two sides,

so that the valve disc will be in firm contact with the valve seat and close the valve.

When the hand wheel is turned inversely, first of all the plug will move upward,and the valve disc and valve seat will be separated;

if the hand wheel is turned further on, till the valve disc is turned by 90 degree driven by the plug and finally the channel of plug will be in alignment 

with the channel of valve body, so that the valve is fully opened.



The advantage of this type of valve is that, during the opening and closing of valve, the valve disc and valve seat is separated and there is no friction 

and thus sealing face has no abrasion in the process; at the same time, soft seal is applied for sealing, so that there will be no leakage in the process of closing.


Technical Specification

Structural information      BB-BG
Driving manner             Handwheel, bevel gear, electric-actuated
Design standard            AP1599, API6D
Face to face                  ASME B16.10
Flange end                   ASME B16.5
Test&inspection            AP1598, API6D
Note: the size of serial valve connecting flange can be designed according to customers’ requirement.


NO.   Part name                           Material
1       Bottom                       ASTM A216-WCB, ASTM A351-CF8,CF8M,CF3,CF3M
2       Oring                          Butyl rubber NBR, PTFE
3      Sealing ring                  Fluorine rubber Viton, PTFE
4        Plug                           ASTM A216 WCB+N, ASTM A351-CF8, CF8M, CF3, CF3M
5         Body                         ASTM A216-WCB, ASTM A351-CF8, CF8M, CF3, CF3M
6         Bolt                           ASTM A193-B7, A320-B8, A193-B8M
7         Nut                            ASTM A194-2H, A194-8, A194-8M
8         Cover                         ASTM A216-WCB, ASTM A351-CF8, CF8M, CF3, CF3M
9         Packing                       Flexible graphite+stainless steel, PTFE
10        Gland                        ASTM A216-WCB, ASTM A351-CF8, CF8M, CF8M, CF3, CF3M
11       Handwheel                  ASTM A536 Gr.60-40-18, A216-WCB
12        Yoke nut                    Copper alloy ZQA19-4
13        Yoke nut                   bushing ASTM A216-WCB, ASTM A351-CF8, CF8M, CF3, CF3M
14        Yoke                        ASTM A216-WCB, ASTM A351-CF8, CF8M, CF3, CF3M
15        Stem                        ASTM A 182-Gr.F6a, ASTM A 182-F22, ASTM A351-CF8, CF8M, CF3, CF3M
16        Guiding stud            ASTM A 182-Gr.F6a, ASTM A 182-F22, ASTM A351-CF8, CF8M, CF3, CF3M
17           Pin                        ASTM A 182-Gr.F6a, ASTM A 182-F22, ASTM A351-CF8, CF8M, CF3, CF3M

18          Disc                        ASTM A 182-Gr.F6a, ASTM A 182-F22, ASTM A351-CF8, CF8M, CF3, CF3M


For the material of the orbit plug valve, we can supply the material with customer's requirement.



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