Reduce bore(RB)Trinnion mounted ball valve forged Duplex stainless steel F51 - Trunnion mounted ball valve


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Reduce bore(RB)Trinnion mounted ball valve forged Duplex stainless steel F51
  • DBV Valve manufacturer of 3 piece trunnion mounted ball valve
  • Duplex stainless steel F51 forged ball valve manufacturer in China
  • Good quality trunnion mounted ball valve manufacturer
  • Good quality trunnion mounted ball valve supplier
  • Good quality trunnion mounted ball valve manufacturer in China

Reduce bore(RB)Trinnion mounted ball valve forged Duplex stainless steel F51

  • Product description:

    Reduce bore(RB)Trinnion mounted ball valve forged Duplex stainless steel F51 Ball:F51 Seat:PEEK Bolt and nut coated with PTFE Gear box opereated

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Reduce bore(RB)Trinnion mounted ball valve forged Duplex stainless steel F51

1g Valve description

Trnnion mounted ball valve reduce bore



Nominal Pressure


Nominal Diameter:


End Sealing:


Face To Face:

ASME B16.10

Working Temperature:


Test And Inspection:

API 598MSO 5208

End Connection:



NACE 0175


ISO9001, ISO14001, ISO28001, TS, CE,TUV

PSWe also can do according to customer's requirements.

2g valve details

Ball Valve body marking


Every valve in DBV with clear Marking on the valve body.


Ball valve Bolts and nuts with PTFE Coated

Bolt and Nut                           

Bolt and nut coated with PTFE.

Duplex stainless steel ball valve manufactuer in China

    Flange face finish     

    The ASME B16.5 code requires that the flange

     face(raised face and flat face) has a specific

     roughness to ensure that this surface be compatible

     with the gasket and provide a high quality seal.

Reduce bore ball valve trunnion mounted

    Reduce Bore(RB)

    We also can produce both reduce bore and full bore

3g why dbv valve

  Outer Trunnion Ball  


        The trunnion ball is the standard deisign for ball valves, which

guarantees an easy assembling into valve, a wide surface for

washers (reducing friction and torque).The ball can only turn

around its own axe (trunnion axe) and sealing is guaranteed by

the axial movement of the seats for springs or inline pressure.The

trunnion design is suggested for medium and big dimensions and

enables to avoid high torque during opening or closing phase with

inline pressure. The critical issue for these products consists in the

poor material between the bore and the washer area it occurs an

easier deformation of the ball for high pressure and consequently leakage between seats and bal.

Inner Trunnion Ball


        This structure is suitable for small size valve or higher pressure

environment. With simple design and convenient maching, this

ball guarantees a stronger resistance of the ball than the outer,

and so less deformation in high pressure condition reducing the

risk of leakage between ball and seats. However, it's critical for

the valve assembling especially for big dimensions; limited space

for washers.

 Product Comparison  


Carbon Steel Ball ValveIndustrial Valve

 Nitriding Thicken Stem Design  

Ball Valve Stem

 Factory Direct Sales 


Quality, transportation, after-sales 

4g FQ

  Q1. Are you a factory or trading company?

  A: We are a factory specialized in manufacturing valves 20 years. We both have factory in Wenzhou and Shanghai.

  Q2. Can I have a sample order for valve?

  A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable. 

  Q3.Do you have any MOQ limit for valve order?

  A: Low MOQ, 1pc for sample checking is available

  Q4. How do you ship the goods?

  A: We usually ship by sea, by air, by courier, etc.

  Q5. How to check the process of the order?

  A: You can check your order on our website after we provide you account and password.

  Q6: Do you offer guarantee for the products?

  A: Yes, we offer 2 years warranty to our products and we could repair freely for lifelong time.

  Q7: Can you put our Logo on the valves?

  A:Yes, we can totally produce products according to your special request, even manufacture them base on your drawing.

  Q8: How can I check your factory situation while it's difficult for me to come to China?

  AWe have photos and videos on our website, youtube and facebook, It shows every step of our manufacturing.

5g Contact us
Butterfly Valve Contact

Company Profile:

DBV VALVE CO., LTD is manufacturer of valves.

more details>

Email: [email protected]  

Wenzhou Factory :No.96 Fanhua East Road,OuBei,WenZhou,Zhejiang,China,325102

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