Home » Products » Valve » Butterfly Valve » 1inch GROOVED DUCTILE IRON FIRE PROTECTION BUTTERFLY VALVE


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Sales mode:Wholesale
Material:Stainless Steel/Brass/ductile iron/cast iron
Anticorrosive method:spray/As buyer's requirements
  • D83X-DN25


  • D83X-DN25

  • Butterfly Valve

  • Flangeconnection

  • DN25

  • Qingdao, China

  • 2.5MPA

  • 60000 tons/year

  • Grey/red, can be customized



Grooved end fire protection butterfly valve

Size: 1”-6”/ 33mm –168mm

Design standard: API 609, BS EN 593.

Face-to-Face dimension: API 609, DIN 3202 k1, ISO 5752, BS 5155, MSS SP-67.

Flange Drilling: ANSI B 16.1, BS4504, DIN PN 10 / PN 16.

Test: API 598.

Epoxy fusion coating.

Different lever operator.

Working Pressure 10 bar / 16 bar

Testing Pressure Shell: 1.5 times rated pressure,

Seat: 1.1 times rated pressure.

Working Temperature -10°C to 80°C (NBR) -10°C to 120°C

• 300 psi working pressure

• EPDM 200° F maximum working temperature

• NBR 180° F maximum working temperature

• 10-Position lever handle or gear operator

• Grease fitting on gear operator

• Upper and lower shafts - Stainless Steel Grade 420 ASTM A-276

• O-Rings - EPDM or NBR

• Handwheel - Ductile Iron

• Lever Handle - ASTM A-536 Ductile Iron

• Suitable for “Dead End” Service


Company profile

The company is located in a beautiful coastal city of Qingdao, Shandong Province, China. The company was established in 2015, which is not long, but our technicians have been engaged in the pipeline industry for 20 years.

The company's products will be introduced below. The company is mainly engaged in plumbing systems. Often used in coal mine face, oil, Marine ships and so on. Pipe system includes components: special process corrosion resistant steel pipe, steel pipe coupling, gate valve, pipe fittings (positive tee, elbow, diverter, accumulator, diverter, etc.).

Both steel pipes and components are connected through grooves. I know that many countries continue to use flange connections. We use the groove connection compared to the flange covers less area, the installation of bolts and nuts are reduced, the use of the groove connection can withstand greater pressure.

We mainly develop and produce remote liquid supply systems.  The longest distance project I have done is 6000 meters.  The company has a cost-saving corrosion resistant steel pipe processing technology.  The company self-made stainless steel pipe, through a series of operations to make the stainless steel pipe and the inner wall of the machine completely fit.  This can not only meet the corrosion resistance requirements of the same grade of stainless steel, but also meet the requirements of the same pressure of the steel pipe.  Greatly save costs, save raw materials.  Grooves are machined at both ends of the steel pipe, and the connection between the steel pipe and the steel pipe and the fitting is connected by a grooved coupling.



1.Safety performance: 

Groove connection mode, automatic precision casting or precision forging forming, high dimensional accuracy, excellent physical properties, safer use.

2.Weight reduction: 

The same 89 mm connector can reduce the weight by 50% compared to the flange connection.

3.Save time:

The number of bolts and nuts in the grooved steel pipe connector is reduced compared with the flange, greatly reducing the installation steps.

4.Space saving:

No flanges take up less space, and more pipes can be installed in the same space.

5.The price is good:

Products are sold directly from manufacturers to customers, reducing middlemen to earn the difference.

6.One-stop service:

About the pipeline products customers can buy all in our company, no need to look around.

TONTR is located in the beautiful coastal city of Qingdao. It is a professional national-level high-tech industry engaged in the design, development, manufacture and sales of high-pressure pipeline systems.

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