DN700-3000mm Hydraulic Three-Lever Butterfly Valve for Metallurgical Bf

• Media: Gas
• Driving Mode: Hydraulic
• Connection Form: Flange
• Structure: Three-Eccentric Sealing
• Seal Form: Force Sealed
• Valve Stem: Normal
• Model NO.: QD740
• Work Pressure: Low Pressure (Pn<1.6mpa)
• Working Temperature: Medium Temperature (120°C<T<450°C)
• Material of Seal Surface: Metal Hard Sealed
• Valve Body: Forge Welding
• Standard: GB1221-200514
• Application: Industrial Usage, Water Industrial Usage
• Delivery Time: 30-60 Days
• Warranty: 12 Months
• Transport Package: Standard Export Package
• HS Code: 84818040
• Production Capacity: 10000 Pieces/Year

Product Description

DN700-3000mm Hydraulic Three-Lever Butterfly Valve for Metallurgical BF







QD740H(X)-6,QD940H(X)-6 Link butterfly valve


Function and Features: 
 

1. Mainly suitable for a blast furnace(BF) hot blast stove system (including a preheating furnace), used as cold blast valve, gas shut-off valve, combustion air isolating valve, chimney valve, play an important role in cutting, also can substitute gate valve.
2. Drive Mode: hydraulic transmission, electric drive.
3. Due to its own characteristics, the valve is not relatively glided between sealing pairs in the process of opening and closing, the sealing pairs are free from wear, therefore, the durability and reliability of the sealing can be guaranteed.
4. Welded structure to show the common characteristics of the butterfly valve: small in size, light in weight, convenient to maintain, etc..

Executive Standard:

1.Flange connection dimensions carry out the rules of GB/T9119-2000 PN6. Not less than 2200 mm of caliber is performed according to the provisions in DIN2501PN6.
2. Structure length refers to GB1221-200514 series.
3. Pressure test refers to specification in GB/T13927-2008.

Note: Use other standards according to customer's requirements, please mark out while placing orders.

Performance Parameter: 
 

Nominal Diameter (DN) (mm)		DN700~DN3000
Work Pressure (Mpa)		≤0.6
Test Pressure (Mpa)	Case	1.5 times of working pressure
	Seal	1.1 times of working pressure
	Grade of Seal	A or B
On/off Differential Pressure (MPa)		≤0.02
Working Temperature (ºC)		-29~+530
Type of Sealing Pair		X type(≤250 ºC) H type(≤530 ºC)
Applicable Medium		Air, gas, smoke

Model Instructions:
 

Valve Type	D	butterfly valve
Drive Mode	7/9	7-hydraulic,9-electric
Connection Form	4	Flange connection
Type of Structure	0	rod type
Material of Sealing Surface	H	H-surfacing alloy steel X-silastic
Nominal Pressure	6	0.6MPa

Drawing and Specs:





 

Introduction:
 

We also can provide other model of butterfly valve, including series as below:
 

QD747 RS -2.5 HYDRAULIC DOUBLE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD747-6 HYDRAULIC DOUBLE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD947RS-2.5 ELECTRIC DOUBLE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD747RS-6 ELECTRIC DOUBLE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD748 RS -2.5 HYDRAULIC THREE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD748 RS -6 HYDRAULIC THREE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD948 RS -2.5 ELECTRIC THREE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD948 RS -6 ELECTRIC THREE-ECCENTRIC CENTER BUTTERFLY VALVE.

QD341W-2.5 MANUAL AERATION BUTTERFLY VALVE.

QD341W-6 MANUAL AERATION BUTTERFLY VALVE.

QD741W-2.5 HYDRAULIC AERATION BUTTERFLY VALVE.

QD741W-6 HYDRAULIC AERATION BUTTERFLY VALVE.

QD941W-2.5 ELECTRIC AERATION BUTTERFLY VALVE.

QD941W-6 ELECTRIC AERATION BUTTERFLY VALVE.

QDZ941W AUTOMATIC ADJUSTMENT BUTTERFLY VALVE .

QD944W PRESSURE REGULATING VALVE GROUP .

QD944W PRESSURE REGULATING VALVE GROUP (REDUCING) .

QD949 ELECTRIC COLD BLAST SNORT VALVE .

QD949W-I ELECTRIC COLD BLAST SNORT VALVE .

QD949W-II ELECTRIC COLD BLAST SNORT VALVE .

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