Products > Gate valve > Large-diameter electric gate valve

Large-diameter electric gate valve

Product model: Z941H
Nominal diameter: DN40~1200mm
Nominal pressure: PN1.6~16.0MPa
Working temperature: ≤-29 ℃~550℃
Main material: WCB, ZGlCr5MO, ZGlCrl8Ni9Ti, ZG00Crl7Nil4M02
Applicable medium: water, oil, steam, and acids, bases, ammonia, urea, sulfur-containing natural gas
Operation: manual, gear transmission, electric, pneumatic
connection size: GB / T12221, JB79
inspection and testing: JB / T9092
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First, the main purpose of large-caliber electric valve

High and medium pressure flanged gate valve for the nominal pressure PN1.6 ~ 16.0MPa, the working temperature ≤-29℃~ 550℃ of petroleum, chemical, hydraulic, thermal power plant in various systems of pipeline, cut off or connected to the pipeline medium . Suitable media: water, oil, steam, and acid, alkali, ammonia, urea, sulfur and other natural gas. Mode of operation are: manual, gear transmission, electric, pneumatic and so on.
 

Second, large-diameter electric gate valve application specifications

Design and manufactureGB / T12234
Connector sizeStructure lengthGB / T12221
Flange sizeJB79
Inspection and testingJB / T9092
materialCarbon steelGB / T12229
stainless steelGB / T12230
SignGB / T12220
AvailabilityJB / T7928

 

Third, large-diameter electric valve structure and characteristics

1, Selection of sophisticated, in line with relevant standards at home and abroad, the overall high-quality materials. 
 2, In line with the requirements of advanced standards at home and abroad, reliable sealing, excellent performance, handsome in appearance. 
 3, Advanced and reasonable pairs of seal pair, gate and valve seat sealing surface with different hardness Stellite (Stellite) cobalt-based hardfacing welded together, reliable sealing, high hardness, wear resistance, high temperature resistance, corrosion resistance , Good scratch resistance, long life. 
 4, The stem by quenching and nitriding surface treatment, good corrosion resistance, scratch resistance and wear resistance. 
 5, The use of wedge-type flexible gate structure, setting large diameter thrust bearings, friction is small, and with a collision manually, opening and closing easily. 
 6, Can adopt all kinds of pipe flange standard and flange sealing surface to meet various engineering needs and user requirements.

 

Fourth, large-diameter electric valve parts and materials and the main purpose

BodycapValve plateSeatValve stemfillerSuitable mediaApplicable temperature (≤ ℃)
WCBWCB + D507MOD5772Crl3Flexible graphiteWater, oil, steam425
ZGlCr5MOZGlCr5M0 + Stellite121Crl8Ni9 + Stellite625Cr2M01VAFlexible graphiteWater, oil, steam550
ZGlCrl8Ni9Ti1Crl7Ni21Crl8Ni9 + Stellite61Crl8Ni9TiPTFENitric acids, bases200
ZG00Crl7Nil4M02316L + Stellite12316L + Stel1ite6316LPTFEUrea, Methylammonium solution, Phosphoric acid200

 

Fifth, large-diameter electric gate valve main dimensions

Convex flange 
       RF 
       Z940H 
       Z940Y 
       Z940W 
       Z940F 
       
       Z941H 
       Z941Y 
       Z941W 
       Z941F 
       
       16C 
       16P 
       16R 
       16I
1.6MPa
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