2inch Worm gear operated PTFE seated wafer type DI plated butterfly valves

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
100 kg
Supply Capability:
10000 kg/month

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Technical data

Nominal diameter

DN(mm)

40-600

Nominal pressure

PN(mpa)

1.0

1.6

Test pressure(Mpa)

Shell test

1.5

2.4

Test pressure(Mpa)

Seal test

1.1

1.76

Appropriate medium

Air,water,sewage,steam,coal gas,oil

Drive modality

Handle,worm gear box, penumatic drive,electric drive

 

Material for main parts

Parts name

Material

Body

Ductile cast iron,cast steel,Alloy steel, stainless steel

Disc

Grey cast iron,ductile cast steel,cast steel,stainless steel and hoc material

Seal ring

Manifold rubber,such as EPDM, PTFE,NBR,Viton,CR

Stem

steel,ss420,ss304,ss316

Packing

O-ring,flexible graphite

 

Butterfly valve seal material choice and apporpriate tempersture

Material variety

Neoprene

Styene rubber

EPDM

PTFE

Silicon rubber

Fluorine rubber

Resistance highest temperature

82°C

93°C

150°C

232°C

250°C

 

204°C

Resistance lowest temperature

-40°C

-40°C

-40°C

-268°C

-70°C

-23°C

Suitable working temperature

≤65°C

≤80°C

≤120°C

≤200°C

≤200°C

≤180°C

 


Name

Material

Body

ductile cast iron, WCB, stainless steel

Disc

ductile cast iron, WCB stainless steel,   Al-bronze

Stem

SS420, SS431 or as request

Disc seat ring

EPDM 

Body seat ring

SS304

Retainer

SS304

Shaft bearing

Al-bronze, self-lubricating bearing

Bolt & nuts

SS304

Coating

epoxy coating, thickness: min. 250   microns, color code: RAl5015, 5017, 5010, and etc.

 


China National Building Materials Group Corporation (CNBM) was established in 1984 with approval from the State Council, and then became a Central Enterprise under direct supervision of State-owned Assets Supervision and Administration Commission of the State Council in 2003.


Upholding the philosophy of “Making Best Use of Resources to Serve Construction”, and vigorously carrying out such strategies as “technical innovation”, “internationalization of building materials”, and “building strength with talents”, CNBM is the largest comprehensive building materials industry group in China that integrates scientific research, manufacturing and logistics into one entity, and consists of four business platforms, i.e. industry, technology, complete set of equipment, and trading & logistics. As of the end of 2009, CNBM’s total assets exceeded RMB 110 billion, with 100,000 employees, and 20 companies under direct management with 100% share control or majority control, among which 6 were listed companies, including 2 overseas listed.


CNBM practices the parent-subsidiary management system, and is one of those wholly state-owned enterprises carrying out the pilot trial of Board of Directors system and innovation system. As the strategic center, decision center, resources center, and policy & culture center, our Group exercises its right as a contributor. Whereas, our sub-groups functioning as business platforms, are mandated to construct the profit center based on their core competences to enlarge brand awareness and increase market share.


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