70D Series three-eccentric butterfly valve(flange type)

The company has obtained certifications such as TS equipment A1 level, CE, API 607, TR-CU, SIL3, etc.

Classification：

70 series butterfly valve

E-mail: sunny@reowocv.com

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Product Description

Outline
The 70D Series three-eccentric hard seal butterfly valve adopts the design of three-eccentric structure. There is no friction between the disc and seat within the full travel range of disc opening and closing, so that the leakage caused due to seat abrasion during seat opening and closing in rotary control valves is eliminated. The seat adopts the multi-level structure and uses the combination of metal and nonmetal materials to form the sealing face. It can work excellently under the service conditions of high temperature and low temperature. The 70D Series butterfly valve is featured by long service life and excellent sealing performance. It is suitable for control and shut-off applications of almost all gases and liquids in the industrial process control.

Actuator and auxiliary control device

Pneumatic
Electric
Pneumatic-hydraulic
Worm gear

Applications

Air separation, chemical industry, petroleum
Chemical fiber, electric power, metallurgy
Pharmacy, environmental protection

Manufacturing range

Size range: DN2" – 48"
Pressure rating: 150 – 600 LB，PN1.0 – 6.4Mpa
Connection type: wafer type, flange type

Parameters of control valves:

Trim features:three-eccentric structure, multi-level sealing seat, hard seal
Body type:straight-through type
Bonnet type:standard integral type
Flow characteristic:approximately equal percentage
Shut–off class:ASME B16.104 VI
Pipe connection type:wafer type, flange type
Applicable temperature range:−196℃ – 530℃
Actuator type:pneumatic piston actuator electric actuator

Structural drawing of 70D Series

No.	Name	Material
1	Stem	17-4PH Stainless Steel ASTM A564Gr630 Optional:316ss,inconel718/625,Monel
3	Packing	PTFE Optional:Graphite-high density/low density
4	Front bearing	316SS Backed Ptfe,hastelloy C Backed Ptfe
5	Body	Carbon Steel A216 Gr WCB Or A105 Optional:ASTM A351 CF8M Or A182 F316
8	Disc	Carbon Steel A216 Gr WCB Or A105+Surfacing SS Optional:316ss ,ASTM A351 CF8M Or A182 F316 Monel,Alloy20,Aluminum Bronze,Hastelloy C
9	Cover plate	Optional:316ss,ALLOY20
11	Limit part	17-4PH Stainless Steel ASTM A564Gr630 Optional:A182 F316/F304
14	Seal ring	Graphite+304 Optional:PTFE
15	Seat	316ss ASTM A351 CF8M Or A182 F316 Monel,Alloy20,Aluminum Bronze,Hastelloy C