DN1400 soft seal flange butterfly valve looks like

Butterfly valve is one common used industrial valve, which is used in pipelines to connect, cut off and regulate the flow rate of the mediums, like water, gas,etc. When it comes to butterfly valves, some customer or manufacturers will use the model nos to represent some specific types of butterfly valves, like D71F, D341X,etc, but still, some people have no idea what those model nos mean in butterfly valve, today we are going to introduce how to read those model nos for butterfly valves, and also we will try to list some Model nos for different types of butterfly valves for your reference. 

DN25 PN16 manual lever handle wafer butterfly valve-Belo Valve
DN25 PN16 manual lever handle wafer butterfly valve-Belo Valve
Flange butterfly valve
Flange butterfly valve
PTFE lined wafer soft seal butterfly valve
PTFE lined wafer soft seal butterfly valve

The method to make the model nos for butterfly valve: 

Here, we will us D343H-10C as an example, ①D  ②3  ③4  ④3  ⑤H  ⑥10  ⑦C

How D343H-10C eccentric metal seal butterfly valve looks like-Belo Valve
How D343H-10C eccentric metal seal butterfly valve looks like-Belo Valve

Additional code for butterfly valve: BD means thermal insulation butterfly valve; SD means telescopic butterfly valve; TLD means desulfurization butterfly valve; DKS mean fast butterfly valve; FDBD means square louver butterfly valve; 

① the code in the first place represents what kind of valves this valve belongs to: D means butterfly valve; 

② the code in this place represents the operating device: manual lever( usually omitted), 3 represents worm gear box operated, 6 means pneumatic actuated, 7 represents hydraulic operated, 9 represents electric actuated; 

③ the code in this third place means the end connection types: 4 is for flange end connect, 6 is for welded connect, 7 is for wafer type end connect; 

④ the code here is for structural design: 1 is for concentric structure, 2 is for double eccentric structure, 3 is for triple eccentric structure, 4 is for variable eccentric structure, 5 is for single eccentric structure; 

⑤ the code here is for sealing material: H is for stainless steel, X is for rubber, F is for PTFE, FX is for compound rubber, M is for Monel Alloy, Y is for hard alloy, W is for body material itself; 

 ⑥ the code here is for pressure rate: 10=PN1.0Mpa, 16=PN1.6Mpa, 25=PN2.5Mpa, 40=PN4.0Mpa, PN is the pressure rate code in China, Mpa is the unit for pressure rate; Class 150LB=1.6Mpa, 300LB=2.5-4.0Mpa, class is for the pressure rate in American Standard(API/ANSI), LB is for the pound unit in American Standard; 

⑦ the code here is for valve body material: C is for cast steel, P is for stainless steel 304, R is for stainless steel 316, AL is for special alloy steel, Z is for cast iron, Q is for ductile iron, N is for Nylon; 

Here is the list for common used model nos for butterfly valves in GB China Standard: 

PTFE lined butterfly valve: 

D71F46-concentric wafer type manual lever handle PTFE lined butterfly valve; 

D671F46-concentric wafer type pneumatic actuated PTFE lined butterfly valve; 

D971F46concentric wafer type electric actuated PTFE lined butterfly valve; 

cast steel WCB PTFE lined wafer type butterfly valve-Belo Valve
cast steel WCB PTFE lined wafer type butterfly valve-Belo Valve
Electric stainless steel PTFE lined soft seal concentric wafer butterfly valve-Belo Valve
Electric stainless steel PTFE lined soft seal concentric wafer butterfly valve-Belo Valve

Wafer type butterfly valve: 

D71F-concentric wafer manual lever handle PTFE lined butterfly valve; 

D71H-concentric wafer manual lever handle stainless steel metal seal butterfly valve; 

D71X-concentric wafer manual lever handle EPDM seated butterfly valve; 

D71Y-concentric wafer manual lever handle metal sealed butterfly valve; 

Manual lever cast iron PTFE lined butterfly valve-Belo Valve
Manual lever cast iron PTFE lined butterfly valve-Belo Valve
concentric wafer type EPDM seated butterfly valve-Belo Valve
concentric wafer type EPDM seated butterfly valve-Belo Valve

Flange type butterfly valve: 

D41F,D41H,D41X,D41W,D341F,D341H,D341X, D341W;

worm gear actuated PTFE lined soft seal flange butterfly valve-Belo Valve
worm gear actuated PTFE lined soft seal flange butterfly valve-Belo Valve
concentric EPDM lined soft seal flange butterfly valve-Belo Valve
concentric EPDM lined soft seal flange butterfly valve-Belo Valve

Square butterfly valve:

 FDBD; 

Butt welded butterfly valve: 

D363F,D363H,D363W,D963F,D963H,D963W;

Pneumatic actuated butterfly valve: 

D641F,D641H,D641W,D642F,D642H,D642W,D643F,D643H,D643W,D671F,D671H,D671W,D673F,D673H,D673W;

Pneumatic concentric wafer soft seal butterfly valve-Belo Valve
Pneumatic concentric wafer soft seal butterfly valve-Belo Valve
Pneumatic concentric flange soft seal butterfly valve-Belo Valve
Pneumatic concentric flange soft seal butterfly valve-Belo Valve

Electric actuated butterfly valve: 

D941F,D941H,D941W,D942F,D942H,D942W,D943F,D943H,D943W,D971F,D971H,D971W,D973F,D973H,D973W;

electric operated PTFE seated concentric flange butterfly valve-Belo Valve
electric operated PTFE seated concentric flange butterfly valve-Belo Valve
electric-concentric-wafer-EPDM-seated-butterfly-valve-Belo-Valve
electric-concentric-wafer-EPDM-seated-butterfly-valve-Belo-Valve

Triple eccentric butterfly valve: 

D343F,D373F,D343H,D373H,D343W,D373W;

Pneumatic actuated wafer triple eccentric butterfly valve-Belo Valve
Pneumatic actuated wafer triple eccentric butterfly valve-Belo Valve
triple eccentric flange metal seal butterfly valve-Belo Valve
triple eccentric flange metal seal butterfly valve-Belo Valve

Telescopic butterfly valve: 

SD41X,SD41H,SD341X,SD341H,SD641X,SD641H,SD941X,SD941H; 

How telescopic flange butterfly valve looks like-Belo Valve
How telescopic flange butterfly valve looks like-Belo Valve

Bidirectional sealing butterfly valve: 

DS343H,DS643H,DS943H;

Thermal insulation butterfly valve: 

BD343H,BD343W;

Hydraulic butterfly valve: 

HD7Q41X fully hydraulic controlling, HD7s41X heavy punch, YxKD743H fast, HBD7Z43H slow closing type, DX7K41H energy saving tank type. 

for more information or price about industrial butterfly valves, kindly contact us:

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