D81X Grooved butterfly valve1
D81X Grooved butterfly valve2
D81X Grooved butterfly valve3
D81X Grooved butterfly valve4

D81X Grooved butterfly valve

Size Range: DN50-DN200

Pressure: PN16

Body Materials: Ductile iron

Seat Materials: EPDM

Disc Materials: DI+EPDM

Stem Materials: 2Cr13

Introduction

FEATURES

 

Suitable temperature:0~80℃

Application field:fire pipeline, water treatment

Product advantages

1. QT450-10 ductile iron body. Level 3 spheroidal rate. 450Mpa tensile strength. Over 10% extension rate.
2. EPDM seat is made of imported Germany Bayer brand raw materials. 50% rubber content. No leakage after 10,000 times Opening and closing test.
3、One-piece shaft design,easy to install and replace.
4.There is a circlip groove which fixed on 4.the upper end of shaft,to prevent the valve shaft from blowing out during use and improve safety;
5. The valve shaft seal adopts the combination structure of oil-free bearing and packing to realize self-sealing;
6. Before leaving the factory, each valve is tested for pressure according to national standards to ensure that it is qualified.

Parameters

Grooved butterfly valve

Parameter Information:
1. Executive standard:
Name Design and manufacture   Pressure Test  End Flange 
Reference standard GB 5135.6   GB 5135.6 GB 5135.11
2. Material of Main Parts:
Name 4-Body 6-Disc 7-Shaft
Material QT450 QT450+EPDM 2Cr13
3. Dimensions:
DN NPS (Inch) L φA φB φC
50 2'' 90 50 57 60.3
65 2  1/2'' 97 61 69 73
80 3'' 97 78 85 88.9
100 4'' 116 101 110 114.3
125 5'' 134 127 137 141.3
150 6'' 134 150 164 168.3
200 8'' 148 202 214.4 219.1
Application
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