黄色在线观看污_成人啊好痛轻一点a级_午夜視頻在線觀看國產www_亚洲aⅴ无码牛牛影视_亚洲国产精品一区二区久久评价_激情五月综合人妻婷婷_av无码最新在线播放网址_护士爽到疯狂潮喷好爽_日韩精品综合日本欧美色_91成人午夜性A一级毛片蜜臀

Model: D671F
Nominal diameter: DN50 ~ 1200mm
Nominal pressure: 0.6 ~ 1.6MPa
Body material: ductile cast steel, cast steel, alloy steel, stainless
Temperature: -30 ~ + 70 ℃
Medium: air, water, sewage , steam, gas, oil and other
Design criteria: GB / T2238-1989
Flange size: GB / T9113.1-2000, GB / T9115.1-2000 , JB78
Length of the structure: GB / T12221-1989

Pressure test: GB / T13927-1992, JB / T9092-1999

First, pneumatic PTFE sealing butterfly valve product overview

AT pneumatic PTFE butterfly valve by the PTFE seal and stainless steel valve plate, stem composition. Pneumatic PTFE sealing butterfly valve for temperature ≤ 150 ℃, weak corrosion or cleanliness requirements of a certain conditions, in food, medicine, chemicals, petroleum, electricity, paper and other water supply and drainage, gas pipeline for regulating the role of flow and interception of the media . 
 
 AT pneumatic PTFE butterfly valve main features 
 1, a new design, reasonable, unique structure, light weight, quick opening and closing. 
 2, torque is small, easy to operate, labor-saving smart. 
 3, can be installed in any location, easy maintenance. 
 4, seals can be replaced, sealing performance and reliable two-way seal to achieve zero leakage. 
 5, sealing material aging resistance, corrosion resistance, long life and other characteristics.
 

Second, pneumatic PTFE valve main technical parameters

1, the valve body

Body form	Straight-through casting body
Nominal diameter	DN50 ~ 1200mm
Nominal pressure	PN 0.6, 1.0, 1.6 MPa
Flange standard	GB, JB, HG, ANSI, JIS
Connection Type	Clip, flange type
Gland type	Integrated
Sealed packing	V-type PTFE filler, flexible graphite filler

 2, the valve parts

Valve plate form	Vertical plate (butterfly)
Flow characteristics	Switch type: Linear; Adjustable: approximation and other white points

 3, the implementing agency

Actuator model	GT series, SR series, AT series, AW series of single-and double-acting pneumatic actuator
Supply pressure	400 ~ 700KPa
Air source interface	G1 / 4 ", G1 / 8", G3 / 8 ", G1 / 2"
Ambient temperature	-30 ~ +70 ℃
The role of form	Single-acting actuator: Off Gas formula (B) - loss of gas when the valve opening (FO); open air (K) - loss of gas when the valve closed position (FC)         double acting actuator: Off Gas formula (B ) - Leakage valve position to maintain (FL); open air (K) - loss of valve position to maintain (FL)
Can be equipped with accessories	Positioner, Solenoid valve, Air filter pressure reducer, Relief valve, Stroke switch, Valve position transmitter, Hand wheel mechanism, etc.

 Third, pneumatic PTFE butterfly valve main performance indicators

Nominal diameter	DN (mm)	50 ~ 2000
Nominal pressure	PN (MPa)	0.6	1.0	1.6
test pressure	Strength test	0.9	1.5	2.4
	Seal test	0.66	1.1	1.76
	Gas seal test	0.6	0.6	0.6
Suitable media	Air, water, sewage, steam, gas, oil and so on.
Drive form	Manual, worm gear drive, gas drive, electric drive.

 Fourth, pneumatic PTFE valve parts materials

Part Name	material
Body	Ductile cast steel, cast steel, alloy steel, stainless steel
Butterfly plate	Gray cast iron, ductile cast steel, cast steel, stainless steel and special materials
Sealing ring	PTFE, PTFE
Valve stem	2Cr13, stainless steel
filler	O-ring