Keyword: A21 Threaded Micro-opening Spring Safety Valve

Classification:

A21 Threaded Micro-opening Spring Safety Valve

Size Range: 1/2" ~ 3"
Pressure Rating: PN16 ~ PN320
Temperature Range: ≤200℃
Connection Type: Threaded
Material: Carbon Steel / Stainless Steel
Operation: Automatic
Suitable Medium: Gas, Steam, Liquid, Ammonia, Petroleum Gas, Corrosive Gases or Liquids

 

 

Key words:

Details

Our products now cover a wide range of standardized fluid control products that can be adapted to a variety of drive modes, comprising ball valves, butterfly valves, gate valves, globe valves, check valves, safety valves, rotary ball valves, plunger valves etc. Our products are widely used in water conservancy, municipal, electric power, gas, petrochemical, coal chemical, energy, environmental protection, medicine, real estate, metallurgy, mining and many other fields. 

A21 Series Models

A21F-16CA21H-16CA21H-40A21H-64A21Y-100A21H-160A21W-16PA21W-40P
A21F-40PA21W-64PA21W-100PA21W-160PKA21Y-16CKA21Y-16PA21Y-16RA21Y-40R
A21Y-64RA21Y-100RA21Y-160R     

 

 

Part Name

A21H-C/A21F/KA21Y-C 

A21W-P/A21F-P/KA21Y-P 

A21Y-R

1

Union

20

1Cr18Ni9Ti

1Cr18Ni12Mo2Ti

2

Union Nut

35

2Cr13

1Cr18Ni9Ti

3

Seat

35

1Cr18Ni9Ti

1Cr18Ni12Mo2Ti

4

Body

2Cr13

1Cr18Ni9Ti

1Cr18Ni12Mo2Ti

5

Disc

2Cr13/2Cr13+PTFE

1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE

1Cr18Ni12Mo2Ti

6

Spring Washer

2Cr13

1Cr18Ni9Ti

1Cr18Ni12Mo2Ti

7

Spring

50CrVA

50CrVA, Teflon Coated

50CrVA, Teflon Coated

8

Locking Nut

Q235-A

2Cr13

1Cr18Ni9Ti

9

Spring Guide

2Cr13

1Cr18Ni9Ti

1Cr18Ni12Mo2Ti

10

Adjusting Nut

Q235-A

2Cr13

1Cr18Ni12Mo2Ti

 

Dimensions (mm)

Type

Nominal Diameter (DN) 

do

d

D₀

M

d₁

D₁

L

L₁

≈H

KA21-16C
A21H-16C
A21H-40
A21W-16P

A21W-40P
KA21-16p

15

12

15

20

M27×1.5

G 1/2

30

35

76

66

20

16

20

25

M33×1.5

G 3/4

34

40

87

68

25

18

25

31

M39×1.5

G1

40

50

100

105

 

A21Y-64
A21Y-64P
A21Y-100
A21Y-100P

 

15101525M39×1.5G1"445010066
20102031M39×1.5G1"445010068
25122531M39×1.5G1"4450100105

 

 

A21W-160 /160P

 

 

15820/M24×2G1"4452100261
20825/M33×2G1"4452100261
25828/M36×2G1"4452100285

Related Products

Message

*Leave your contact information to get a free product quote

Send Message To Us

*Leave your contact information to get a free product quote