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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
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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-16C | A21H-16C | A21H-40 | A21H-64 | A21Y-100 | A21H-160 | A21W-16P | A21W-40P |
| A21F-40P | A21W-64P | A21W-100P | A21W-160P | KA21Y-16C | KA21Y-16P | A21Y-16R | A21Y-40R |
| A21Y-64R | A21Y-100R | A21Y-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 A21W-40P | 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
| 15 | 10 | 15 | 25 | M39×1.5 | G1" | 44 | 50 | 100 | 66 |
| 20 | 10 | 20 | 31 | M39×1.5 | G1" | 44 | 50 | 100 | 68 | |
| 25 | 12 | 25 | 31 | M39×1.5 | G1" | 44 | 50 | 100 | 105 | |
A21W-160 /160P
| 15 | 8 | 20 | / | M24×2 | G1" | 44 | 52 | 100 | 261 |
| 20 | 8 | 25 | / | M33×2 | G1" | 44 | 52 | 100 | 261 | |
| 25 | 8 | 28 | / | M36×2 | G1" | 44 | 52 | 100 | 285 | |
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