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Keyword： Spring Loaded Low Lift External Thread Type Safety Valve
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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.
A21F, A21H-C type are used for the equipment and pipeline ofthe air, ammonia, petroleum gas, etc. medium what the workingtemperature are less than 200C.A21W-P, R type are used forthe equipment and pipeline of the quality with corrode gas andliquid medium shat the working temperature are less than 200°CTake for extrapressure protection devices.
Materials For Main Parts
| NO. | Name of part | Materials | ||
| A21H-C/A21F-C A21Y-C | A21W-P/A21F-P A21Y-P | A21W-R/A21F-R A21Y-R | ||
| 1 | Union | 20 | 304 | 316 |
| 2 | Union nut | 35 | 20Cr13 | 304 |
| 3 | Seat | 35 | 304 | 316 |
| 4 | Body | 20Cr13 | 304 | 316 |
| 5 | Disc | 20Cr13/20Cr13+PTFE | 304/304+PTFE | 316 |
| 6 | Spring washer | 20Cr13 | 304 | 316 |
| 7 | Spring | 50CrVA | 50CrVA Coated Teflon | 50CrVA Coated Teflon |
| 8 | Locking nut | Q235-A | 20Cr13 | 304 |
| 9 | Spring guide | 20CM3 | 304 | 316 |
| 10 | Adjusting nut | Q235-A | 20Cr13 | 316 |
| Sealing surface of material | "Y" Depositing stelte,"H" Depositing D507,"W"body | |||
Dimensions (mm)
| Type | Nominal diameter | do | d | Do | M | d1 | D1 | L | L1 | ≈H |
| A21Y-16C A21H-25C A21H-40 A21W-16P A21W-25P A21Y-40P |
15 | 12 | 15 | 20 | M27X1.5 | G1/2" | 30 | 35 | 76 | 66 |
| 20 | 16 | 20 | 25 | M33X1.5 | G3/4" | 34 | 40 | 87 | 68 | |
| 25 | 18 | 25 | 31 | M29X1.5 | G1" | 40 | 50 | 100 | 105 | |
| A21Y-64 A21Y-64P A21Y-100 A21Y-100P |
15 | 10 | 15 | 25 | M36X2 | G1" | 44 | 50 | 100 | 66 |
| 20 | 10 | 20 | 31 | M36X2 | G1" | 44 | 50 | 100 | 68 | |
| 25 | 12 | 25 | 31 | M36X2 | G1" | 44 | 50 | 100 | 105 | |
| A21W-160/100P | 15 | 8 | 20 | / | M36X2 | G1" | 44 | 50 | 100 | 261 |
| 20 | 8 | 25 | / | M36X2 | G1" | 44 | 50 | 100 | 261 | |
| 25 | 8 | 28 | / | M36X2 | G1" | 44 | 50 | 100 | 285 |
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Address: No. 4900 Binhai 3rd Road, Longwan District, Wenzhou City, Zhejiang Province
Production Base: No.11 Xu'an Industrial Zone, Qingtian County, Lishui City
Phone: +86-577-86569666/85986466
Fax: +86-577-85888877
Email: zhu.yuqing@zgkkv.com
WhatsApp: +86-17757741891
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