Product Description
Vacuum Negative-Pressure Safety Valve (TFA72W-10R) Tive pressure system with temperature 200. When the netative pressure in the container exceeds the allowable value, the valve will open automatically and absorbs air When the netative pressure in the container reaches the allowable value, the valve will close automatically so as to protect the equipment and the system. It is to be installed in normal non-negative pressure systems. When the discharge valve of the container and system has not opened, which produces the negative pressure, this valve will open TFA72W is applicable in nega-automatically.
| NO. |
Name of part |
TFA72W-P Materials |
TFA72W-R Materials |
| 1 |
Body |
ZG1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti |
| 2 |
Seat |
1Cr18Ni9Ti |
ZG1Cr18Ni12Mo2Ti |
| 3 |
Adjusting ring |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
| 4 |
Bonnet |
ZG1Cr18Ni9Ti |
1Cr18Ni9Ti |
| 5 |
Stem |
1Cr18Ni9Ti |
1Cr18Ni12Mo2Ti |
| 6 |
Spring |
50CrVA |
50CrVA Coated Teflon |
| Explanation of materials for main parts |
Nominal diameter
DN(mm) |
Dimensions |
| D |
D 1 |
D 2 |
Z- d |
b |
f 1 |
H |
| 15 |
95 |
65 |
45 |
4-14 |
14 |
2 |
110 |
| 20 |
105 |
75 |
55 |
4-14 |
16 |
2 |
130 |
| 25 |
115 |
85 |
65 |
4-14 |
16 |
2 |
150 |
| 32 |
140 |
100 |
78 |
4-18 |
18 |
2 |
180 |
| 40 |
150 |
110 |
85 |
4-18 |
18 |
3 |
200 |
| 50 |
165 |
125 |
100 |
4-18 |
20 |
3 |
221 |
| 80 |
200 |
160 |
135 |
4-18 |
22 |
3 |
245 |
| 100 |
220 |
180 |
155 |
8-18 |
22 |
3 |
253 |
| 125 |
250 |
210 |
185 |
8-18 |
24 |
3 |
280 |
| 150 |
285 |
240 |
210 |
8-23 |
24 |
3 |
329 |
| 200 |
340 |
295 |
265 |
8-23 |
26 |
3 |
377 |
| 250 |
395 |
350 |
320 |
12-23 |
28 |
3 |
440 |
Pre-sale service
1.We have full stock and can deliver within short time.
2.OEM and ODM order are accepted, Any kind of logo printing or design are available.
3.Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you.
4.All of our products are produced by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.
After you choose:
1. We will count cheapest shipping cost and make invoice to you at once.
2. Check quality again, then send out to you at 1-2 working day after your payment
3. Email you the tracking no., and help to chase the parcels until it arrive you.
After-sale service
1.We are very glad that customers give us some suggestion for price and products.
2.If you have any question,please contact us freely by E-mail or Telephone.
