Menu

Connect with us

Spring safety valve, A47H-16C steam safety valve, boiler DN50 flange safety valve, TAV safety valve

A47H-16C safety valve with a wrench spring micro open type safety valve for steam and air medium temperature are less than 350 of the equipment or pipeline. As overpressure protection device. Connecting flange standard according to JB/T-94

price:USD$480.00
discount 70% in 2018-09-26 to 2018-09-28
price: USD$ 336.00
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
views:0
Search Similar or mail to saler or send message to saler

Pay with PayPal, PayPal Credit or any major credit card

Structure Brief
1, spring micro open safety valve has the advantages of simple structure, good sealing performance, accurate opening pressure, large emission capacity, small back pressure, easy adjustment and so on.
2, the nozzle type seat: the seat for a cut of the nozzle seat that reaches the speed of sound at the outlet of the steam flowing through the valve, discharge coefficient, surfacing Stellite seating, erosion abrasion resistance, long service life.
3, thermal elastic disc: disc design for thermal elastic structure, using the medium pressure tiny deformation, improve the sealing ability, overcome the safety valve setting of the pressure is near before discharge phenomenon in the medium pressure. The valve sealing surface adopts advanced laser quenching technology to improve the hardness, wear resistance and impact resistance.
4, adjust nut: by adjusting the nut, adjust the amount of spring compression, so that the valve can be very convenient and rapid access to accurate setting pressure.
5, back pressure adjustment sleeve: adjust valve back pressure auxiliary mechanism, through the back pressure adjustment sleeve adjustment, can get the appropriate back seat pressure difference. Up regulation reduces valve back pressure. When the valve is lowered, the valve back pressure is raised.
Installation instructions
1, the safety valve must be installed vertically, and preferably installed directly in the container or pipe joints. The inner diameter of the joint shall be not less than the inlet diameter of the safety valve.
2, the outlet of the safety valve must be equipped with appropriate expansion joint, to prevent the thermal expansion of the exhaust pipe, to the safety valve caused by undue thermal stress. The inner diameter of the discharge pipe should be larger than the outlet diameter of the valve, and the length should be as short as possible so as not to turn the corner. The weight of the discharge pipe and expansion joint should not be fixed on the safety valve, but should be fixed on the building. The distance between the centerline of the discharge pipe and the center line of the valve body is as short as possible. The discharge pipe shall be installed separately for each safety valve.
3, the muffler outlet should have enough area, to prevent back pressure affect the valve discharge capacity.
Material of main parts
NO
Part name
Material Science
1
valve body
WCB
2
valve seat
ZG2Cr13
3
Regulating ring
ZG2Cr13
4
Valve
2Cr13
5
Guide sleeve
2Cr13
6
Valve cover
ZG230-450
7
Spring
50CrVA
8
The stem
2Cr13
9
Wrench
ZG200-400
10
Adjusting screw
45
11
Protective cover
ZG200-400
 
Sealing surface material
'H'surfacing D507,'Y' surfacing Co base cemented carbide

Main dimensions
Model
Nominal diameter
do
D
K
g
g1
b
f
f1
Z-?d
DN’
D1
K1
g2
g’
b1
f’
f1’
Z1-?d1
L
L1
≈H
A47H-16C
20
15
105
75
/
55
16
2
/
4-14
20
105
75
55
/
16
2
/
4-14
100
85
270
25
20
115
85
/
65
16
2
/
4-14
25
115
85
65
/
16
2
/
4-14
100
85
270
32
25
140
100
/
78
18
2
/
4-18
32
140
100
78
/
18
2
/
4-18
115
100
312
40
32
150
110
/
85
18
3
/
4-18
40
150
110
85
/
18
3
/
4-18
120
110
320
50
40
165
125
/
100
20
3
/
4-18
50
165
125
100
/
20
3
/
4-18
135
120
390
65
50
185
145
/
120
20
3
/
4-18
65
185
145
120
/
20
3
/
4-18
140
130
395
80
65
200
160
/
135
20
3
/
8-18
80
200
160
135
/
20
3
/
8-18
160
135
400
100
80
220
180
/
155
22
3
/
8-18
100
220
180
155
/
22
3
/
8-18
170
160
600
125
100
250
210
/
185
22
3
/
8-18
125
250
210
185
/
22
3
/
8-18
190
190
620
150
125
285
240
/
210
24
3
/
8-23
150
285
240
210
/
24
3
/
8-23
205
195
625
200
150
340
295
/
265
26
3
/
12-23
200
340
295
265
/
26
3
/
12-23
240
230
798
250
200
405
355
/
320
30
3
/
12-26
250
405
355
320
/
30
3
/
12-26
350
320
981
300
250
460
410
/
375
30
4
/
12-26
300
460
410
375
/
30
4
/
12-26
350
320
1005