900X Pressure Relief / Pressure Sustaining & Shut Off Valve for Fire Protectionis used in the living and fire-fighting emergent water supply system. It supplies living water in the normal conditions. And in case of a fire, close automatically the living water and open the fire-fighting one to make it enough, and when the fire-fighting water stops and the pressure is reduced, resets the living water automatically. Thus making the system no need to set a separate fire-fighting water supply pipeline, this saves both engineering construction cost and daily water quantity used greatly. It features by the sensitive control, safety, reliability, simple debugging and long duration. This is a kind of valve used to balance the differential pressure in air conditioner system. This kind of valve improves the systems using percentage and maintaining precise and stable differential pressure and at most degree low eliminate noise in the system and damage to the system due to over pressure differential. This valves most advantage is that its without actuator, compared to with other balance valve, and it can balance the system by mediums own differential pressure and thus saves energy and installation space. Note: Either elastic seat ring sealed gate valve or butterfly valve can be selected in the schematic of installation. Recommend to select the butterfly valve in case of DN350. Three Segment Ring Pattern,Ringed Yellow Lacquer Coil Nail,Full Ring Yellow Lacquer Mesh Hat,Three-Grade Thread Steel Nail Hebei Xinduan Hardware Manufacturing Co. , Ltd. , https://www.xinduanhardware.com
Overview
Performance
Nominal Pressure
(MPa)Shell Test
(MPa)Sealing Test
(MPa)Fluids
Fluids Temp
(°C)
1.0
1.5
1.1
Water
0-80
1.6
2.4
1.76
2.5
3.75
2.75
Dimensions
Â
DNmm
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
L
180
180
180
203
203
235
280
360
400
455
585
650
800
860
915
980
1075
1230
1300
1450
PN10
D
105
115
135
145
160
180
195
215
245
280
335
390
440
500
565
615
670
780
895
1010
D1
75
85
100
110
125
145
160
180
210
240
295
350
400
460
515
565
620
725
840
950
PN16
D
105
115
135
145
160
180
195
215
245
280
335
405
460
520
580
640
705
840
910
1020
D1
75
85
100
110
125
145
160
180
210
240
295
355
410
470
525
585
650
770
840
950
PN25
D
105
110
135
145
160
180
195
230
270
300
360
425
485
550
610
660
730
840
955
1070
D1
75
85
100
110
125
145
160
190
220
250
310
370
430
490
550
600
660
770
875
990
H
342
342
342
395
395
405
430
510
560
585
675
730
760
840
910
1070
1135
1270
1460
1640
H1
247
247
247
278
278
298
313
350
365
420
450
470
490
526
570
610
665
725
865
975
Installation
Our company introduction:
Shanghai Qingjiang Valve Manufacturing Co, . Ltd. Is located in Shanghai Fengxian Industrial Zone, is a commitment to scientific research, production, sales of professional valve manufacturer.Â
Company to an international metropolis -- Shanghai as the basis, make full use of regional advantages and industry, is committed to the introduction of international advanced management experience and technological innovation, and actively promote the enterprise comprehensive strength, and expand market share, formed with the gate valve, globe valve, ball valve, check valve, butterfly valve, hydraulic control valve, balance valve, relief valve, regulating valve and so on more than 60 series nearly 1000 varieties of products structure. Products nominal diameter is 1/4"-80" (DN6-2600mm) pressure 0.1MPa - 32.0MPa, temperature -196-595º C. Valve of the main materials are cast iron, ductile iron, carbon steel, alloy steel, stainless steel, copper and other materials, and according to the special needs of customers and manufacture of metal products. Widely used in construction, municipal, water supply and drainage, HVAC, fire, electricity, metallurgical, petrochemical, gas and other industries, and exported to the Middle East. Europe and the United States and Southeast Asia and other countries and regions. High quality wins the customer the consistent high praise and trust.Â
Â