食色下载

300X slow closing check valve

You are here: Home » Products » Product Categories » Ball Valve
{-stralt-}

description

Structural features and uses of 300X slow-closing check valve

300X slow-closing check valve is composed of main valve, check valve, needle valve, ball valve, micro-filter and pressure gauge. Using hydraulic automatic operation, the main valve can get the best opening or closing speed. To prevent the occurrence of water hammer and water hammer, in order to achieve the effect of slow closing and noise reduction.
This product uses hydraulic self-control. It does not require other devices and energy. It is easy to maintain, and it can be opened and closed slowly.
This series of valve products are widely used in high-rise buildings, living areas and other water supply pipe network systems and urban water supply projects.

Working principle of 300X slow-closing check valve

When the valve feeds water from the inlet end, the water enters the main valve control room through the micro filter, needle valve, and check valve, and then drains downstream through the ball valve. Because the opening of the needle valve is smaller than the opening of the ball valve, that is, the drainage speed of the main valve control room is greater than the water inlet speed, the pressure in the control room decreases, and the inlet pressure acting on the lower end of the main valve disc opens the main valve to supply water downstream.
When the pipeline stops supplying water, if the downstream water starts to return, a part of the return water enters the main control room through the ball valve. Due to the check valve function, the return water cannot flow out of the main control room, causing the main control room to gradually increase pressure and slowly close the main valve. .

Fourth, the main technical parameters of 300X slow-closing check valve

Nominal pressure (Mpa) Shell test pressure (MPa) Sealing test pressure (MPa) Applicable medium Medium temperature (℃)
1.0 1.5 1.1 water 0-80
1.6 2.4 1.76
2.5 3.75 2.75

Five, the main parts of 300X slow-closing check valve material

Part Name Parts material
Body valve cover WCB
Valve seat Copper alloy
O-ring seal Nitrile rubber
Valve stem 2Cr13
spring 50CrVA
Needle valve Copper alloy
Ball valve Copper alloy
Float valve Copper alloy
Micro filter stainless steel

Six, 300X slow-closing check valve

Nominal diameter DN (mm) Size (mm)
L A1 A H1 H F
20 150 200 282 106 172 116
25 160 200 282 106 172 116
32 180 200 282 106 172 116
40 200 210 320 137 225 168
50 203 210 320 137 225 168
65 216 215 330 145 270 180
80 241 220 330 178 289 210
100 292 230 410 232 375 284
125 330 245 420 286 420 310
150 356 260 420 318 450 370
200 495 280 430 413 722 463
250 622 300 450 502 769 525
300 698 320 460 600 906 625
350 787 340 470 637 1480 705
400 914 360 480 677 1027 778
450 978 360 480 677 1027 778
500 978 410 780 750 1110 690
600 1230 456 888 850 1286 785

If you have any enquiry about quotation or cooperation, please feel free to email us at kvc@vip.163.com or use the following enquiry form. Our sales representative will contact you within 24 hours. Thank you for your interest in our products.

  • theme:
  • * Name:
  • *mailbox:
  • company name:
  • phone:
  • fax:
  • address:
  • product:
  • content:

Related Products

100X remote control float valve
100X remote control float valve
200X adjustable pressure reducing valve
200X adjustable pressure reducing valve
400X flow control valve
400X flow control valve