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Micro-resistance slow closing check valve

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

Key words:

Classification:

Ductile iron valve series

Product Consulting:

Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆ Main technical specifications

Model HH44X-10/16/25
Nominal pressure (PN) 10 16 25
Sealing test (MPa) 1.1 1.76 2.75
Shell test (MPa) 1.5 2.4 3.75
Applicable temperature (≤ ℃) 80
Applicable media Water

 

◆ Material of main parts

Part Name Material
Body/Bonnet Cast iron, ductile iron
Disc Rubber assembly
Sealing ring Rubber
valve shaft Stainless Steel

 

◆ Main outline connection dimension

DN L H B
40 200 300 220
50 230 300 270
65 290 320 290
80 310 354 300
100 350 350 320
125 400 380 340
150 480 500 410
200 500 580 450
250 600 670 550
300 700 730 580
350 800 820 630
400 900 920 700
450 1000 950 800
500 1100 1100 900
600 1300 1200 990
700 1400 1550 1120
800 1500 1700 1300

Note: This product is subject to CJ/T154 General Technical Conditions for Slow-closing Check Valves for Water Supply and Drainage.

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