8613858502138
webmaster@cnhengsen.com
enLanguage
Search
Products
Home / Products / HVAC Valve / Globe Valve / Details
Globe Type Non Return Valve

Globe Type Non Return Valve

DDF-S-H series threaded cast iron valves can adjust the flow of cold and hot water after being equipped with DFQ-H series motor drive control devices.Globe type non return valve is widely used in liquid control of central air conditioning, heating, water treatment, industrial processing industries and other systems.
Send Inquiry
Globe Type Non Return Valve

●Valve core: stainless steel 06Cr19Ni10 (two-way), HPb59-1 (three-way)
●Valve stem seal: four-layer V-type and O-type combined nitrile rubber seal, polytetrafluoroethylene sealing sleeve
●Valve stem: stainless steel 06Cr19Ni10
●Valve body, valve cover material: HT250
●Nominal pressure (PN): 1.6MPa
●Working medium: water, fluid temperature 5~95℃
●Valve leakage: ≤0.03%KV
●Flange standard: GB/T 17241.6 PN16

DDF-S-H

 

Order code Product Model Valve type DN Connection Bolt size Kv value Stroke Dimensions Maximum closing pressure difference
[kPa]
L d D H H1
12467 DDF-S-H-232 2 WAY 32 Flange 4×M16 21 20 180 ∅100 ∅135 163 108 600 ------ ------
12468 DDF-S-H-240 2 WAY 40 Flange 4×M16 28 20 200 ∅l10 ∅145 163 119 500 ------ ------
12469 DDF-S-H-250 2 WAY 50 Flange 4×M16 34 20 230 ∅125 ∅l65 167 135 350 ------ ------
12470 DDF-S-H-265 2 WAY 65 Flange 4×M16 54 20 290 ∅145 ∅185 178 165 250 ------ ------
12471 DDF-S-H-280 2 WAY 80 Flange 8×M16 67 20 310 ∅160 ∅200 182 180 200 ------ ------
12472 DDF-S-H-2100 2 WAY 100 Flange 8×M16 120 40 350 ∅180 ∅220 264 200 ------ 300 500
12473 DDF-S-H-2125 2 WAY 125 Flange 8×M16 180 40 400 ∅210 ∅250 275 230 ------ 200 350
12474 DDF-S-H-2150 2 WAY 150 Flange 8×M20 256 40 480 ∅240 ∅285 290 270 ------ 150 200
12475 DDF-S-H-2200 2 WAY 200 Flange 12×M20 330 40 600 ∅295 ∅340 315 329 ------ ------ 150
12670 DDF-S-H-332 3 WAY 32 Flange 4×M16 21 20 180 ∅100 ∅135 163 90 600 ------ ------
12671 DDF-S-H-340 3 WAY 40 Flange 4×M16 28 20 200 ∅l10 ∅145 163 100 500 ------ ------
12476 DDF-S-H-350 3 WAY 50 Flange 4×M16 34 20 230 ∅125 ∅165 167 115 250 ------ ------
12477 DDF-S-H-365 3 WAY 65 Flange 4×M16 54 20 290 ∅145 ∅185 178 145 200 ------ ------
12478 DDF-S-H-380 3 WAY 80 Flange 8×M16 67 20 310 ∅160 ∅200 182 155 150 ------ ------
12479 DDF-S-H-3100 3 WAY 100 Flange 8×M16 120 40 350 ∅180 ∅220 264 175 ------ 250 350
12480 DDF-S-H-3125 3 WAY 125 Flange 8×M16 180 40 400 ∅210 ∅250 275 200 ------ 200 250
12481 DDF-S-H-3150 3 WAY 150 Flange 8×M20 256 40 480 ∅240 ∅285 290 240 ------ ------ 200
12482 DDF-S-H-3200 3 WAY 200 Flange 12×M20 30 40 600 ∅250 ∅340 315 300 ------ ----- 150

 

Installation Instructions

 

IMG974343

 This series of valves is compatible with Honeywell Johnson actuators.
 The valve stem moves downwards in the direction of valve opening.
 Before installing the valve, ensure that the pipeline is clean and free of scale, metal flakes and other debris left during welding.
 The pipeline must be concentric when connected to the valve body and not subject to vibration. The water flow direction should be consistent with that marked on the valve body.
 When the actuator is installed vertically on the valve body, avoid installing the actuator under the valve and leave enough space for daily maintenance (such as disassembling the actuator).
 When maintaining the valve, the power supply must be cut off or isolated, and the water system should not be under pressure.

 

 

FAQ

 

1.What are the advantages of a non return globe valve?

The advantages of a check valve include simple operation and easy maintenance. It can control fluid flow and prevent backflow. The integrated design reduces the number of components in the pipeline and improves the reliability of the system.

 

2.How to judge whether the check valve is in normal working condition?

You can judge by observing the position of the valve stem and the flow of fluid. The rise of the valve stem indicates that the valve is open and the medium should flow in one direction. If backflow occurs, the valve disc will automatically close.

 

3.Is the globe type non return valve suitable for fluids containing solid particles?

Generally speaking, check valves are not suitable for fluids containing a large amount of solid particles, because the particles may damage the valve disc and the sealing surface, causing the check function to fail. If it must be used, a specially designed model should be selected or a filtering device should be added.

 

4.How to perform daily maintenance on the globe type non return valve?

Regularly check the wear of the valve disc, valve seat and sealing surface, ensure the lubrication of the valve stem, and clean the impurities inside the valve to prevent seal failure. At the same time, regularly test the check function of the valve to ensure its normal operation.

 

5.How does the non return globe valve cope with high temperature and high pressure environment?

For high temperature and high pressure environments, it is recommended to select a check valve made of high temperature and high pressure resistant materials (such as stainless steel and alloy steel), and ensure that its design meets the corresponding working conditions to avoid seal failure and valve body damage.

 

 

Hot Tags: globe type non return valve, China globe type non return valve manufacturers, suppliers, factory, Room Thermostats, 1 2 Copper Elbow, 28mm Two Port Valve, 1 Ball Valve, Motorized Three Way Valve, 90 Elbow

Send Inquiry