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Direct Acting Pressure Reducing Valve
Product Introduction
1、 Application Of Direct Acting Pressure Reducing Valve
The Water Pressure Reducing Valves Produced By Our Factory Are Mainly Used In Various Building Water Supply Systems, Fire Protection Systems, Central Air Conditioning Systems, Heating Systems, Etc. It Is Used For Branch Pressure Reduction, Which Can Make The Distribution Of Water Supply Pressure More Balanced, Avoid Partial Water Supply Overpressure, And Optimize The Water Supply Zoning Of High-rise Buildings. It Can Replace Zone Frequency And Variable Speed Water Pumps, And Can Replace Zone Water Pumps In Fire Water Supply Systems For Household Water Supply Systems. It Can Protect All Faucets And Other Water Appliances.
2、 Characteristics Of Direct Acting Pressure Reducing Valve
1. Adopting A Direct Acting Diaphragm Structure, The Internal Structure Is Very Simple, Unobstructed, Reliable In Performance, And Durable.
2. Resistant To Dirt And Water Stains, No Need For Filters Or Bypass Pipes, Extremely Simple Piping, Can Save A Lot Of Space And Piping Costs.
3. The Outlet Pressure Is Precisely Adjustable, And In General, It Can Be Assumed That The Outlet Pressure Is Not Affected By The Inlet Pressure (the Change In Outlet Pressure Is 8% Of △ P1).
4. Excellent Hydraulic Characteristics, Low Pressure Loss, And A Pressure Reduction Ratio Of Over 10:1.
5. Can Meet Various Pressure Reduction Requirements, Especially Suitable For Branch Pressure Reduction Systems.
3、 Working Principle Of Direct Acting Pressure Reducing Valve
The Outlet Pressure Acts On The Bottom Surface Of The Diaphragm And Valve Disc, Compressing The Spring When It Exceeds The Set Value Of The Spring. Close The Valve Disc. As Long As There Is No Water Flow Downstream, The Outlet Pressure Will Remain At The Set Value (with A Change Of Only 8% Of The Inlet Pressure Change); When Downstream Water Is Used, The Outlet Pressure Drops, And The Spring Pushes Open The Diaphragm, Opening The Pressure Reducing Valve. After A Continuous Flow Of Water, The Opening Of The Pressure Reducing Valve Produces A Self Damping Effect, Making The Opening And Closing Actions Tend To Be Stable.
4、 Possible Causes Of Malfunction Of Direct Acting Pressure Reducing Valve
1. Frost Damage Requires Attention To Insulation In Cold Regions.
2. The Water Flow Direction Is Installed Incorrectly, The Pressure Reducing Valve Becomes A Check Valve, And The Outlet Pressure Is 0.
3. The Spring Is Too Tight To Close, And The Pressure Reducing Valve Will Be Directly Connected To P2=P1.
4. The Bypass Pipe Is Leaking, Causing P2 To Deviate From The Set Value. Considering The Superior Reliability And Durability Of This Pressure Reducing Valve, It Is Recommended Not To Install A Bypass Pipe.
5、 Main Technical Parameters Of Direct Acting Pressure Reducing Valve
| Type | Model | Nominal Pressure PN (MPa) | Nominal Diameter DN (MPa) | Connection Type | Valve Body Material | Outlet Pressure (MPa) | Working Temperature ℃ |
| Branch Pressure Reducing Valve | YZ11X-16T、YZ11X-25T | 1.6, 2.5 | 15-50 | Internal Thread | Bronze | 0.05-0.6 (Adjustable) | 0-80℃ |
| YZ11X-16P、YZ11X-25P | Stainless Steel |
6、 Main Dimensions Of Direct Acting Pressure Reducing Valve
| Nominal Diameter DN (MPa) | Size (mm) | Weight (kg) | ||||
| Mm | In | A | B | C | φG | |
| Fifteen | 1/2 | Thirty-one | Sixty | Seventy-six Point Five | Fifty-nine | One Point Two |
| Twenty | 3/4 | Thirty-one | Seventy-five | Seventy-six Point Five | Seventy-three | One Point Two |
| Twenty-five | One | Thirty-six | Eighty-eight | Eighty-five | Eighty-one | One Point Four |
| Thirty-two | 11/2 | Forty-two | Ninety-three | Ninety-eight | Eighty-one | One Point Five |
| Forty | 11/4 | Forty-five | Ninety-eight | One Hundred And Two | Eighty-five | Two |
| Fifty | Two | Fifty-four | One Hundred And Thirty | One Hundred And Seventeen | Ninety-eight | Two Point Six Five |
7、 Installation Of Direct Acting Pressure Reducing Valve
In Household Water Supply Systems, Pressure Reducing Valves Are Usually Installed Behind Water Meters To Protect All Water Appliances Behind Them. If There Is A Risk Of Freezing, Attention Should Be Paid To Heating Or Draining Water.
The Pressure Reducing Valve Can Be Installed In Any 360 ° Direction. But The Arrows Cast On The Valve Body Must Be Consistent With The Actual Direction Of Water Flow.
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