Self-operated differential pressure control valve

Technical Parameter

Item model number: ZYC

Nominal diameter: DN15-125mm

Nominal pressure: PN1.6MPa

Applicable temperature: 0~100℃

Body material: cast iron, cast steel

Applicable medium: non-corrosive liquids such as water and oil

Differential pressure control range: 10~30KPa

Flange standard: GB/T 17241.6, GB/T 9113

Test standard: GB/T 13927, API598


Product Detail

Product Description

Self-operated differential pressure control valve is an automatic constant pressure differential valve for balancing hydraulic conditions. It is used in water systems such as centralized arch heating and central air conditioning. Especially suitable for household metering heating system and variable flow air conditioning system. Ensure that the system is basically unchanged, reduce noise, balance resistance, eliminate heat network and hydraulic imbalance.


Product Features

1. It is suitable for the water system that needs flow control, especially suitable for the flow control of non-corrosive liquid media such as heating and air conditioning.

2. Installed in the water system, after one adjustment before operation, the system flow can be automatically constant at the required set value.

3. It can automatically eliminate the hydraulic imbalance caused by various factors in the water system, maintain the flow required by the user, and overcome the "uneven heating and cooling".

4. Improve the qualified rate of room temperature for heating and air conditioning.

5. It can effectively overcome the bad operation mode of "large flow and small temperature difference", improve the energy efficiency of the system, and realize economical operation.


Material Of Main Parts

Part NameBody, bonnetStemDiscDiaphragm
MaterialGrey cast iron, cast steelStainless steelCast copperNitrile rubber


自力式压差控制阀(图1)


Main External Connection Dimensions

DN1520253240506580100125
Connection methodThreadFlange
L110110115130200215230275290310
H(mm)Constant pressure type95110130140190205240300350380
Flow m3/h0.2-10.3-1.50.5-21-41.5-62-83-125-2010-3015-45