Product Details

Product Description

SR204 AC24V 110V 220V electric two-way dynamic balancing brass valve for HVAC

Product description:

SR204 Electric Dynamic Balancing valve is a new product for fan coil temperature control in HAVC system. It combines dynamic equilibrium and electric switch functions in one compact, high control precision, stable operation.SR204 Electric dynamic balancing valve consists of an electric actuator and a dynamic balancing two-way valve. Widely used in HVAC fan coil system it can also be used in other systems with similar functional requirements.

Features:

Electric actuator is used in the beginning of the valve or as PDM execution control part to control closed loop valve double-way and stability for water heating system or central air conditioning water system, directly installed in water heating system on the backwater line or the thermostatic valve, when the actuator power off, the valve will be closed. Paraffin thrusters, the PTC heating driven pusher with spring reset function. Work noise-free operation, location, or the degree of opening stroke indication.

Functions:

1.Electric switch function: according to control signal from the electric room thermostat, switch function will control actuator to turn on or off.

2.Dynamic Balancing function: When the valve is opened in the working pressure range, the dynamic balancing system changes as the differential pressure changes, the flow rate remains balance and not influenced by system pressure fluctuations.

3.Constant flow or the setting flow: flow rate can be set at the factory according to the air conditioning equipment, the flow rate was maintained as the design of flow rate required by the end device.

Material Description:

Body material: Forged Brass

Seals: EPDM

Valves guts: stainless steel or copper alloy

Spring, stem, valve seat: 304 stainless steel

Actuator parameter

Model	Voltage	Power	Time to on or off	Stroke
SR42.B.24	AC24V	2VA	3min(25℃)	3.5min
SR42.B.110	AC110V	2VA	3min(25℃)	3.5min
SR42.B.220	AC220V	2VA	3min(25℃)	3.5min

Technical Parameters:

Technical Parameters:

Nuts connection installation is easy, fast, easy removal

Voltage: AC24C, 110V, 220V

Power consumption: 2VA (consumable power)

Thrust: 110N

Stroke: 3.5mm

Whole distance time: 3 ~ 5min

Opening and closing time: 3min (25 ℃)

Connection Size: M30X1.5 nut

Ambient temperature: -5 ~ 60 ℃

Cable Length : 900mm

Housing material: Flame retardant PC

Shell Protection: IP44

Size range: DN15 DN20 DN25

Working pressure: PN20

Close differential pressure: 4Bar

Working Medium: Water

Medium temperature: 0 ~ 95 ℃

Model and size

model	L(mm)	L1(mm)	H(mm)	Constant flow (m3/h)	Differential pressure	Nominal pressure
DN15 two-way valve	98	143	116	0.8	3.0mpa	2.0mpa
DN20 two-way valve	100	145	118	0.9	0.28mpa	2.0mpa
DN25 two-way valve	102	148	120	1.1	0.25mpa	2.0mpa

CERTIFICATION: ISO, TS, API, GOST, CE....etc

We pay much attention in Test process:

(1) Shell Hydrostatic Test

ANSI B 16.34 Section 7.1
Valve Size NPS	Test pressure	Test Time. Sce
Below DN50	1:5 times the 100°F	15 Sce
DN65~DN200	Rating of ANSI Class	60 Sce
Up DN250	Max. Operating Pressure	180 Sce
	Test pressure should be above 1.5 times than the valve's Max work pressure (100F)

(2) Seal Hydrostatic Test

The pressure should be more 1.1 times than working pressure by seal hydrastatic test

ANSI B 16.34 Section 7.2
Valve Size NPS	Test pressure	Test Time. Sce
below DN50	1:1 times the 100°F	15 Sce
DN65~DN200	Rating of ANSI Class	30 Sce
above DN250	Max. Operating Pressure	60 Sce
	Test pressure should be more 1.5 times than the valve's Max work pressure (100F)	180Sce

(3) Seal Air Test

Seal air leakage test is based on 80PSIG(6kgf/cm2) inert-gas or the air reach the test pressure, then close the valve. after that check the valve whether it is leakage or not.

Packaging & Shipping

Our Services

1.100% factory price, because we are direct producer of ball valve, butterfly valves, check/non-return valves, gate valves and so on.

2.Market, technical support and after-sale service within 24 hours.

3. You can order your own configuration.

A: Manual B: pneumatic C: electric D: bare shaft E: disc with pin F: disc without pin G: double half shaft H: one piece body I: two pieces body J: logo