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Control Valve

A203 Pressure Reducing with Check Valve

Name: A203 Pressure Reducing with Check Valve
Brand: Euro Flow Control
SKU: EFC-346
Availability: InStock

Debug · supplier source (internal only)

Supplier product page ↗EFC datasheet PDF ↗supplier: afc · ref: 346

Specifications

Confirmed at quote

Size Range: DN50–DN600
Pressure Class: PN16
Standards: EN 1074-5
End connection: Flanged PN16

Available sizes

Standard DN sizes covered by this product. Confirmed at quote.

DN50 DN65 DN80 DN100 DN125 DN150 DN200 DN250 DN300 DN350 DN400 DN450 DN500 DN600

Configure your variant(manually adjust box on the right if you require a different spec)

Size
Pressure
End connection

Materials

Body
Diaphragm

Pressure-temperature rating

Maximum working pressure at each temperature, per pressure class.

Class	Temperature	Max pressure
PN10	-10°C	10 bar
PN16	-10°C	16 bar
PN25	-10°C	25 bar
PN10	80°C	10 bar
PN16	80°C	16 bar
PN25	80°C	25 bar

Dimensions per size(16 sizes)

Size	L	H	OD_PN10	OD_PN16	OD_PN25	OK_PN10	OK_PN16	OK_PN25	Weight
DN50	230 mm	177 mm	165 mm	165 mm	165 mm	125 mm	125 mm	125 mm	—
DN65	290 mm	202 mm	185 mm	185 mm	185 mm	145 mm	145 mm	145 mm	—
DN80	310 mm	219 mm	200 mm	200 mm	200 mm	160 mm	160 mm	160 mm	—
DN100	350 mm	243 mm	220 mm	220 mm	235 mm	180 mm	180 mm	190 mm	—
DN125	400 mm	243 mm	250 mm	250 mm	270 mm	210 mm	210 mm	220 mm	—
DN150	480 mm	333 mm	285 mm	285 mm	300 mm	240 mm	240 mm	250 mm	—
DN200	600 mm	428 mm	340 mm	340 mm	360 mm	295 mm	295 mm	310 mm	—
DN250	730 mm	478 mm	405 mm	405 mm	425 mm	350 mm	355 mm	370 mm	—
DN300	850 mm	538 mm	460 mm	460 mm	485 mm	400 mm	410 mm	430 mm	—
DN350	980 mm	550 mm	520 mm	520 mm	555 mm	460 mm	470 mm	490 mm	—
DN400	1100 mm	710 mm	580 mm	580 mm	620 mm	515 mm	525 mm	550 mm	—
DN450	1200 mm	720 mm	640 mm	640 mm	670 mm	565 mm	585 mm	600 mm	—
DN500	1250 mm	822 mm	715 mm	715 mm	730 mm	620 mm	650 mm	660 mm	—
DN600	1450 mm	885 mm	840 mm	840 mm	845 mm	725 mm	770 mm	770 mm	—
DN700	1650 mm	910 mm	910 mm	910 mm	960 mm	840 mm	840 mm	875 mm	—
DN800	1850 mm	1260 mm	1025 mm	1025 mm	1085 mm	950 mm	950 mm	990 mm	—

Approvals

WRASISO 9001

Features

The A203 combines pressure reduction with an integral non-return check function in a single valve body
The check function prevents reverse flow from the downstream zone back into the supply main, particularly important where multiple pressure zones interconnect or where downstream storage can pressurise the supply side

Description

The A203 combines pressure reducing and integral non-return check functions in a single A900 valve body, fitted with a P200 reducing pilot. The check function prevents reverse flow from the downstream zone back into the supply main, important where multiple pressure zones interconnect or where downstream storage can pressurise the supply side. Combining both functions in one body reduces installed length and eliminates a separate check valve.

Smart find

A900 configurations

View full A900 system →

This product is part of the A900 modular system. All configurations share the same hydraulically operated body: the control function is set by the pilot valve(s) attached. An existing A900 body in the field can be reconfigured for a different duty simply by swapping the pilot, without replacing the body.

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Pilot assembly & accessories

Pilot assembly

P200 Reducing Pilot

Reducing pilot — maintains downstream pressure at the pre-set value

Compatible accessories

Needle Valve

Adjusts response speed and damps oscillation in the pilot circuit

Related Control Valves

Control ValveREF 344

A100 Modulating Float Control Valve

Model: —
Size: DN50–DN300
Pressure: PN16
Body: Ductile iron
Standards: EN 1074-5

DEBUG View on supplier site ↗

Add variant details

Adds to your quote request — not a purchase. Refine size, pressure and material before submitting.

Control ValveREF 345

A200 Pressure Reducing Valve

Model: —
Size: DN50–DN600
Pressure: PN16 / PN25
Body: Ductile iron
Standards: EN 1074-5

DEBUG View on supplier site ↗

Add variant details

Adds to your quote request — not a purchase. Refine size, pressure and material before submitting.

Control ValveREF 347

A300 Slow Control Check Valve

Model: —
Size: DN50–DN600
Pressure: PN16 / PN25
Body: Ductile iron
Standards: EN 1074-5

DEBUG View on supplier site ↗

Add variant details

Adds to your quote request — not a purchase. Refine size, pressure and material before submitting.

Control ValveREF 348

A400 Flow Control Valve

Model: —
Size: DN50–DN400
Pressure: PN16
Body: Ductile iron
Standards: EN 1074-5

DEBUG View on supplier site ↗

Add variant details

Adds to your quote request — not a purchase. Refine size, pressure and material before submitting.