A200 Pressure Reducing Valve3 of 30 control valvesA300 Slow Control Check Valve

Control Valve

Part of the A900 modular system

A203 Pressure Reducing with Check Valve

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

Datasheet

Download datasheet (PDF)

Specifications are indicative. Final specification is confirmed at quotation.

Specifications

Confirmed at quote

Size Range: DN50 to DN800
Pressure Class: PN10, PN16, PN25
End connection: Flanged
Operating temperature: -10°C to 80°C

Standards

Design & manufacture: BS EN 1074-5
Inspection & test: ISO 5208, BS EN 12266-1
Face to face: BS EN 558-1

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

Size
Pressure
End connection

Materials

All available material options per part. Click a pill to set it in the configurator.

Body
Bonnet
Seat
Stem
Spring
Bolts
Bush
Cap
Caulking Nut
Diaphragm
Disc Holder
Eye Bolts
Fix Washer
Fixing Holder
O Rings
Pilot Adjusting Screw
Pilot Body
Pilot Bonnet
Pilot Cap
Pilot Diaphragm
Pilot Disc
Pilot Fixing Holder
Pilot Jam Nut
Pilot Nut
Pilot O Ring
Pilot Plug
Pilot Screw
Pilot Spring
Pilot Spring Table
Pilot Yoke
Plug
Screw
Seal
Seal Retainer
Seat Retainer
Washer

Pressure-temperature rating

Maximum working pressure at each temperature, per pressure class.

Class	Pressure	Min temp	Max temp
PN10	10 bar	-10°C	80°C
PN16	16 bar	-10°C	80°C
PN25	25 bar	-10°C	80°C

Dimensions per size(16 sizes)

Size	L (mm)	H (mm)	OD PN10 (mm)	OD PN16 (mm)	OD PN25 (mm)	OK PN10 (mm)	OK PN16 (mm)	OK PN25 (mm)	N-Od PN10 (mm)	N-Od PN16 (mm)	N-Od PN25 (mm)	OB PN10 (mm)	OB PN16 (mm)	OB PN25 (mm)	Model Code	Weight
DN50	230	177	165	165	165	125	125	125	4-Ø19	4-Ø19	4-Ø19	99	99	99	A900-0050	—
DN65	290	202	185	185	185	145	145	145	4-Ø19	4-Ø19	8-Ø19	118	118	118	A900-0065	—
DN80	310	219	200	200	200	160	160	160	8-Ø19	8-Ø19	8-Ø19	132	132	132	A900-0080	—
DN100	350	243	220	220	235	180	180	190	8-Ø19	8-Ø19	8-Ø23	156	156	156	A900-0100	—
DN125	400	243	250	250	270	210	210	220	8-Ø19	8-Ø19	8-Ø28	156	156	156	A900-0125	—
DN150	480	333	285	285	300	240	240	250	8-Ø23	8-Ø23	8-Ø28	211	211	211	A900-0150	—
DN200	600	428	340	340	360	295	295	310	8-Ø23	12-Ø23	12-Ø28	266	266	274	A900-0200	—
DN250	730	478	405	405	425	350	355	370	12-Ø23	12-Ø28	12-Ø31	319	319	330	A900-0250	—
DN300	850	538	460	460	485	400	410	430	12-Ø23	12-Ø28	16-Ø31	370	370	389	A900-0300	—
DN350	980	550	520	520	555	460	470	490	16-Ø23	16-Ø28	16-Ø34	429	429	448	A900-0350	—
DN400	1100	710	580	580	620	515	525	550	16-Ø28	16-Ø31	16-Ø37	480	480	503	A900-0400	—
DN450	1200	720	640	640	670	565	585	600	20-Ø28	20-Ø31	20-Ø37	530	548	548	A900-0450	—
DN500	1250	822	715	715	730	620	650	660	20-Ø28	20-Ø34	20-Ø37	582	609	609	A900-0500	—
DN600	1450	885	840	840	845	725	770	770	20-Ø31	20-Ø37	20-Ø40	682	720	720	A900-0600	—
DN700	1650	910	910	910	960	840	840	875	24-Ø31	24-Ø37	24-Ø43	682	720	720	A900-0700	—
DN800	1850	1260	1025	1025	1085	950	950	990	24-Ø34	24-Ø40	24-Ø49	901	901	928	A900-0800	—

* DN125 and DN350 use the same internals as DN100 and DN300 respectively.

* DN450 and DN700 use the same internals as DN400 and DN600 respectively.

* AISI 304 is the factory standard stainless steel grade; consult the factory for AISI 316.

Technical drawings(3 pages)

Operating media

Water

Typical applications

Pressure zone boundaries
Water distribution
Building supply with backflow risk

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
Top and seat ring guided stem and diaphragm assembly for long life and reliability
All iron components are fusion epoxy bonded for corrosion resistance
Easy maintenance without removal from the main line
Nylon reinforced diaphragm for long-term service
Drip-tight shut-off
Globe design for superior control characteristics
Ductile iron bodies for higher strength and durability
Corrosion-resistant stainless steel seat and disc retainer ring
Various pilots and accessories available for configuration into many different applications
Special V-Port and double chamber are options, consult factory

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.

Selection notes

This control valve is supplied for flanged installation.

Sizes run DN50 to DN800, in PN10, PN16, PN25.

The body is EN-GJS-500-7.

Seat and trim options are Stainless Steel AISI 304 and Stainless Steel AISI 316. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.

Stated service media include water.

It is catalogued for Water & Wastewater.

Working temperature is -10°C to 80°C.

Built to BS EN 1074-5, BS EN 558-1, ISO 5208 and BS EN 12266-1.

Supplier remarks

Control Loop diagram (page 4) shows the check function in the circuit: Upstream Ball Valve, Y Strainer, Upstream Gauge, Flow controller, Pressure Reducing Pilot Valve, Downstream Gauge, Downstream Ball Valve, Downstream check valve, Upstream check valve.

Available pressure classes

Pressure classes this product is rated to.

PN10 PN16 PN25

Used in

Water & Wastewater

Related guides

Request a Quote

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Variant details2 filled

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Size

Available: DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, DN300, DN350, DN400, DN450, DN500, DN600, DN700, DN800

Pressure

Available: PN10, PN16, PN25

End connection

Actuation

Manual and gear operation ships with the valve. Powered actuation is sourced locally by the buyer.

Required approvals

None required

We confirm the certification with the manufacturer before quoting

Body

Available: EN-GJS-500-7

Seat

Available: 2 options

Stem

Available: 2 options

Plug

Available: 2 options

Additional parts (optional)

Bonnet

Available: Ductile Iron GJS 500-7

Spring

Available: 2 options

Bolts

Available: 2 options

Bush

Available: Bronze C61900

Cap

Available: GJS 500-7

Caulking Nut

Available: A4

Diaphragm

Available: EPDM + Nylon fabric (Nylon Reinforced Rubber)

Disc Holder

Available: GJS 500-7

Eye Bolts

Available: Carbon Steel 1040

Fix Washer

Available: Bronze

Fixing Holder

Available: GJS 500-7

O Rings

Available: NBR

Pilot Adjusting Screw

Available: AISI 304

Pilot Body

Available: AISI 304

Pilot Bonnet

Available: AISI 304

Pilot Cap

Available: ABS

Pilot Diaphragm

Available: EPDM + Nylon

Pilot Disc

Available: AISI 304 + EPDM

Pilot Fixing Holder

Available: AISI 304

Pilot Jam Nut

Available: A2

Pilot Nut

Available: A2

Pilot O Ring

Available: NBR

Pilot Plug

Available: AISI 304

Pilot Screw

Available: A2

Pilot Spring

Available: SiCrV

Pilot Spring Table

Available: 2 options

Pilot Yoke

Available: AISI 304

Screw

Available: 2 options

Seal

Available: EPDM

Seal Retainer

Available: GJS 500-7

Seat Retainer

Available: 2 options

Washer

Available: 2 options

Notes for the quote

Quantity

Your variant details are attached. Submit any time from My RFQ.

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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DN50 to DN800

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DN50 to DN800

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DN50 to DN800

A20B Pressure Reducing Valve + Low Flow Rate Bypass

DN50 to DN200

A2A5 Surge Anticipating Control Valve

DN50 to DN800

A506 Pressure Sustaining Valve with Solenoid Control

DN50 to DN800

A6DV Dual Solenoid Control Valve

DN50 to DN300

A7MD Pump Control Valve - Passive Protection

DN50 to DN800

A800 Pressure Differential Valve

DN50 to DN800

A900 Automatic Control Valve - Threaded

DN40 to DN50

R900 Main Valve - Reduced Bore

DN80 to DN1000

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

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Add variant details

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

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Add variant details

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