Control Valve
Part of the A900 modular system

A900 Automatic Control Valve (Main Valve)

Datasheet

Download datasheet (PDF)

Specifications are indicative. Final specification is confirmed at quotation.

Specifications

Confirmed at quote
Size Range
DN50 to DN1000
Pressure Class
PN10, PN16, PN25
End connection
Flanged
Operating temperature
-10°C to 80°C

Standards

Design & manufacture
EN 1074-5, 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
Plug
Screw
Seal
Seal Retainer
Seat Retainer
Washers

Pressure-temperature rating

Maximum working pressure at each temperature, per pressure class.

ClassPressureMin tempMax temp
PN1010 bar-10°C80°C
PN1616 bar-10°C80°C
PN2525 bar-10°C80°C
Dimensions per size(18 sizes)
SizeL (mm)PN10 OD (mm)PN16 OD (mm)PN25 OD (mm)PN10 OK (mm)PN16 OK (mm)PN25 OK (mm)H (mm)PN10 N-Od (mm)PN16 N-Od (mm)PN25 N-Od (mm)PN10 OB (mm)PN16 OB (mm)PN25 OB (mm)Model CodeWeight
DN502301651651651251251251774-Ø194-Ø194-Ø19999999A900-0050
—
DN652901851851851451451452024-Ø194-Ø198-Ø19118118118A900-0065
—
DN803102002002001601601602198-Ø198-Ø198-Ø19132132132A900-0080
—
DN1003502202202351801801902438-Ø198-Ø198-Ø23156156156A900-0100
—
DN1254002502502702102102202438-Ø198-Ø198-Ø28156156156A900-0125
—
DN1504802852853002402402503338-Ø238-Ø238-Ø28211211211A900-0150
—
DN2006003403403602952953104288-Ø2312-Ø2312-Ø28266266274A900-0200
—
DN25073040540542535035537047812-Ø2312-Ø2812-Ø31319319330A900-0250
—
DN30085046046048540041043053812-Ø2312-Ø2816-Ø31370370389A900-0300
—
DN35098052052055546047049055016-Ø2316-Ø2816-Ø34429429448A900-0350
—
DN400110058058062051552555071016-Ø2816-Ø3116-Ø37480480503A900-0400
—
DN450120064064067056558560072020-Ø2820-Ø3120-Ø37530548548A900-0450
—
DN500125071571573062065066082220-Ø2820-Ø3420-Ø37582609609A900-0500
—
DN600145084084084572577077088520-Ø3120-Ø3720-Ø40682720720A900-0600
—
DN700165091091096084084087591024-Ø3124-Ø3724-Ø43682720720A900-0700
—
DN8001850102510251085950950990126024-Ø3424-Ø4024-Ø49901901928A900-0800
—
DN900185011251125-10501050-126028-Ø3428-Ø40-10011001-A900-0900
—
DN1000185012551255-11601170-126028-Ø3728-Ø43-11121112-A900-1000
—

* 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.

* DN900 and DN1000 are reduced-bore constructions.

Technical drawings(3 pages)

Operating media

Water

Typical applications

  • Pressure control
  • Flow control
  • Level control
  • Pump control

Coatings

Rubber lined

Approvals

WRASISO 9001

Features

  • The A900 is the main valve body used across the automatic control valve range
  • Combined with the appropriate pilot assembly, it can be configured for pressure reducing, pressure sustaining, flow control, level control or pump control duty
  • The rubber-lined diaphragm provides tight shut-off with no packing gland, eliminating the risk of stem leakage
  • 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

Description

The A900 is the main valve body used across the automatic control valve range. Combined with the appropriate pilot assembly, it can be configured for pressure reducing, pressure sustaining, flow control, level control or pump control duty. The rubber-lined diaphragm provides tight shut-off with no packing gland, eliminating the risk of stem leakage.

Selection notes

This control valve is supplied for flanged installation.

Sizes run DN50 to DN1000, in PN10, PN16, PN25.

The body is EN-GJS-500-7.

Seat and trim options are AISI 304 and 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 EN 1074-5, BS EN 1074-5, BS EN 558-1, ISO 5208 and BS EN 12266-1.

Available pressure classes

Pressure classes this product is rated to.

Used in

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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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