Automatic Sprinkler System Equipment

Preaction Valve Assemblies

Project-configured valve assemblies for preaction sprinkler systems, available in flanged and grooved connection versions. Buyers can match the required nominal size, connection and assembly scope without relying on domestic model codes.

DN100–DN250Approx. 4–10 inFlanged / GroovedProject-Configured TrimOEM / ODM

Release method, working pressure, flange drilling or groove profile, trim scope and control arrangement are confirmed for each project before production.

Technical overview

Materials and nominal pressure

The standard materials, solenoid voltage and nominal pressure below apply to all listed flanged and grooved models, including standard and current designs. Final assembly dimensions depend on the selected model.

Confirmed series information

International product name
Preaction Valve Assembly
Available nominal sizes
DN100 / 4 in; DN150 / 6 in; DN200 / 8 in; DN250 / 10 in
Connection versions
Flanged and grooved
Factory references
ZSFY series
Assembly height
570–1000 mm depending on size, connection and design version
Release method
To be specified for the project
Nominal pressure
1.6 MPa
Valve and trim materials
Ductile iron body; NBR seals; galvanized steel trim piping; brass valve components; epoxy coating; DC 24 V solenoid
Approval / execution standard
No foreign approval claimed; documentary scope available on request

Available configurations

Models currently available for quotation

Use the ZSFY model references to identify the required assembly. Confirm overall height and trim layout for the selected configuration before ordering.

International configurationNominal sizeConnectionApprox. assembly heightModel
Preaction Valve AssemblyDN100 / 4 inFlanged570 mmZSFY100
Preaction Valve Assembly — standard designDN150 / 6 inFlanged665 mmZSFY150
Preaction Valve Assembly — current designDN150 / 6 inFlanged690 mmZSFY150
Preaction Valve Assembly — standard designDN200 / 8 inFlanged825 mmZSFY200
Preaction Valve Assembly — current designDN200 / 8 inFlanged865 mmZSFY200
Preaction Valve AssemblyDN250 / 10 inFlanged1000 mmZSFY250
Grooved Preaction Valve AssemblyDN100 / 4 inGrooved590 mmZSFY100(G)
Grooved Preaction Valve AssemblyDN150 / 6 inGrooved740 mmZSFY150(G)
Grooved Preaction Valve AssemblyDN200 / 8 inGrooved905 mmZSFY200(G)

For quotation, specify nominal size, connection, working pressure, release method, required trim and accessories, electrical requirements, quantity and destination market.

Configuration scope

Quoted as an assembly, not only as a valve body.

The supply can be reviewed against a project valve schedule, piping diagram, drawing or approved sample. The final quotation identifies what is included, what remains by others and which technical documents require approval.

Valve size & connectionFlanged or grooved versions from DN100 to DN250.
Release arrangementConfirmed according to the required project control logic.
Trim & alarm componentsItemized against the approved assembly scope.
Electrical requirementsDC 24 V solenoid; control interfaces and additional components are specified for the project.

Product photographs

Compare the construction and visible markings. Open a photograph to enlarge it; confirm the required configuration with the quotation.

Flanged preaction assembly — sample layout
Flanged preaction assembly — sample layoutEnlarge photograph →
Grooved preaction valve assembly — product sample
Grooved preaction valve assembly — product sampleEnlarge photograph →

Configuration details

Compare the specifications for each named configuration below. Values apply only to the configuration shown.

All preaction models — materials, voltage and nominal pressure

These specifications apply to all listed flanged and grooved preaction assemblies, including standard and current designs. Nominal pressure is a designation, not a test-pressure value.

Body / bonnet
Ductile iron
Seat / seal
NBR sealing components
External trim piping
Galvanized steel
Material
Brass valve components
Finish
Epoxy coating
Solenoid voltage
DC 24 V
Nominal pressure
1.6 MPa

OEM / ODM support

Prepared for your drawing and market requirements.

Product marking, nameplate, connection arrangement, trim layout and export packaging can be reviewed against the customer drawing, technical schedule or approved sample.

Nameplate & markingCustomer logo, model and order information subject to available marking space.
Connection reviewFlange drilling and groove requirements confirmed by approved technical data.
Assembly configurationTrim and component scope reviewed for the required project arrangement.
Export packagingLabels, cartons, shipping marks and documentation prepared to order.

Send your preaction valve schedule.

Start with DN size, flanged or grooved connection, and quantity. Add system working pressure, release method, trim scope, control requirements and destination when available.