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Ductile Iron Grooved Flange Adapter, UL CE Listed Fire Protection Grooved Flange Adaptor for Fire Sprinkler Pipeline

This UL listed grooved equal cross is a dedicated grooved fitting for fire‑protection piping. Made of high‑strength ductile iron with red epoxy anti‑corrosion coating. Equal‑diameter four‑way structure realizes pipeline shunting and confluence.
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Product Description

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28.XGPQT08短管法兰.png


Rated Diameter
mm


Qutside Diameter
G

MPa
Rated Pressure

Measurement(mm)

Do

L

n-φ

50

60.3

125

65

4-φ18

65

76.1

145

55

4-φ18

80

88.9

160

55

8-φ18

100

108

180

65

8-φ18

100

114

180

55

8-φ18

125

133

1.6

210

70

8-φ18

125

139.7

210

70

8-φ18

150

159

240

70

8-φ22

150

165

240

52

8-φ22

200

219

295

78

12-φ22

250

273

355

76

12-φ25

300

329

410

90

12-φ25

350

377

470

100

16-φ25

Item

Parameter

Model

Grooved Flange Adapter

Body Material

Ductile Iron

Surface Treatment

Red Epoxy Powder Coating

Connection Type

Grooved end + Flange bolt‑hole end

Working Pressure

2.5MPa

Applicable Pipe

Grooved steel pipe

Size Range

DN50‑DN350

Certification

UL Listed, CE

Application

Transition between grooved pipe and flanged fire equipment

Main Features

  1. Ductile iron cast body with red epoxy powder coating, anti‑corrosion for fire‑fighting piping system

  2. One grooved end, one bolt‑hole flange end, realizes conversion between grooved pipe and flanged equipment

  3. Standard flange bolt holes for connecting valves, pumps and flanged accessories

  4. Smooth inner bore, low water flow resistance

  5. UL, FM & CE certified, comply with international fire‑safety standards

  6. Grooved quick‑assembly design, no welding required

Product Advantages

  1. High‑strength ductile iron casting, withstand pipeline water pressure and water hammer impact

  2. Red epoxy powder coating, excellent rust‑proof performance for indoor fire‑protection environment

  3. Transition fitting connects grooved steel pipe to flanged valves/pumps, simplifies on‑site connection

  4. Grooved side fast installation with coupling, no hot‑work operation, improves construction safety

  5. UL & CEcertification, meets strict acceptance requirements of overseas fire‑protection projects

  6. Complete size range, widely used for grooved‑flange transition in fire sprinkler systems

Application Scenarios

‑ Fire sprinkler grooved pipeline equal‑diameter four‑way shunting

‑ Building fire‑fighting water supply grooved pipe network

‑ Shopping mall, hotel, hospital fire pipe four‑way branch connection

‑ Factory, warehouse fire‑protection piping engineering

‑ Overseas fire‑safety projects requiring UL certification

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Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material Inspection

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable fire hydrant valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of fire hydrant valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Surface Treatment

fire hydrant valve surfaces are professionally shot blasted to remove rust, scale and impurities. by epoxy powder coating, red fire‑retardant painting or hot‑dip galvanizing for long‑term anti‑corrosion performance.

Pressure Testing

Every fire hydrant valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.

What is grooved flange adapter used for?

To convert grooved pipe connection to flange connection for valves, pumps and fire equipment.

Is welding required during installation?

No, grooved side connects with grooved coupling, flange side bolts onto flanged device.

What certifications are available?

UL Listed and CE certification for fire‑protection application.

For more products, please contact us

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