Unitech valves & Automation

Forged Check Valves

Forged Check Valves

Valves Inspection & Testing

Class 800#
Hydro Shell: 208 Kg/cm2
Seat Test: 153 Kg/cm2
Air Seat: 7 Kg/cm2

Size Range: 1/2″ (15mm) to 2″ (50mm)

Class 1500#
Hydro Shell: 380 Kg/cm2
Seat Test: 279.50 Kg/cm2
Air Seat: 7 Kg/cm2

Size Range: 1/2″” (15mm) to 1 1/2″ (40mm)

Class 2500#
Hydro Shell: 652.50 Kg/cm2
Seat Testing: 478.50 Kg/cm2
Air Seat: 7 Kg/cm2

Size Range: 1/2″” (15mm) to 1 1/2″ (25mm)

Design Features

Bolted Bonnet Construction
Rising / Non Rising Stem
Bore Type: Full Bore
Verticle/Horizontal Mounting
OS & Y Construction
Renewable Seat Rings & Integral Seat Rings
Temperature -27℉C (20℉F) to 427℉C (800℉F)
Anti Blowout proof Stem
By Pass Arrangement for pressure control/regulation
Back Seat arrangement to provide isolation of Stuffing Box for On-Line serviceability
Leakage Class: IV

Technical Specifations

Design StandardISO 15761
Testing StandardAPI 598
Face to Face StandardManufacturer’s Standard
Socket Weld StandardASME B16.11
Screwed End StandardASME B1.20.1
Butt Weld StandardASME B16.25
Flange End StandardASME B16.5

Confirmity to Standards & Codes

General Design & Manufacturing:
API 602/ ISO 15761
Valve Testing: API 598
Face to Face Standard: Manufacturer’s Standard
Flange Ends Conformity: ANSI B 16.5
Butt Weld Ends : ASME B16.25
Socket Weld Standard: ASME B16.11
Screwed End Standard: ASME B1.20.1


Oil Refineries
Chemical & Solvent Industries
Petrochemical Industries
Process Industries
Gas Industries
Water Line Process
Steam Line
Power Plants & Common utilities
Flow Isolation & Regulation

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