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Check valves

The GMI Diris check valve opens automatically under pressure from a fluid in a particular direction, and closes automatically to prevent fluid flow in the opposite direction.

ECO-DIRIS® Swing Check valves

Materials : Stainless steel, Brass, Bronze
Seats : Metal- to metal, Soft seat
Class : PN16, PN40
Sizes : Up DN8 to DN100
End connections : Threaded: BSP

PRO-DIRIS® Forged Check valves

Construction : Forged check valves : ball, piston or swing scheck
On request sping
Materials : Carbon steel : A105…, Stainless steel: 316L-304L…, Special alloys...
Seats : Metal to metal
Class : 800-1500-1500-2500lbs
Sizes : Up DN8 to DN50
End connections : Screwed NPT
Welded SW, BW
Between flanges PN20, PN50, PN100, PN150, PN250, PN420, Asa150, asa300, asa600, asa900, asa1500, asa2500
Full or reduce bore
API 602
ATEX

DISCO-DIRIS® 3 piece Spring Check valves

Construction : Spring return check valves
Materials : Brass, Cast iron, Carbon steel, Stainless steel...
Seats : Metal to metal, soft seat
Class : PN10, PN16, PN25
Sizes : Up DN8 to DN400
End connections : Threaded: BSP, NPT
Welded: SW, BW
Flanged: PN16, PN25

DISCO-DIRIS® High pressure 3 piece Spring Check valves

high pressure disc non return check valves

Construction : Piston or ball check valves
Materials : Bronze, Carbon steel, Stainless steel...
Seats : Metal to metal, PTFE
Série : PN200, PN400
Sizes : Up DN8 to DN50
End connections : Threaded: BSP, NPT
Welded: SW, BW

DIRIS® Wafer Check valves

clapet anti retour sandwich simple battant

Construction : Wafer Check valve with single plate
Materials : Carbon steel, Stainless steel: 304L-316L, Cast iron, Bronze...
Seats : Metal to metal, Nitrile, PTFE, Silicone, Viton
Class : PN10, PN16, PN20, PN25, PN40, PN50, PN100
Sizes : Up DN40 to DN800
End connections : Flanged: PN10, PN16, PN20, PN25, PN40, PN50, PN100
Fully automatic, spring-loaded and double-guided on request

DUO-DIRIS® Duo Check valves

Construction : Dual-plate non return check valves
Materials : Carbon steel, Stainless steel: 304L-316L, Cast iron, Bronze...
Seats : Metal to metal, Nitrile, PTFE, Silicone, Viton…
Class : PN10, PN16, PN20, PN25, PN40, PN50, PN100
Sizes : Up DN40 to DN800
End connections : Flanged: PN10, PN16, PN20, PN25, PN40, PN50, PN100
Fire safe on request

DINO-DIRIS® Conventional swing check valve

Materials : Acier Carbone : A216 WCB-GSC 25…, Inox : 316…, Fonte : GS, Alliages spéciaux...
Étanchéité des Clapets : Métal-Métal, Métal-Joint
Principe : Clapet à battant dans un corps
Série : PN16, PN20, PN25, PN40, PN50, PN100
Diamètres : DN50 à DN600
Raccordements : A souder : BW
A brides : PN16, PN20, PN25, PN40, PN50, PN100
Construction possible du clapet équipé d'un levier de blocage.
Contrepoids possible sur le levier du clapet.

Clapet à Disque DISCO-DIRIS®

Construction : Clapet à disque
Matières : Laiton, Fonte, Inox
Étanchéité des Clapets : Métal-Joint
Série : PN10, PN16, PN25, PN40
Diamètres : DN8 à DN500
Raccordements : Taraudé : BSP
Entre brides : PN16, PN20, PN25, PN40
Clapets pour utilisation sur tuyauteries verticales ou horizontales.
Crépine de protection

HYDRO-DIRIS® Ball check valves

Construction : Ball check valves
Materials : Cast iron
Seats : Ball: Nitrile
Seat: Metal
Class : PN10, PN16
Sizes : Up DN25 to DN400
End connections : Threaded: BSP, NPT
Flanged: PN10, PN16, Asa 150
Horizontal and vertical installation in the pipeline.

ELVO-DIRIS® Lift Check valves

Construction : Lift check valves with spring
Materials : Cast iron, Carbon steel, Stainless steel...
Seats : Metal to metal
Class : PN10, PN16, PN25, PN40, PN63, PN100, PN160
Sizes : Up DN15 to DN150
End connections : Flanged: PN16, PN25, PN40, PN63, PN100, PN160
Y pattern or conventional pattern.
EN 14341 lift check valve

Clapet DIRIS® Autoclave

Construction : Clapet à battant, Piston ou titling disc, Chapeau Autoclave
Matières : Acier : A216 WCB, Inox : 316L-A351 CF8M, Alliages spéciaux...
Série : 600lbs, 900lbs, 1500lbs, 2500lbs, 4500lbs
Diamètres : 2" (DN50) à 30" (DN750)
Raccordements : A brides : RF, RTJ
A souder : BW
Clapets selon norme de construction API 600.
Clapets ATEX sur demande.

Our offer is drawn up to satisfy the specific operating conditions of your application. Our global offer is based on: -The construction of the check valves: forged or cast, -The design of the check valves: whether they have a disc, a globe, a piston, a flap, a ball, or a bead. -Horizontal or vertical installation of the check valves. -Operating pressure, -Operating temperature, -Compatibility of the body and seal materials with the fluid being conveyed.

DIRIS® Check valves by GMI.