DIRIS® Check valves by GMI.

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

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

piston swing ball 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® Spring Check valves

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,PN20, PN25
Sizes : Up DN8 to DN400
End connections : Threaded: BSP, NPT
Welded: SW, BW
Flanged: PN16, PN20, PN25, PN50

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
Class : PN200, PN400
Sizes : Up DN8 to DN50
End connections : Threaded: BSP, NPT
Welded: SW, BW

DIRIS® Wafer Check valves

wafer check valves with single plate 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

wafer check valves with dual plate 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

conventional swing check valve MATIÈRES : 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 : PN16-20-25-40-50-100
DIAMÈTRES : DN50 à DN600
RACCORDEMENTS : A souder : BW / A brides : PN16-20-25-40-50-100
Construction possible du clapet équipé d'un levier de blocage.
Contrepoids possible sur le levier du clapet.

Disco-DIRIS® Coaxial Non return Check valves

coaxial non return check valves and foot valves Construction : Clapet à disque
Materials : Brass, Cast iron, Carbon steeel, Stainless steel
Seats : Metal to metal
Class : PN10, PN20, PN25, PN40, PN50, PN100, asa150, asa300, asa600...
Sizes : Up DN8 to DN500
End connections : Threaded: BSP, NPT
Between flanges: PN10, PN20, PN25, PN40, PN50, PN100, asa150, asa300, asa600...
Coaxial check valve has been developed for installation on vertical piping with upward or downward fluid flow.

HYDRO-DIRIS® Ball check valves

ball check valves Construction : Ball check valves
Materials : Cast iron
Seats : Ball: Nitrile
Seat: Metal
Class : PN10,PN16, ASA150
Sizes : Up DN25 to DN500
End connections : Threaded: BSP, NPT
Flanged: PN10, PN16, Asa 150
Horizontal and vertical installation in the pipeline.

ELVO-DIRIS® Lift Check valves

lift check valve Construction : Lift check valves with spring
Materials : Cast iron, Carbon steel, Stainless steel...
Seats : Metal to metal
Class : 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

DINO-DIRIS® Pressure seal check valves

pressure seal non return valves CONSTRUCTION : Pressure seal non return valves
Standard or Y pattern
Piston ou titling disc
Materials : Carbon steel: A216 WCB..., Stainless steel: 316L-A351 CF8M, Special alloys..
Class : Class 150, class 300, class 600, class 900, class 1500, class 2500
Size : Up 2" (DN50) to 16" (DN400)
End connections : Flanges: RF-RTJ
Welded: BW
Pressure seal globe valves API 600
ATEX
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.
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