PQ340H, Robinet à tournant sphérique excentrique à joint dur PQ340Y
The PQ340H/Y hard-seal eccentric ball valve utilizes an eccentric valve body, boule excentrique, et siège de soupape. Lorsque la tige de valve tourne, il se centre automatiquement sur une trajectoire commune, tightening further during closing to achieve a perfect seal. The ball and seat are completely separated, eliminating wear on the sealing ring and overcoming the problem of constant wear between the sealing surface and the ball in traditional ball valves. Un matériau élastique non métallique est intégré dans le siège métallique, providing excellent protection for the seat’s metal surface. This product is particularly suitable for media in the steel industry, aluminum industry, fiber, petites particules solides, pulpe, cendre de charbon, et gaz de pétrole.
Nom du produit: Robinet à tournant sphérique excentrique à joint dur
Modèle de produit: PQ340H, PQ340Y
Diamètre nominal: DN15～DN2200
Structure: Sphérique
Pression nominale: 1.6Mpa ~ 32,0 Mpa
Méthode de connexion: Bride
Température Applicable: -20ºC~+180ºC~350ºC~550ºC
Méthode d'actionnement: Manuel, Worm Gear, Électrique, Pneumatique
Matériau du corps de vanne: Acier au carbone, Acier moulé, WCB, Acier inoxydable
Norme de fabrication: FR (Norme nationale chinoise), DEPUIS (Norme allemande), API (Norme américaine), ANSI (Norme américaine)
Médias applicables: Eau, Huile, Slurry, Sewage, Gaz, Liquide
Fabricant: Zhejiang Kozo Valve Co., Ltée.
Structural Features
1. The valve seat features an external step that mates with the internal step of the valve body, preventing the ball from jamming or disengaging from the seat.
2. Utilizing an eccentric valve body, boule excentrique, et siège de soupape, the valve stem automatically centers itself along a common trajectory during rotation. Pendant la fermeture, the valve tightens further, achieving a perfect seal. Donc, the eccentric hemispherical valve offers reliable and safe sealing performance. During valve opening and closing, the ball completely disengages from the seat, eliminating wear on the sealing surface and overcoming the problem of constant wear between the valve seat and ball sealing surfaces in traditional ball valves.
3. Non-metallic elastic material is incorporated into the metal seat, providing excellent protection for the metal sealing surface.
4. The hemispherical design creates a shearing effect between the ball and seat, making it particularly suitable for media containing fibers, petites particules solides, and slurries.
5. When fully open, it offers high flow capacity, low pressure loss, and prevents media from accumulating in the valve body cavity.
6. This product has precise adjustment and reliable positioning functions, the flow characteristics are approximately percentage, the adjustable range is large, and the maximum adjustment ratio is 100:1.
Execution Standards
Conception et fabrication: GB12237-89
Flange Connection: GB/T17241.6998, GB/T9115 (Steel)
Longueur structurelle: GB12221-89
Pressure Test: GB/T13927
Performance Parameters
Pression nominale (MPa): 0.6 1.0 1.6 2.5 4.0
Diamètre nominal (mm): 40-600 40-600 40-600 40-600 40-600
Sealing Test Pressure (MPa): 0.66 1.1 1.76 2.75 4.4
Shell Test Pressure (MPa): 0.9 1.5 2.4 3.75 6.0
Température Applicable (°C): -29～300, -29～425, -29～540
Médias applicables: Clean water, seawater, sewage, acides, alkalis, liquids, boues, vapeur, fuel gas, huiles
Drive Method: Manuel, Électrique, Pneumatique
Connection Type: Connexion à bride, Wafer connection
Installation Method: Vertical installation, Horizontal installation
