Q641F, Q641FH pneumatisk flänsad kulventil
The Q641F/H pneumatic flange ball valve consists of a high-precision pneumatic actuator and a precision-cast ball valve. Den är huvudsakligen indelad i två kategorier: pneumatiska mjuktätande kulventiler (≤200°) och pneumatiska hårdtätade kulventiler (≤550°). Pneumatiska kulventiler har fördelar som kompakt struktur, liten storlek, tillförlitlig drift, låg flödeskoefficient, bra tätningsprestanda, enkelt underhåll, bekväm installation, och stark anpassningsförmåga. Pneumatiska kulventiler kan utrustas med rörelsegränsbrytare, magnetventiler, tryckreduceringsventiler, och en 0,4-0,7 MPa luftkälla för att uppnå on/off-drift, och skicka två par passiva kontaktsignaler för att indikera ventilens öppning och stängning. Pneumatiska flänskulventiler är särskilt lämpliga för applikationer som involverar viskös, partikelformiga, eller fibrösa medier.
Produktnamn: Pneumatic Flanged Ball Valve
Produktmodell: Q641F/H
Nominell diameter: DN15～DN400
Structure Type: Sfärisk
Nominellt tryck: 1.6Mpa～32.0Mpa
Anslutningsmetod: Flänsad, Rån, Gängad, Svetsad
Tillämplig temperatur: ≤550ºC
Aktiveringsmetod: Pneumatisk (manual operation also possible)
Ventilhusmaterial: Gjutstål, Rostfritt stål
Tillverkningsstandard: GB (Kinesisk nationell standard), FRÅN (tysk standard), API (Amerikansk standard), ANSI (Amerikansk standard)
Tillämpligt media: Vatten, Olja, Gas, Flytande
Tillverkare:Zhejiang Kozo Valve Co., Ltd.
Q641F, Q641FH Pneumatic Flanged Ball Valve Product features
(1) The fluid resistance is small. The ball valve has the smallest fluid resistance among all valves. Even the reduced diameter ball valve has a very small fluid resistance.
(2) The thrust bearing reduces the friction torque of the valve stem, making the valve stem’s long-term operation balanced and flexible.
(3) The valve seat has good sealing performance, and the sealing ring made of polytetrafluoroethylene and other materials is used. The structure is easy to seal, and the valve sealing capacity of the ball valve increases with the increase of the medium pressure.
(4) The valve stem seal is reliable. Since the valve stem only rotates and does not move up and down, the packing seal of the valve stem is not easily damaged, and the sealing capacity increases with the increase of the pressure of the medium.
(5) Since materials such as polytetrafluoroethylene have good self-lubricating properties, the friction loss with the ball is small, which helps the ball valve have a long service life.
(6) The bottom-mounted valve stem and the convex steps on the valve stem head prevent the valve stem from spraying out. If the valve stem seal is damaged due to fire, metal contact can also be formed between the convex steps and the valve body to ensure the valve stem sealing.
Q641F, Q641FH Pneumatic Flanged Ball Valve Technical parameters
Nominal diameter DN (mm) 15 20 25 32 40 50 65 80 100 125 150 200
Rated flow coefficient KV 21 38 72 112 170 273 384 512 940 1452 2222 3589
Nominal pressure (MPa) PN1.6, 2.5, 4.0, 6.4 MPa; ANSI 150, 300LB
Allowable pressure difference (MPa) ≤ nominal pressure
Valve body type two-stage cast ball valve
Connection form flange type, welding type, threaded type
Valve core form “O” type spherical valve core
Sealing packing V-type polytetrafluoroethylene packing, flexibel grafitförpackning, etc.
Flow characteristics: Approximate quick-opening type
Movement range 0～90°
Leakage Q according to GB/T4213-92, mindre än 0.01% av klassad KV
Justerbar räckvidd 250:1 350:1
Configuration actuator can be equipped with GT, SR, ST, PÅ, AW and other series of pneumatic actuators
Control mode: switch type (two-position switch control), regleringstyp (4~20mA control)
Q641F, Q641FH Pneumatic Flanged Ball Valve Actuator parameters
Actuator model GT, PÅ, AR, AW series single and double acting pneumatic actuators
Air supply pressure 0.4～0.7MPa
Air source interface G1/4″, G1/8″, G3/8″, G1/2″
Ambient temperature -30～+70℃
Functional form: single-acting actuator: air-closed type (B)–the valve position is open (FO) when the air is lost; air-opening type (K)–the valve position is closed (FC) when the air is lost.
Dubbelverkande ställdon: air-closing type (B)–the valve position is maintained when the air is lost (FL); air-opening type (K)–the valve position is maintained when the air is lost (FL)
Can be equipped with accessories: positioner, solenoid valve, air filter pressure reducer, position retaining valve, travel switch, valve position transmitter, handwheel mechanism, etc.
Q641F, Q641FH Pneumatic Flanged Ball Valve Part material
Part name Material
Valve body WCB 304(CF8) 316(CF8M) 316L(CF3M)
Sphere 2Cr13+ nitriding treatment 304 316 316L
Valve stem 2Cr13 304 316 316L
Valve seat seal: PTFE (polytetrafluoroethylene), PPL (para-polyphenylene), metal seal (volframkarbid)
Filling V-type PTFE PTFE filler, flexible graphite
performance specifications
Nominal diameter DN (mm) DN15-300
Nominal pressure PN (MPa) 1.0 1.6 2.5 4.0 6.4
Test pressure Strength test 1.5 2.4 3.75 6.0 9.60
Sealing test 1.1 1.76 2.75 4.4 7.04
Low pressure air tightness test 0.5～0.7
Tillämpligt media: vatten, olja, ånga, salpetersyra (temperature ≤ 200°C), ättiksyra (temperature ≤ 200°C)
Pneumatic actuator main component materials
Part name Cylinder block End cover Piston Shaft O-ring Indicator shaft Bolt
QW series
AT series aluminum alloy profiles
(hard anodized) die-cast aluminum alloy
(Epoxy resin spray) Die-cast aluminum Steel
(Nickel-phosphorus alloy plating) NBR ABC SUS304
AW series cast steel
(hard anodized) die-cast aluminum steel
(Nickel-phosphorus alloy plating) NBR ABC SUS304
