ANSI/FCI 70-2 章节 4.2.5 对 VI 级的说明: CLASS VI. This class establishes the maximum permissible seat leakage generally associated with resilient seating control valves either unbalanced or balanced single-seat with O-rings or similar gapless seals. Use test procedure Type C. 本等级 VI 级规...
ANSI/FCI 70-2 控制阀泄漏率(Standard for control valve seat leakage testing)根据阀座泄漏量的大小将控制阀的阀座泄漏率分为6个等级,分别是I、II、III、IV、V、VI级,详见下表: ANSI/FCI 70-2 章节 4.2.4 对 IV 级的说明: CLASS IV. This class establishes the maximum permissible leakage generally as...
Leakage:Fci 70-2 Class VI; Temperature:Ordinary Temperature; Media:Gas, Oil, Water, Acid; Standard:Standard; Connection Mode:Flange; Power:Pneumatic; Material:Stainless Steel; Type:Self-Operated; Nominal Diameter(DN):20-300; Length of The Receiver Tube (B):...
Fci 70-2 Class VI Electronic Electric Single Seated Angle Type Control Valve, Find Details and Price about Control Valve Pneumatic Valve from Fci 70-2 Class VI Electronic Electric Single Seated Angle Type Control Valve - Hangzhou Jianeng Valve Co., Ltd.
There are six different seat leakage classifications as defined by ANSI FCI 70-2. The most commonly used by Gemco Valve are CLASS I, CLASS IV and CLASS Vl. CLASS I is also know as dust tight and can refer to metal or resilient seated valves. ...
specified for each class shall not exceed the seat leakage in Table 1 using the test procedure as defined in Section 5. For Classes II through VI each and every valve shall be tested. 4.2 Leakage Classes 4.2.1 CLASS I. A modification of any Class II, ...
Class VI See table 2 Type C Table 2 Nominal Seat Diameter mm (inches) ml per minute bubbles per minute * < 25 (< 1)** 0.15 1** 38 (1.5) 0.30 2 51 (2) 0.45 3 64 (2.5) 0.60 4 76 (3) 0.90 6 102 (4) 1.70 11 152 (6) 4.00 27 203 (8) 6.75 45 250 (10) 11.1 - ...
ansi_fci_70_2_2006 ANSI/FCI 70-2-2006 AMERICAN NATIONAL STANDARD CONTROL VALVE SEAT LEAKAGE Fluid Controls Institute, Inc. Sponsor:Fluid Controls Institute, Inc. 1300 Sumner Ave Cleveland, Ohio 44115-2851
**If the valve seat diameter differs by more than 2 mm ( inch) from one of the values listed, the leakage rate may be obtained by interpolation assuming that the leakage rate varies as the square of the seat diameter. 3 Test Procedure Type C - Class VI Test medium shall be air or ...
4 5.4 test procedure type c - class vi 5.4.1 test medium shall be air or nitrogen gas at 10-52c (50-125f). 5.4.2pressure of the test medium shall be the maximum rated differential pressure across the valve plug or 3.5 bar (50 psig) whichever is the least. 5.4.3the test fluid ...