GE Oil & Gas Masoneilan* Valves 28000 Series Varipak Control Valves Precise Microflow Valves with Compact Design and Flexible Capabilities Technical Specifications 10/2012
Table of Contents Numbering System.............................................................................................2 Varilog Anti-Cavitation Varipak.................................................................................. 9 Micro-flow Control Innovation......................................................................3 High Pressure Varipak................................................................................................. 10 General Data............................
Microflow Control Innovation Optimized CV Characteristics The VariPak valve outshines conventional microflow valves with its support of a wide range of nominal Cv values (from 0.0016 to 3.8), using only eight plugs and five seats. Precise Cv Calibration and Selection - CV and FL Flow Coefficient CV Valve Sizes Without Adjustable CV Function With Adjustable CV Function Trim No. RiskFree(3) Critical Flow Factor FL .5" (15mm) .75" (20mm) 1" (25mm) • • • 9 0.0016 0.0020 0.0024 0.0028 0.
General Data Body Trim Type: globe style angle style optional Sizes: 1" (DN 25) standard 1/2" (DN 15) and 3/4" (DN 20) optional Materials: Standard: type 316L St. St.
Materials of Construction 15 14 13 11 9 10 7 6 8 3 2 12 5 Figure 4: Sectional View 1 4 28000 Series Varipak Control Valves | 5
Materials of Construction Materials* (Standard and NACE Construction) (1) Ref. No. Temperature Range -320°F -196°C +450°F +232°C ∇ Description +650°F +343°C ∇ Standard Materials (Optional Materials) ∇ -20°F -29°C +450°F +232°C NACE Materials 316L St. St. ASTM A182 Gr. F 316L (forging) 1 Body 22 HRC Max. 316L St. St. ASTM A351 Gr. CF3M (casting) Optional: Monel®, Hastelloy® C, Alloy 20 2 Seat 17-4 PH St. St. ASTM A564 Gr. 630 Condition H900 (Max CV ≥ 0.10, trims No.
Standard Flangeless Varipak 28000 Series Due to its simple, compact, and versatile stainless-steel body design, the standard flangeless Varipak valve is widely used across a variety of industries. Figure 5: Standard Flangeless Varipak Rated Cv Range/Weight Body/Actuator Assembly Weight Rated CV Range 15.4 lbs (7 kg) 3.8 to 0.0040 (trim No. 0 to 9) Dimensions – inches (mm) Standard Varipak (Stainless Steel) Bar Stock Body (For Non-Castable Material) 4.13 (105) 10.24 (260) Handwheel (optional) 12.
Standard Flanged Varipak 28000 Series The Varipak is also available in flanged configurations with connections and ratings as indicated in the following table. Figure 6: Standard Flanged Varipak Flange Ratings/Weight Face-to-Face Dimensions Flange Ratings Body/Actuator S/A Weight* 4" (102mm) ASME Class 150-600 ISO PN 20-100 (raised face only) 8 to 10 kg (17.4 to 22 lbs) 6.3" (160mm) ASME Class 150-1500 ISO PN 20-250 DIN PN 10-250 (RF, FF, RTS, etc...) 10 to 12 kg (22 to 26.
Varilog Anti-Cavitation Varipak * 28000 MS Series The Varilog multi-stage trim design for the Varipak control valve provides unmatched anti-cavitation performance in low flow applications. By reducing erosion and vibrations, this design helps minimize failure that is often associated with conventional single-seated valves. The Varilog trim is available with the standard Varipak body designs in either the flanged or flangeless configurations.
High Pressure Varipak 28000 HP Series The high-pressure Varipak valve design is recommended for applications involving conditions with very high upstream pressure or pressure drop that exceeds the pressure rating of the standard Varipak body design. Figure 8: High Pressure Varipak Specific Characteristics Rated CV Range Body Rating 0.60 to 0.0040 (trim No. 3 to 9) ASME Class 2500 ISO PN 420 Seat Leakage Materials Body ASME A 182 Gr. F 316L Optional: ASTM A182 Gr.
Bellows Seal Varipak 28000 BS Series For applications that require no leakage at the packing box, the Varipak valve is available with a bellows seal. This design is ideal for applications that involve the handling of flammable, toxic, or explosive fluids. Figure 9A: Bellows Seal Varipak Specific Characteristics Rated CV Range Body Rating 2.3 to 0.0040 (trim No.
Cryogenic Varipak 28000 EB Series Simplified maintenance This Varipak control valve design meets the requirements of cryogenic processes that require thermal insulation. An insulating interface sets up between the valve body (cold zone) and the body extension located in the higher temperature area (warm zone). The valve body assembly and its thermal extension are positioned inside the cold box, and the plug can easily be removed and inspected without disturbing the valve body.
Accessories and Options Pneumatic Positioner (Model 7700P) Figure 11: Model 7700P Pneumatic Positioner Type pneumatic, force balance Mounting built-in bracket in actuator Action direct: increasing instrument signal increases air output Characteristics linear Instrument signal 3 to 15, 6 to 30 or 3 to 27 psi 200 to 1000, 400 to 2050 or (200 to 1850 mbar) 3 to 9, and 9 to 15 psi (200 to 600 and 600 to 1000 mbar) split range Connections 1/4" NPT instrument and supply – 1/8" N
Standard Actuator Options Figure 14: Varipak with Non-Adjustable CV Actuator (cover removed) Figure 13: Non-Adjustable CV Actuator Figure 15: Varipak with 7700E Electropneumatic Positioner 14 | GE Energy Figure 16: Adjustable CV Actuator
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