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Strahman DV Series Manual
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Strahman DV Series Manual

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VESSEL & REACTOR VALVES
DV & VL SERIES
VESSEL & REACTOR VALVES
VL Series
SOFT SEAL PISTON VALVES
SOFT SEAL PISTON VALVES
PROCESS VALVES

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Summary of Contents for Strahman DV Series

  • Page 1 VESSEL & REACTOR VALVES DV & VL SERIES VESSEL & REACTOR VALVES VL Series SOFT SEAL PISTON VALVES SOFT SEAL PISTON VALVES PROCESS VALVES...
  • Page 2 SERIES DV, STANDARD RANGE ORIGINAL STRAhmAN RAm-TypE DRAIN VALVE FEATURES • Quality System Registered to ISO 9001:2008 Certificate #003264 • Valve flanges meet the requirements of ANSI B16.5 • All valves manufactured in accordance to ASME/ANSI B16.34 standard • All Valves 100% Leak Tested for bubble tight shut-off • V acuum pressure tested to 28 vacuum inches of mercury (0.94 PSIA) upon request • S trahman 1-inch to 6-inch 150, 300, & 600 Class ANSI drain valves qualify by design to API Fire Test for Valves • 3 /16-inch RF on the inlet flange for mating to Strahman drain valve nozzles, adapters and inserts. • 45° and 60° straight neck discharges are standard • P acking Materials: – PTFE rated -328°F (-200°C) to 450°F (232°C) – MR to 650°F (343°C) – Graphite rated to 1000°F (538°C) – TFM 1600 rated -328°F (-200°C) to 450°F (232°C) AVAILABLE SIZES • 1-inch, 2-inch and 3-inch, 900, 1100 and 1500 Class ANSI RF flanges* • 1-inch through 6-inch 150, 300 and 600 Class ANSI RF flanges* • 8-inch, 10-inch and 12-inch, 150 and 300 Class ANSI RF • O ptional flanges include DIN, British Standard, JIS, ANSI RJ,...
  • Page 3 Inlet Ring * † Body † 316SST Gland Nut 316SST Gland Stud 304SST Cage Lock † 316SST Cage Lock Gasket * † Opening Indicator 304SST * Indicates recommended spare parts † Denotes wetted parts CAUTION When a Strahman adapter is not supplied with the drain valve, or the customer’s nozzle does not have a piloting recess, the nozzle bore must be ¼” larger than the piston diameter. This clearance prevents the piston from scoring on the inside of the nozzle which could cause the valve to leak. 1” through 2 ½” Valve Body Deck www.strahmanvalves.com...
  • Page 4 4 ¾” 6 ⅜” 4 ⅞” 25 ½” 12” 1.181” 5 ½” 7 ⅝” 6 ⅛” 24” 38 ⅞” 12” 0.984 4 ¾” 6 ⅜” 4 ⅞” * S trahman piston extensions are measured from the height of the RF for an ANSI standard flange. For ANSI 600 class valves the extension is equal to the actual RF provided by Strahman. For ANSI 150 and 300 class valves the ANSI standard RF height is ” while Strahman provides ” height for piloting as standard. Customers can request a ” RF height for RF-to-RF flange installation and the piston extension will equal the actual distance from the RF. For the Strahman standard ( ” height) the distance measured from the RF to the tip of the piston will be ⅛” less than the description. Example: 2” ANSI 150 Drain Valve with 6” piston extension will measure 5 ⅞” from a standard Strahman RF to the tip of the piston. Piston extension tolerances tighter than ⅛” available upon request. www.strahmanvalves.com...
  • Page 5 Stem Guide 304SST Guide Screws 304SST Bearing Retainer 303SST Bearing Seal Piston Set Screw 304SST Cage Lock Gasket * † Grease Fitting Steel * Indicates recommended spare parts † Denotes wetted parts CAUTION When a Strahman adapter is not supplied with the drain valve, or the customer’s nozzle does not have a piloting recess, the nozzle bore must be ¼” larger than the piston diameter. This clearance prevents the piston from scoring on the inside of the nozzle which could cause the valve to leak. 3” and Larger Valve Body Deck www.strahmanvalves.com...
  • Page 6 18” * Strahman piston extensions are measured from the height of the RF for an ANSI standard flange. For ANSI 600 class valves the extension is equal to the actual RF provided by Strahman. For ANSI 150 and 300 class valves the ANSI standard RF height is ”...
  • Page 7 Piston Set Screw 304SST Cage Lock Gasket * † Piston Connector * Bronze (SST Avail.) Air Cylinder Cylinder Stud 304SST Cylinder Nut 316SST * Indicates recommended spare parts † Denotes wetted parts CAUTION When a Strahman adapter is not supplied with the drain valve, or the customer’s nozzle does not have a piloting recess, the nozzle bore must be ¼” larger than the piston diameter. This clearance prevents the piston from scoring on the inside of the nozzle which 1” through 2 ½” Valve Body Deck could cause the valve to leak. www.strahmanvalves.com...
  • Page 8 * Dimensions G, H, L are for Air-Operated Drain Valves. For Hydraulic Drain Valve dimensions, please consult factory. Strahman piston extensions are measured from the height of the RF for an ANSI standard flange. For ANSI 600 class valves the extension is equal to the actual RF provided by Strahman. For ANSI 150 and 300 class valves the ANSI standard RF height is ”...
  • Page 9 Bracket Mtg. Screw 304SST Switch Mtg. Screw 304SST * Indicates recommended spare parts ** Collar Pin #733 and Piston Connector Nut #762 not shown, only for Hydraulic. † Denotes wetted parts CAUTION When a Strahman adapter is not supplied with the drain valve, or the customer’s nozzle does not have a piloting recess, the nozzle bore must be ¼” larger than the piston diameter. This clearance prevents the piston from scoring on the inside of the nozzle which 3” and Larger Valve Body Deck could cause the valve to leak. www.strahmanvalves.com...
  • Page 10 6” * Strahman piston extensions are measured from the height of the RF for an ANSI standard flange. For ANSI 600 class valves the extension is equal to the actual RF provided by Strahman. For ANSI 150 and 300 class valves the ANSI standard RF height is ”...
  • Page 11 Valve Body Deck Reducer Mtg.Stud 304SST Reducer Mtg. Nut 316SST Reducer Mtg, Washer 304SST Safety Shield 304SST CAUTION Safety Shield Screw 304SST When a Strahman adapter is not supplied with the Safety Shield Washer 304SST drain valve, or the customer’s nozzle does not have Stem Coupling a piloting recess, the nozzle bore must be ¼” larger Insert Bronze than the piston diameter. This clearance prevents the piston from scoring on the inside of the nozzle * Denotes recommended spare parts which could cause the valve to leak. † Denotes wetted parts...
  • Page 12 6” * Strahman piston extensions are measured from the height of the RF for an ANSI standard flange. For ANSI 600 class valves the extension is equal to the actual RF provided by Strahman. For ANSI 150 and 300 class valves the ANSI standard RF height is ”...
  • Page 13 304SST Cage Lock Gasket* Rotork Actuator Rotork Mtg. Stud 304SST Rotork Mtg. Nut 316SST Stem Washer 302SST Stem Nut 304SST * Denotes recommended spare parts † Denotes wetted parts Rotork Operated Drain Valve CAUTION When a Strahman adapter is not supplied with the drain valve, or the customer’s nozzle does not have a piloting recess, the nozzle bore must be ¼” larger than the piston diameter. This clearance prevents the piston from scoring on the inside of the nozzle which 3” and Larger Valve Body Deck could cause the valve to leak. www.strahmanvalves.com...
  • Page 14 ” height) the distance measured from the RF to the tip of the piston will be ⅛” less than the description. Example: 2” ANSI 150 Drain Valve with 6” piston extension will measure 5 ⅞” from a standard Strahman RF to the tip of the piston. Piston extension tolerances tighter than ⅛” available upon request.
  • Page 15 ” 5.967” ” 10.632” 16 ½” ” Nozzle Drilling: ANSI standard, bolt holes straddle centerlines. For nozzles with sampling valves contact Strahman direct. Adapter Drilling: ANSI standard, bolt holes straddle centerlines. For adapters with sampling valves contact Strahman direct. www.strahmanvalves.com...
  • Page 16 4” - DIN100 • C ombinations of fabricated, sand and investment 5” - DIN125 castings, and bar stock available 6” - DIN150 SuRFACE FINISH 8” - DIN200 10” - DIN250 • F or polymer applications, Strahman recommends 12” - DIN300 a surface finish of 300 (Ra 0.4) for all parts are in contact with the medium 14” - DIN350 16” - DIN400 QuALITy ASSuRANCE AND TESTING 18” - DIN450 • I SO 9001 compliant 20”...
  • Page 17 Piston is seal-less to Piston is seat-less to maximize self-cleaning design maximize self-cleaning Strahman bodies are designed design Strahman bodies are to allow full bore with a high designed to allow full bore rigidity lantern with a high rigidity lantern Standard branch angle: 45° & 60° Standard branch angle: 45°, 90°, and other 60°, 90° and other specific...
  • Page 18 SERIES VL, cUSTOm mADE RANGE bODy ARRANGEmENTS bODy ARRANGEmENTS The Strahman VL series uses the following two stem designs: Strahman has two Soft Seal Piston Valve styles available: • Figure 020 for small piston sizes to approximately 25 mm (1”) uses a rising stem design • Figure 025 for piston sizes 32 mm and larger uses a non-rising stem design Figure 020 for smaller and utilize a rising stem design. • Figure 025 for large sizes use a non-rising stems to minimize overall length.
  • Page 19 « D » (inside diameter), « h » (height), DN (nominal size), pN (pressure rating) and connection standard (ISO, ANSI, DIN, etc.). To eliminate retention areas radius « R » can be specified for optional contouring. For new projects Strahman can supply valves with easy-to-fit standardized pads that are ready to be installed.
  • Page 20 SERIES VL, cUSTOm mADE RANGE pAcKING DEFINITION pAcKING DEFINITION pAcKING DEFINITION Typical Packing Materials: Typical Packing Materials: • PTFE • PTFE • PTFE / Aramide Braid • PTFE / Aramide Braid Live loaded packing • Carbon / Graphite Braid Live loaded packing •...
  • Page 21 • contact with the medium For polymer applications, Strahman recommends a surface finish of 300 (Ra 0.4) for all parts are in contact with the medium Quality assurance & testing Quality assurance & testing • ISO 9001 compliant • TUV / HPO / TA Luft Quality assurance &...
  • Page 22 Combinations of fabricated, sand and investment casings, and bar stock available SERIES VL, cUSTOm mADE RANGE pISTON LOcKING DEVIcE Surface Finish • For polymer applications, Strahman recommends a surface finish of 300 (Ra 0.4) for all parts are in Often times safety regulations require an additional locking device to keep a valve contact with the medium closed. Strahman provides three different arrangements. Quality assurance & testing •...
  • Page 23 5. A fter draining the tank, the ram valve can be closed. The piston extends mULTI-pOSITION & bOTTOm VESSEL SAmpLING through the insert ring/flange and into the tank removing all material. Step 1 Step 2 Strahman Soft Seal Valves allow the valve Valve is closed and flush with Valve is raised to Piston is raised to Valve is closed and piston to operate in multiple positions while main-...

  • Page 24: Corporate Headquarters

    The Strahman family of products include: S A M P L I N G V A L V E S Strahman has a full line of sampling valves that produce live samples without exception. Our sampling valves unique designs prevent failure caused by sediment or clogging. D R A I N V A L V E S Strahman Drain Valves are designed to prevent clogging. They are ideal for use in liquid and gas service or with slurries, polymers, and high viscosity fluids that tend to solidify at room temperature. W A S H D O W N E Q u I P M E N T Strahman offers a full line of mixing units, hose stations, hoses, nozzles and wash down accessories. Our wash down line is designed for industrial use and is used in a wide variety of industries including food, beverage, pharmaceutical, chemical and other applications. L I N E B L I N DS Strahman Line Blinds provide zero leakage down stream and total isolation on process pipelines, vessels and maritime applications. No pipeline movement is required when blind position is changed. Please contact your local Strahman representative for further details or visit our website: www.strahmanvalves.com VALVES, INC. E s t a b l i s h e d 1 9 2 1 w w w . s t r a h m a n v a l v e s . c o m Corporate Headquarters: Strahman Valves, Inc. 2801 Baglyos Circle, Bethlehem, PA 18020 uSA...

This manual is also suitable for:

Vl series