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Process GaugesDiaphragm SealsAccessoriesSpecialty Gauges

SPECIALTY GAUGE INTRODUCTIONThis Specialty Gauge Catalog illustrates and descibes the various pressure gauges available fromWeiss Instruments in Solid Front (Safety), Solid Back Liquid Filled or Dry configuration. Thesegauges ideally suit the requirements of the Process, Industrial, Power and Chemical Industriesand are available with Phosphor Bronze/Brass, 316 Stainless Steel or Monel internals.Gauge accessories such as: Siphons, Snubbers, Gauge Cocks, Needle Valves, Ball Valves andDiaphragm Seals (to prevent corrosion or clogging of Gauges) are also illustrated.OPERATING CONDITIONSConditions which a pressure gauge will be subjected to are a major factor in choosing the correctindicator for each application. The following points are offered as a guide for the proper selection. Where vibration and pulsation exist, the liquid filled type may be better suited. Gauge range should be twice that of the operating range. Additional information can be obtainedby reading Pressure Gauge Standard ANSI/ASME B40.1. Liquid filled ambient temperature limits – Glycerine 0 150 F / Silicone 50 0 150 F Non filled gauges can withstand continuous service temperatures as high as 300 F, however,excess operating temperatures should be avoided whenever possible since mid scale accuracywill be affected by approximately 1% per 100 F ambient temperature change. Non filled gauges with stainless steel components and welded joints will withstand higher tempera tures for short periods of time, although other internals may be damaged and calibrationpermanently affected. For highly corrosive and/or viscous process media a diaphragm seal may be appropriate toisolate the gauge. Refer to page 11.TO SPECIFYOrdering Information, see pages 7&81) Catalog NumberDial Size Series4 41/2"6 6"8 81/2"AG AltitudeBG BellowsDG DifferentialMG AmmoniaPG PressureUG UltraRG RefrigerationTP Duplex Case StyleB Aluminum,Back FlangeN Aluminum w/o FlangeE Phenolic TurretF Aluminum,Front Flange Internal Material1 Bronze2 316 S.S.5 Monel2) Dial Range See page 9 for available Ranges3) NPT Size 1/4" or 1/2"4) Location of Connection Lower Mount (LM) or Lower Back Mount (LBM)Ex: 6UGB 2 0 100psi 1/4"LMWARNING: To prevent misapplication, media and ambient operating conditions should be considered when selecting pressure gauges. Improper gauge application can bedetrimental, causing failure and possible property damage or personal injury. Additional information can be obtained by reading Pressure Gauge Standard ANSI/ASME B 40.1,available from the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th St., New york, NY 10017.

41/2”Process Pressure GaugesMOVEMENT Bushed Stainless Steel RotaryDIAL White Aluminum, Black MarkingsPOINTER Black Aluminum, Micrometer AdjustableCASE Black Fiberglass Reinforced Thermoplastic(Pocan)RING Reinforced PolypropyleneWINDOW AcrylicGASKETS Buna NACCURACY 0.5% ASME B40.1 Grade 2ACONNECTIONS Lower 1/4" or 1/2" NPTLower Back 1/4" or 1/2"NPT(applies to Y2 and Y5 versions)CONSTRUCTIONDRYDRYDRYLIQUID FILLEDLIQUID FILLEDLIQUID FILLEDA*SOCKETBRASS316L S.S.MONELBRASS316L S.S.MONELCB1mm128103in5.04.061A* Nominal Size.A*JKTUBEBRONZE316L S.S.MONELBRONZE316L S.S.MONELMNRSCAT 9.491/2"0.871 Gauges with 1/4" NPT connection – dimension changes to 97mm (3.81 in.).CDJLMNRST .314.74.2481.125.835.37.99.491/2"0.87A* Nominal Size.1 Gauges with 1/4" NPT connection – dimension changes to 43.5mm (1.71in.).3

STANDARD RANGESProcess Pressure GaugesPRESSURE – DUAL SCALESVACUUM – DUAL SCALESCOMPOUND – DUAL SCALES4

ULTRA PRESSURE GAUGESSolid Back ConstructionSERIES UG 1SOCKET BrassBOURDON TUBE Phosphor Bronze C Tube to1000 psiCONNECTING JOINTS Silver BrazedMOVEMENT Bushed Stainless Steel RotaryDIAL White Aluminum, Black MarkingsPOINTER Black Aluminum, Micrometer AdjustableWINDOW GlassACCURACY 0.5% ASME B40.1 Grade 2ACONNECTIONS 1/4" or 1/2" NPT, Lower orLower BackAvailable Dial Sizes41/2" Bottom Conn.41/2" Lower Back Conn.6" Bottom & Back Conn.6" Lower Back Conn.81/2" Bottom or Lower BackCase StylesB, NFBFBSERIES UG 2SOCKET 316 Stainless SteelBOURDON TUBE 316 S.S. C Tube to 1000 psiCoiled Tube 1500 psi to 10,000 psiCONNECTING JOINTS WeldedMOVEMENT Bushed Stainless Steel RotaryDIAL White Aluminum, Black MarkingsPOINTER Black Aluminum, Micrometer AdjustableWINDOW GlassACCURACY 0.5% ASME B40.1 Grade 2ACONNECTIONS 1/4" or 1/2" NPT, Lower orLower BackAvailable Dial Sizes41/2" Bottom Conn.41/2" Lower Back Conn.6" Bottom & Back Conn.6" Lower Back Conn.81/2" Bottom or Lower BackCase StylesB, NFBFB5

PRESSURE GAUGESSolid Back ConstructionSERIES PG 1SOCKET BrassBOURDON TUBE Phosphor Bronze C Tube to1000 psiCONNECTING JOINTS Silver BrazedMOVEMENT Bushed Brass RotaryDIAL White Aluminum, Black MarkingsPOINTER Black Aluminum, Slotted AdjustableWINDOW GlassACCURACY 1.0% ASME B40.1 Grade 1ACONNECTIONS 1/4" or 1/2" NPT, Lower orLower BackAvailable Dial Sizes41/2" Bottom Conn.41/2" Lower Back Conn.6" Bottom & Back Conn.6" Lower Back Conn.81/2" Bottom or Lower BackCase StylesB, NFBFBOptional Gauge FeaturesFlush Mounting RingPlastic LensLazy Hand AssemblySafety Glass Lens6Red Set HandBladder for Liquid Fill Kit

SPECIAL APPLICATION GAUGESDIFFERENTIAL GAUGES SERIES DG 1*Measures the difference between two independentpressure sources.FEATURES:Brass Sockets Phosphor Bronze Tubes.1.0% Accuracy ASME B40.1 Grade 1AWhite Aluminum Dial with Black MarkingsSlotted Adjustable PointerConnection 1/4" and 1/2"Available Dial Sizes41/2" Bottom Conn.6" Bottom Conn.Shown with B CaseCase StylesBB* See pertinent data in available Range Table on page 9.DUPLEX GAUGES SERIES TP 1Measures two related pressures on the same dial.Top pointer is orange and the bottom pointer isblack.FEATURES:Brass Sockets Phosphor Bronze Tubes.1.0% Accuracy ASME B40.1 Grade 1AWhite Aluminum Dial with Black MarkingsPointer Black Aluminum, Micrometer AdjustableConnection 1/4" and 1/2"Available Dial SizesShown with B Case41/2" Bottom Conn.Case StylesBBELLOWS GAUGES SERIES BG 1**Sensitive bellows element for accurate measure ment of pressures below 15 psi.FEATURES:Brass Socket Phosphor Bronze Bellows.1.0% Accuracy ASME B40.1 Grade 1AWhite Aluminum Dial with Black MarkingsSlotted Adjustable PointerConnection 1/4" and 1/2"Shown with E CaseAvailable Dial SizesCase Styles41/2" Bottom Conn.E** Also available with 316 S.S. bellows and socket, Series BG 2.7

ALTITUDE GAUGES SERIES AG 1Reads in both altitude and psi to indicate height ofwater in tanks (red set pointer provided).FEATURES:Brass Socket Phosphor Bronze Tube.1.0% Accuracy ASME B40.1 Grade 1AWhite Aluminum Dial with Black MarkingsSlotted Adjustable PointerConnection 1/4" and 1/2"Available Dial Sizes41/2" Bottom Conn.Case StylesB, NShown with B CaseREFRIGERATION GAUGES SERIES RG 1Reads in both psi and corresponding refrigeranttemperature. For R12, R22 and R502FEATURES:Brass Socket Phosphor Bronze Tube.1.0% Accuracy ASME B40.1 Grade 1AWhite Aluminum Dial with Black MarkingsSlotted Adjustable PointerConnection 1/4" and 1/2"Available Dial Sizes41/2" Bottom Conn.Case StylesB, NShown with N CaseAMMONIA GAUGES SERIES MG 2Reads in both psi and corresponding ammoniatemperature.FEATURES:Stainless Steel Socket and Tube.1.0% Accuracy ASME B40.1 Grade 1AWhite Aluminum Dial with Black MarkingsSlotted Adjustable PointerConnection 1/4" and 1/2"Available Dial Sizes41/2" Bottom Conn.Shown with B Case8Case StylesB, N

STANDARD RANGESSERIESBG 1BG 2SERIESUG 1UG 2PG 1TP 1*Not available in BG 2SERIESRG 1Temperature Scale R12, R22,R502SERIESMG 2SERIESDG 1SERIESAG 1* Differential Pressure Gauges measure the difference9between two separate pressure sources. Dial with "O"at the top center indicates the amount one pressure sourcei s h i gher than the other. Dial with "O" at the left side in dicates the Differential between high and low pressure.

CASE DIMENSIONSSTYLE E For Wall, Panel or Direct MountingSTYLE F Black Aluminum with Hinged RingFront FlangeX Panel Hole cut out diameter.STYLE B Black Aluminum Case & Twist RingBack FlangeSTYLE N Black Aluminum Case & Twist RingNo Flange10

DIAPHRAGM SEALSThe Weiss line of Diaphragm Seals, in conjunction with Weiss pressure indicators, offers instrumentationthat’s rugged and carefully calibrated to withstand the most severe industrial, process or OEM service.Our diaphragm seals are available in a variety of metal housing materials and process connection sizesto fit most requirements.Series DS/DV/DTMax. Pressure/Temperature Limits: Vacuum thru 2300 psi to 100 F,1500psi to 200 F, 600 psi to 400 F.Top Housing: 1/4" or 1/ 2" NPT (304 S.S. standard)Diaphragm: 316 L S.S. welded, Viton* or Teflon**Nuts and Bolts: Stainless SteelLower Housing: 1/4" thru 1" NPT* Viton is furnished for Vacuum, 30 psi and Compound 30 0 15 psi ranges.** Teflon is available for ranges to 200 psi.Ranges 0 30” HG, 30 0 15 psi, 30 0 30 psi. Silicone Filling only.Ordering Code: DS A DV B C D DTA. Top Connection25 1/4" NPT50 1/2" NPTDS 316 SSDV VitonDT TeflonEx: 25 DS12 50B. Flushing/No Flushing0 No flushing conn.1 Flushing conn.C. Lower Housing Mat'l2 316 SSLIQUID FILLINGS: Food Grade Glycerine Silicone DC200D. Process Conn.25 1/4" NPT50 1/2" NPT75 3/4" NPT10 1" NPTThe Series MD/MN is a compact, lightweight, economical diaphragm seal. The upper and lower housing,as well as the diaphragm, are type 316 stainless steel all welded together making a one piece integralunit, ideally suited for those applications where space is a factor.The use of a hermetically sealed, liquid filled pressure gauge in conjunction with either a MD or MN sealprotects the indicating gauge from both the process medium and atmospheric conditions, as well asreduces pointer fluctuations due to vibration and pulsation.Series MDSeries MNOpr. Pressure : 60 psi thru 1000 psi(minimum scale range 0 100 psi)Temperature Limits: 5 to 300 FTop Connection: 1/4" or 1/ 2" NPTProcess Connection: 1/4",1/2" or3/4" NPTOrdering Code: MDN2 BAEx: 25 MDN2 50Opr. Pressure : 100 psi thru 1000 psi(minimum scale range 0 200 psi)Temperature Limits: 5 to 300 FTop Connection: 1/4" NPTProcess Connection:1/4" or 1/2" NPTA. Top Connection25 1/4" NP50 1/2" NPTOrdering Code: 25 MNN2 XEx: 25 MNN2 25X. Process Connection25 1/4" NPT50 1/2" NPTB. Process Conn.25 1/4" NPT50 1/2" NPT75 3/4" NPTREMOTE MOUNTING: Stainless Steel Plain Seamless or Armored Capillary with Stainless Steel Fittings can be provided for remote mounted applications.Fittings are available in 1/4" or 1/2" NPT.11

GAUGE ACCESSORIESFORGED BRASS COCKSCAT. NO.BTC-14SIZE1/4" NPTF x 1/4" NPTFMATERIALBrassRATING200 psi HydraulicSIZE1/4" NPTF x 1/4" NPTF1/4" NPTF x 1/4" NPTM1/4" NPTF x 1/4" NPTF1/2" NPTF x 1/2" NPTFMATERIALBrassBrassBrassBrassRATING200 psi Hydraulic200 psi Hydraulic200 psi Hydraulic200 psi HydraulicSIZE1/4" NPTF X 1/4" NPTF1/4" NPTF X 1/4" NPTFMATERIALBrass304S.S.RATING600 psi & 300 F4000 psi & 150 FSIZE1/4" NPTM x 1/4" NPTM1/4" NPTM x 1/4" NPTM1/4" NPTM x 1/4" NPTM1/4" NPTM x 1/4" NPTM1/4" NPTM x 1/4" NPTM1/4" NPTM x 1/4" NPTMMATERIALIronBrass304SS316SSIron (Angle)Brass (Angle)BRASS GAUGE COCKSCAT. NO.TC-14MTC-14LC-14LC-12NEEDLE VALVESCAT. NO.25NVBR25NVSSSYPHONSCAT. ATING300 psi & 300 F400 psi & 300 F430 psi & 800 F450 psi & 800 F300 psi & 300 F400 psi & 300 FAll Syphons Schedule 40. Schedule 80 available on request.PRESSURE SNUBBERSCAT. NO.PSN-B-25PSN-B-50PSN-S-25PSN-S-50DESCRIPTION1/4" NPT1/2" NPT1/4" NPT1/2" NPTMATERIALBrassBrass303S.S.303S.S.PSI RATING AT 70 F1,500 psi1,500 psi1,500 psi1,500 psiCHROME PLATED BRASS BALL VALVESCAT. NO.BV25MBV25BV50SIZE1/4" NPTF x 1/4" NPTF1/4" NPTF x 1/4" NPTM1/2" NPTF x 1/2" NPTFMATERIALChrome Plated BrassChrome Plated BrassChrome Plated BrassRATING450 psi & 250 F450 psi & 250 F450 psi & 250 FWEISS INSTRUMENTS, INC.905 WAVERLYAVE., HOLTSVILLE, NY 11742TEL: 631-207-1200 FAX: 631.207.0900www.weissinstruments.comOld World Craftsmanship . . . . New World TechnologySince 1882 Celebrating 128 Years

1.0% Accuracy ASME B40.1 Grade 1A White Aluminum Dial with Black Markings Slotted Adjustable Pointer Connection 1/4" and 1/2" Available Dial Sizes Case Styles 41/2"Bottom Conn. B, N REFRIGERATION GAUGES SERIES RG 1 Reads in both psi and corresponding refrigerant temperature. For R12, R22 and R502 FEATURES: Brass Socket Phosphor Bronze Tube. 1.0% Accuracy ASME B40.1