FILTER TYPE PRESSURE SNUBBER

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2 FILTER TYPE PRESSURE SNUBBER Pressure oscillations and other sudden pressure changes can affect the delicate mechanisms of a pressure gauge or pressure transmitter. This can result in either complete failure of the instrument or false and inaccurate readings. Pressure snubbers are designed to reduce or prevent these oscillations and fluctuations from reaching and affecting pressure instruments. Pressure snubbers reduce pressure spikes only; a pressure snubber will not eliminate any prolonged overpressure. Spikes last for milliseconds only, over pressures lasting longer than that can damage the pressure sensor. The pressure snubbers below are the filter type using a porous filter media made of sintered metal. Because the filter element is a fine mesh type, it should be used on processes that do not contain particulate or sludge that would clog the element. In the event that the snubber does get clogged, our snubbers can be disassembled for cleaning if necessary. SPECIFICATIONS: Connection Sizes: 1/4" or 1/2"NPT Stainless Steel or Brass Water, Air, Oil or Gas No Moving Parts Nothing to break or wear out Pressure Rating: Brass: 3,000 PSI Stainless Steel: 10,000 PSI Snubber Body Retaining Screw Snubber Element Gauge Connection Brass or 316 SS Brass or 316 SS Brass or 316 SS ½ or ¼ NPT Female Process Connection ½ or ¼ NPT Male A (Inches) B (Inches) A (MM) B (MM) 1/4"NPT mm 35mm 1/2"NPT mm 44mm Other Instrument protection accessories: Piston Type Snubber Adjustable Snubber Needle Valve Pressure Limiting Valve Page 73

3 ADJUSTABLE PRESSURE SNUBBER SNUBBER Fully field adjustable In stock for immediate delivery Choice of Brass or Stainless Steel FEATURES AND BENEFITS Pressure Pulsation Dampener Adjustable Dampening Protects pressure gauges against pressure spikes, surges, and fluid hammers. Can isolate the gauge for service or replacement. Available in both Stainless Steel and Brass in 1/4", 3/8", and 1/2" NPT connection sizes. Fine thread adjustable valve allows user to fine tune harmful harmonic vibration from fluid systems Precision ball affords shock protection during pressure spikes or fluid hammer conditions. Most economical "life insurance" for instrumentation reliability. Simple, Clever, Economical Part No. MSB4 MSS4 MSB6 MSS6 MSB8 MSS8 Body Material Brass SS Brass SS Brass SS "A" Thd. Size "B" "C" "D" Hex 1/4-18NPT 1/4-18NPT 3/8-18NPT 3/8-18NPT 1/2-1/4-NPT 1/2-14--NPT.51 (13mm).51 (13mm).59 (16mm).59 (16 mm.79 (20mm).79 (20mm) 1.77 (45mm) 1.77 (45mm) 2.36 (60 mm) 2.36 (60 mm) 2.36 (60mm) 2.36 (60mm).67 (17mm).67 (17mm) 1.18 (30mm) 1.18 (30mm) 1.18 (30mm) 1.18 (30mm) Maximum Pressure 3,000 PSI 5,000 PSI 5,000 PSI 10,000 PSI 5,000 PSI 10,000 PSI Page 74

4 PISTON TYPE PRESSURE SNUBBER While each model is built to exacting specifications with tolerances to ten-thousandths of an inch, the unit-to-unit uniformity and easy piston changing makes installing a piston type Snubber into your system a smart choice. Center Body Snubbers MODEL NO. CONNECTIONS INLET MODEL 010 OUTLET BODY MATERIAL 010B Brass S 1/4 NPT 1/4 NPT 303 Stainless 5000 MAX PSI LN. HEX SS 316 Stainless 5000 Available in British Taper Pipe Threads. Add BSP to part number when ordering. MODEL 050 CONNECTIONS MODEL NO. BODY MTRL MAX PSI LN. HEX INLET OUTLET 050B 3/8 NPT 3/8 NPT Brass Available in British Taper Pipe Threads. Add BSP to part number when ordering. MODEL 060 MODEL NO. CONNECTIONS INLET OUTLET BODY MTRL MAX PSI LN. HEX 060B Brass S 1/2 NPT 1/2 NPT 303 Stainless SS 316 Stainless Available in British Taper Pipe Threads. Add BSP to part number when ordering. Page 75

5 PRESSURE LIMITING VALVE ADVANTAGES : PREVENT DAMAGE TO GAUGE / INSTRUMENTS DUE TO SUDDEN PRESSURE SURGE 316SS CONSTRUCTION COMPACT DESIGN AUTOMATIC POSITIVE ACTION IN LINE INSTALLATION REPEATABLE PEFORMANCE MAXIMUM WORKING PRESSURE 6,000 PSI Part Numbering System PLV = PRESSURE LIMITING VALVE 4 = ¼ NPT 2 = ½ NPT M = MALE NPT THREAD F = FEMALE NPT THREAD RANGE = SEE BELOW Example: PLV-2F-2F- 1 SET: 80PSI Available Configurations PLV ½ male ½ male 6,000 PSI PLV ½ male ½ female 6,000 PSI PLV ½ female ½ female 6,000 PSI PLV ¼ female ¼ female 6,000 PSI PLV ¼ male ¼ male 6,000 PSI PLV ¼ male ¼ female 6,000 PSI TECHNICAL FEATURES: Available Ranges RANGE Adjustment Span in PSI 1 50 to 120 PSI 2 80 to 180 PSI to 300 PSI to 600 PSI to 1000 PSI to 1800 PSI to 3000 PSI to 6000 PSI PIC Pressure Limiting Valves are also called over-load protectors or gauge savers. The PLV cuts off pressure rising above the desired pressure value (pre-set value) thus preventing failure of pressure gauge or instruments and also stops possible damages such as hazardous leakages and explosions etc. The Pressure Limiting Valve or gauge saver shuts off the system with quick and positive action of built in push-rod device. As and when, the pressure falls below the pre-set pressure value, the line and/or the pressure gauge will be automatically put into operation again. The PLV is of extreme importance and necessity for the protection of the pressure sensitive instruments against over pressures, sudden line induced pressure surges which are principal causes of the instrument and subsequent system failure. The PLV can be supplied to function at different cut-off pressure values on special request. The repeat accuracy of the unit depends on the rate of pressure rise. However, an accuracy of ± 10% of the set pressure may be expected. Page 77

6 Syphon (Pigtail) Pigtail Siphons are typically used to act as a cooling or warming leg for applications where the process temperature is higher or lower than the normal working temperature range as specified by NIST B40.1 in relation to instrumentation. Temperature extremes can cause inaccuracy or shorten the life span of instruments not specifically designed for severe duty applications. STRAIGHT ANGLE Part No. Description Pressure Temperature A03B ¼ NPT Brass Pigtail 250PSI 400 F A031 ¼ NPT Iron Pigtail, Schedule 40 Iron 500PSI 400 F CPS4 ¼ NPT Steel Pigtail, Schedule 80 Steel 1000PSI 850 F CPS2 ½ NPT Steel Pigtail 1000PSI 850 F CPSS4 ¼ NPT Stainless Steel Pigtail 2000PSI 1000 F CPSS2 ½ NPT Stainless Steel Pigtail 2000PSI 1000 F

7 COOLING TOWER Temperature Affects Pressure Gauges: Mechanical pressure gauges are typically designed and calibrated to be most accurate and durable in ambient conditions between 65 and 85 F, with process temperatures not exceeding 150 F. If required, gauges can be ordered - calibrated to be most accurate for specific temperature ranges (within certain limits) Outside of the normal working conditions temperature can affect the accuracy and lifespan of gauges. Precautions should be taken to ensure that pressure gauges are not continuously exposed to temperature extremes. Good gauge practices have always recommended pigtail siphons (a) for steam or other high temperature applications. Other optional preventative measures include capillary (b) to remote mount the gauge away from the process or cooling towers to dissipate heat from the process fluid before it enters the gauge. This can also be true for low temperature extremes such as cryogenic applications. Other methods for protecting instruments from temperature extremes: (a) Pigtail Siphon ( b) Capillary Page 76

8 TEST PORT PLUGS Piping System Test Plugs These test ports are designed for permanent installation into piping system for quick access during maintenance checks. With gauge adapters for pressure tests or pocket thermometer insertion without shutting down or draining the system. Available with Nordel or Neoprene Cores, Brass or Stainless Steel bodies in 1/8 NPT through 1/2 NPT Model Number Nominal Size (in) OAL (in) Material Pressure/ Temperature Lower Connection (in) Body Hex (in) Cap Hex (in) Core Material PLUG-1/8 1/8 NPT 1-1/4 Brass 200F/1000PSI 1/8 NPT 13/16 9/16 Neoprene PLUG-1/4 1/4 NPT 1-1/2 Brass 200F/1000PSI 1/4 NPT 1-1/16 1-1/2 Neoprene PLUG-3/8 3/8 NPT 1-1/2 Brass 200F/1000PSI 3/8 NPT 1-1/16 1-1/2 Neoprene PLUG-1/2 1/2 NPT 1-1/2 Brass 200F/1000PSI 1/2 NPT 1-1/16 1-1/2 Neoprene PLUG-1/4SS 1/4 NPT 1-1/2 SS F/1000PSI 1/4 NPT 1-1/16 1-1/2 Neoprene PLUG-1/2SS 1/2 NPT 1-1/2 SS F/1000PSI 1/2 NPT 1-1/16 1-1/2 Neoprene Pressure & Temperature Test Plugs Acessories PCR Plastic Cap Retainer - Available for all test plugs ADAPTER-PP-1/4 1/4" Gauge Adaptor 2-3/4" OAL x 1-3/4" x 0.063" probe ADAPTER-PP-1/2 1/2" Gauge Adaptor 2-3/4" OAL x 1-3/4" x 0.125" probe PG Probe guard for all gauge adapters Page 72