PS-3400 SERIES Regulators - Pressure Reducing For other materials or modifications, please consult TESCOM. OPERATING PARAMETERS Pressure rating per criteria of ANSI/ASME B31.3 Maximum Inlet Pressure 3000 psig / 207 bar Outlet Pressure Ranges 0-25, 0-50, 0-100 and 0-150 psig   0-1.7, 0-3.4, 0-6.9 and 0-10.3 bar Design Proof Pressure 150% maximum rated Leakage Internal: Bubble-tight External: Design to meet < 2 x 10-8 atm cc/sec He Operating Temperature -40°F to 140°F / -40°C to 60°C Flow Capacity Cv = 0.05 Maximum Operating Torque   30 inch-lbs / 3.4 N•m MEDIA CONTACT MATERIALS Body   316 Stainless Steel Bonnet   316 Stainless Steel Diaphragm   316 Stainless Steel Seat PCTFE (1st stage), PFA (2nd stage) Friction Sleeves Outer: 316 Stainless Steel Inner: PTFE Remaining Parts 316 Stainless Steel OTHER Connections   1/4" NPTF Cleaning   CGA 4.1 and ASTM G93 TESCOM PS-3400 Series is a compact high purity two-stage cylinder regulator with tied diaphragms for low flows of toxic, flammable and pyrophoric gases. Diffusion-resistant metal diaphragm seal ensures gas purity and integrity. Application • For toxic, corrosive and pyrophoric cylinder gases Features and Benefits • Excellent decaying inlet characteristic: 0.06/100 psig or 0.004/6.9 bar inlet change • Positive seal design • Captured bonnet ports • Both diaphragms are convoluted for greater accuracy and sensitivity • Metal-to-metal diaphragm to body seal to minimize diffusion • Diaphragm-to-valve link enhances seat sealing integrity Weight (without gauges) 3 lbs / 1.4 kg NOTE: When choosing a regulator and control pressure, decaying inlet characteristic must be considered when the supply pressure is expected to change. The decaying inlet characteristic of a pressure reducing regulator is commonly known as the increase in control pressure due to the decrease in supply pressure. It is important to make sure this effect does not cause the control pressure to exceed the pressure rating of the unit’s outlet or that of the downstream system. For more information on decaying inlet, please refer to the Technical Information section of the product catalog and/or contact the TESCOM customer support further assistance. Visit our website at emerson.com o

PS-3400 SERIES PS-3400 Series Regulator Drawing OUTLET GAUGE INLET GAUGE INTERSTAGE RELIEF PORT 2.27 58 CONTROL KNOB PANEL (REF.) .25 MAX. THK. WITH 1 PANEL NUT ORDER PANEL NUTS SEPARATELY, P/N 8686-1. 1/16 NPTF (RANDOM ORIENTATION) 2ND STAGE LOAD SPRING CONVOLUTED 316 SST WELDED DIAPHRAGM TIED VALVE STEM INTERSTAGE PRESSURE 90O FROM VIEW 2ND STAGE MAIN VALVE 1ST STAGE MAIN VALVE CONVOLUTED 316 SST WELDED DIAPHRAGM TIED VALVE STEM 1ST STAGE LOAD SPRING All dimensions are reference & nominal Metric [millimeter] equivalents are in brackets Visit our website at emerson.com or contact us at (800)...

PS-3400 SERIES PS-3400 Series Regulator Flow Chart For more information on how to read flow curves, please refer to the Flow Curves and Calculations document (debul2007x012) in the TESCOM catalog or on www.tescom.com. OUTLET PRESSURE - psig [bar] FLOW RATE - SCFM [SLPM] Nitrogen Visit our website at emerson.com or contact us at (800) 447-1250

PS-3400 SERIES PS-3400 Series Regulator Part Number Selector Repair Kits, Accessories & Modifications may be available for this product. Please contact TESCOM for more information. Example for selecting a part number: PS34 BASIC SERIES BODY MATERIAL OUTLET PRESSURE RANGES INLET AND OUTLET PORT TYPE INLET AND OUTLET PORT SIZE Visit our website at emerson.com or contact us at (80