BULLETIN 725.2 October 2001 Goulds Model 3996 In-Line Process Pumps

Goulds Model 3996 In-Line Process Pumps Designed for Total Range of Industry Services n Capacities to 1400 GPM (318 m3/h) n Heads to 700 feet (213 m) n Temperatures to 500° F (260° C) n Pressures to 375 PSIG (2586 kPa) Performance Features for In-Line Services Extended Pump Life • Integral pump bearings • TaperBore™Plus/BigBore™ seal chambers • Precision fits for accurate alignment • Flexibly coupled Ease of Maintenance • In-line mounting • Field alignment not required • Back pull-out design • External impeller adjustment Safety • ANSI B15.1 coupling guard • Ductile iron frame and motor support...

3 4 Gutter Fold Model 3996 In-Line Process Pumps Heavy Duty Design Features for a Wide Range of Process Services FIELD ALIGNMENT NOT REQUIRED Precision rabbet locks provide positive, built-in alignment between pump and motor. FLEXIBLY COUPLED Conventional flexible spacer coupling. CONTINUOUS HIGH PERFORMANCE Original high efficiency, maintained by simple external adjustment resulting in longterm energy savings. MAXIMUM INTERCHANGEABILITY All parts (shaft, sleeve, mechanical seals, etc.) except casing are fully interchangeable with Goulds Model 3196 STX and MTX. HEAVY DUTY SHAFT Shaft designed...

5 In-Line Design For Cost Savings In-line pumps have become increasingly popular with users due to minimal floor space required and reduced installation costs. Installation is simple since the unit is mounted directly in the line like a valve. Field alignment is not required and the unit is not subject to misalignment due to pipe strain or temperature changes. Goulds 3996...The Preferred In-Line Design Setting The Standards For Reliability A variety of in-line pumps are available including closecoupled, rigid-coupled, and flexibly-coupled/integral bearing designs. Only the flexibly-coupled design...

Material Item Ductile Hastelloy Number Part Name Iron 316SS CD4MCu Alloy 20 Monel Nickel B & C Titanium 100 Casing Ductile Iron 316SS CD4MCu Alloy 20 Monel Nickel Hastelloy Titanium 101 Impeller Ductile Iron 316SS CD4MCu Alloy 20 Monel Nickel Hastelloy Titanium 105 Lantern Ring Glass-Filled Teflon* 106 Stuffing Box Packing Teflon* Impregnated Fibers 112 Thrust Bearing Double Row Angular Contact 119 Bearing End Cover Steel 122 Shaft—Less Sleeve (Optional) SAE4140 316SS Alloy 20 Monel Nickel Hastelloy Titanium 122 Shaft—With Sleeve SAE4140 316SS 126 Shaft Sleeve 316SS Alloy 20 Monel Nickel Hastelloy...

Sectional View Model 3996 7 136 496 228 168 333A 126 265A 370 184M 351 240 332A 112 122 119 250 100 412A 101 Dynamic Seal For Elimination of Sealing Problems—Reduced Maintenance Costs STUFFING BOX COVER REPELLER Besides being available as a complete unit, any Goulds 3996 can be easily field-converted to Dynamic Seal. Retrofit kits are readily available. On tough pumping services, especially corrosives and slurries, mechanical seals require outside flush and constant, costly attention. Even then, seal failures are common, resulting in downtime. Goulds offers the ANSI PLUSTM Dynamic Seal which,...

9 Goulds engineered seal chambers are designed to accept a wide range of sealing arrangements to meet specific user requirements. Your Goulds representative will gladly recommend the best sealing solution for your service...some of which are illustrated here. 10% Black SINGLE INSIDE SEAL (with BigBoreTM Seal Chamber) • Non-corrosive to moderate corrosive liquids • Moderate abrasives • Liquids that have good lubrication qualities CONVENTIONAL DOUBLE SEAL (with BigBoreTM Seal Chamber) • Liquids not compatible with single seal • Toxic, hazardous, abrasive, corrosive • When pump is operating under...