PUMPS & PUMP KITS Flanges Direct attachment of Legacy Pumps to NEMA Standard C-Face Motors. Part No 8.754-098.0 8.754-099.0 NEMA Frame Pump Series 184 TC / 215 TC GM 184 TC / 215 TC GT-GX Flanges Direct attachment of Interpump / General Pumps to NEMA Standard C-Face Motors. Part No 8.709-613.0 8.709-615.0 8.709-616.0 8.709-870.0 Flex Couplers Pump shaft cou plers. Direct-drive self-adjusting resilient coupling Legacy pumps to NEMA Standard Motor Shafts. 2-Piece Coupler Part No 8.754-100.0 8.754-101.0 8.754-102.0 8.754-103.0 NEMA-C Frame Pump Series Motor Drive Coupling 184 TC 215 TC 184 TC 215 TC GM GM GT-GX GT-GX 1-1/8" x 24 mm 1-3/8" x 24 mm 1-1/8" x 25 mm 1-3/8" x 25 mm Flex Couplers 24mm pump shaft cou plers. Direct-drive flex coupling 24mm Interpump / General and Admiral XLS Series pumps to NEMA Standard Motor Shafts. Part No 2-Piece Coupler 8.709-617.0 8.709-619.0 8.709-621.0 8.709-624.0 8.709-869.0 8.701-262.0 Old No 336028 336030 336032 336036 339112A 080320 Old No 336020 336024 336025 339120 *W995 / GD **W913 / GM NEMA Frame Pump Frame Size 56 / 145TC 184TC* 215TC** 8-13 HP(G) W973 W995 W913 WW161 2-Piece Coupler NEMA Frame Drive Shaft 56 A 145 T 184 T 215 T 5/8" 7/8" 1-1/8" 1-3/8" Gas (Aluminum) 1" Rubber Bumper – Replacement Pump Technical Information Correct pump installation is essential for optimum performance. It is recommended that the pump flow capacity be oversized for the actual flow required. For optimum running of the system, the water circulated through the regulating valve should not exceed 10-15% of the pump flow. Recirculating too much water can generate heat in the supply tank increasing the cavitation risk. Frequently Asked Questions: Question: How much should you reduce the pump RPM to achieve a lower flow capacity? Question: What diameter of pulley must I use to achieve the correct pump RPM? Question: What if I cannot change the engine / motor pulley? Question: If the engine / motor is running at a lower RPM than the maximum pump RPM allowed, what will be the pump flow capacity? Question: What is the approximate power required to achieve the maximum performances allowed? Answer: Required RPM = Expected Capacity x Answer: Exter-l Diameter of the Engine Motor Pulley Max RPM Allowed Max Allowed Capacity = External Diameter of the Pump Pulley x Answer: External Diameter of the Pump Pulley = External Diameter Engine Motor Pulley Answer: Attainable Maximum Capacity = Engine / Motor RPM x x Pump RPM Engine / Motor RPM Engine / Motor RPM Pump RPM max capacity indicated on the label max RPM indicated on the label Answer: Required Electric Motor HP = Electric Motor HP Required Gas Engine HP PSI x GPM 1460 PSI x GPM 1460 x 1.30 = Gas Engine HP Conditions to prevent pump cavitation: Minimum difference in height HZ (pos / neg) between pump and water level. The minimum inlet pressure value of the pump is limited by the cavitation phenomenon. Cavitation is the forming of vapor bubbles when the local pressure is below the vapor pressure of the liquid. Bubbles flow together with the liquid and when they reach a higher pressure area, they collide, generating abnormal stresses that are extremely dangerous to the pump components. To avoid the risk of cavitation, it is necessary that the pump installation is correct. Page 115
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