User manual HAIGHT PUMPS HAIGHT POSITIVE DISPLACEMENT ROTARY GEAR PUMPS

[. . . ] Operating Manual for Haight Positive Displacement Rotary Gear Pumps Pre-Installation 1. Special attention should be given to the suction piping which should be as large, or larger, than the pump intake port. For efficient operation, it is essential the suction side of a gear pump not be restricted. Avoid tees, elbows, valves, and other flow devices within 12 pipe diameters of the pipe inlet. [. . . ] Improper suction piping is the leading cause of poor pump performance, including cavitation, noisy operation, inadequate performance, and premature pump failure. Particular care should be taken to avoid long, restricted pipe runs, the use of elbows, tees, valves, or other flow devices within twelve (12) pipe diameters of the pump inlet. The discharge piping arrangement is somewhat less critical than the inlet side, however, good engineering practice, as defined by the Hydraulic Institute, should be followed. Piping systems should have adequate, independent hangers to provide support. Again, the Hydraulic Institute offers guidelines for proper pipe support design. Seals. Haight Pump offers three standard type seals, each with specific operating characteristics. · Lip seals: Available in Buna-N, Viton, Teflon, Silicone, and Kalraz, and as either single or double seals. Lip seals are inexpensive, but have certain limitations, which include: · Expected operating life of 2, 000 -3, 000 hours · Should not be used with system pressures over 75 psig · Should not be used in vacuum applications over 3" Hg Haight Pump (800) 871-9250 Page 4 Operating Manual General Information: Seals (cont'd) · Packing gland: Available in Graphfoil, or Teflon, and other materials upon request. Packing glands are useful at high temperatures and pressures, resist shock and vibration, and can be adjusted to accommodate wear. However, packing glands must weep to function properly and require adjustment during the start-up operation. During start-up, or after repacking, run the pump to pressurize the stuffing box. If steady weepage has not begun within ten (10) minutes, stop the pump and allow it to cool. Adjust the packing gland screws 1/6th of a turn in a cross bolt tightening pattern. Continue this process until the weepage rate is approximately one (1) drop per minute. Do not over tighten the packing gland as damage to the gland and shaft will result. Bearings and Rotor/Pinion Shaft DU Bearings. Do not use Teflon rotors in applications exceeding 100 PSI, and 200° F. Note: For applications above 175 PSI, vent both shaft bearings to the suction side of pump. Spares and Repairs Haight Pump operates a repair service for all pumps for which records exist. To ensure the correct parts are supplied, the pump serial number is required. The serial number is stamped into the metal of the pump body or cover, in a prominent position on the top area of the pump. We advise customers whose pumps are custom fabricated to have spare pumps or parts on hand. · · · · · · · Gland leakage. · · · · Haight Pump (800) 871-9250 Page 6 Operating Manual Haight 1 - 8 D/DR Item Number 1 2 3 4 6 7 8 8A 9 10 11 Description Qty Required Screws, cover (steel) 6 Expansion plug (cover) 1 Cover 1 - Cast Iron - Stainless Steel Shaft bearing 2 - Iron - Bronze - Carbon Graphite - DU-Iron Sleeve - DU-SS Sleeve 2 - Buna - Viton Cover O'ring - Buna 2 - Buna - Teflon - Viton Relief Valve Casing (. 5=1/2", . 7=3/4" - NPT Ports) 1 - Cast Iron - Stainless Steel Standard Casing- No relief valve - Cast Iron - Stainless Steel Shaft & Pinion Assy - Keyed shaft style 1 - Steel - Stainless Steel Shaft & Pinion Assy - Tang shaft style - Steel Pinion (not sold separately) 1 Shaft (not sold separately) 1 Shaft Drive Key 1 - Steel - Stainless Steel Item Number 12 13 14 15 16 17 18 19 20 21 22 23 24 Description Qty Required Rotor 1 - Cast Iron - Ni-Resist - Teflon - Delrin Drive Plate Cover 1 - Cast Iron - Stainless Steel Locating Roll Pin 1 Shaft Lip Seal 1 - Buna-N - Viton Relief Valve Cap 1 - Steel - Stainless Steel Relief Valve Bonnet Gasket 2 - Metalic - Teflon Relief Valve Pipe Plug 2 - Steel 1/2" Socket Head Relief Valve Poppet 1 - Steel - Stainless Steel Relief Valve Spring- Stainless 1 Relief Valve Bonnet 1 - Steel - Stainless Steel Relief Valve Adjusting Screw 1 - Steel - Stainless Steel Relief Valve Screw Gasket 1 - Metallic - Teflon Relief Valve Locknut 1 - Steel - Stainless Steel Haight Pump (800) 871-9250 Page 7 Operating Manual Haight 10 - 40 D/DR Item Number Description Qty Required 1 Screws, Cover (Steel) 8 2 Expansion plug (Cover) 1 3 Cover 1 - Cast Iron - Stainless Steel 4 Shaft bearing 2 - Iron - Bronze - Carbon Graphite - DU-Iron Sleeve - DU-Stainless Steel Sleeve 5 Wiper seal 2 - Buna - Viton 6 Cover O'ring 1 - Buna - Teflon - Viton 7 Relief Valve Casing 1 - Cast Iron - Stainless Steel Standard Casing- No Relief Valve - Cast Iron - Stainless Steel 8A Shaft & Pinion Assy 1 - Steel - Steel (Std. [. . . ] Buyer will also pay Baker any collection fees and reasonable attorneys fees incurred by Baker in enforcing this agreement or defending against any claim for breach of this hereunder. APPLICABLE FEDERAL LAWS-Baker and Buyer will comply with all federal laws, and regulations issued pursuant to such laws, which govern Baker's and Buyer's performance hereunder. WARRANTY PROVISIONS - For Haight Division Buyers, Baker warrants the goods manufactured by it to be free from defects in material or workmanship under normal use and service, for a period 90 days from the date of start-up or one year from the date of shipment, whichever comes first. Goods through normal use that become unusable within one year are warranted only as to defaults in material or workmanship for 90 days from the date of startup. [. . . ]