TEXSTEAM PUMP ~ SERIES 3700

TEXSTEAM PUMP SERIES 3700 GAS OR AIR POWERED CHEMICAL INJECTORS DESCRIPTION Texsteam series 3700 chemical injectors are pneumatically powered and designed for handling many types of aqueous solutions and other chemicals. Single or double-headed units with three volume adjustments are available in a wide variety of models. Injection pressure to 1500 psi can be achieved with air or gas pressure as low as 50 psi. Units can be furnished with or without reservoirs ( 5 or 10 gallon. other sizes available upon request) . Texsteam 3700 injectors feature a unitized gas motor and pump. The gas motor operates in an enclosed oil bath. All motor and pump parts are fully protected against dirt and the elements. The 3700 series’ efficient ratchet-type mechanism is noted for its long-life and accurate control. APPLICATIONS • Blending and proportioning chemical compounds in general process plant operation • Introducing solvents, de-emulsifiers, desalters and flocculants • High pressure bearing lubrication • Injection of methanol into gas pipe-lines • Lubrication of mechanical seals in pumps and machinery relying upon this type seal • Water treatment • Corrosion Inhibitor injection • Sampling • Introduction of measured quantities of highly toxic bactericides • Both low and high-viscosity fluids and non-abrasive slurries can be handled with this pump GENERAL ASSEMBLY Outstanding Features - Chemical Injectors Single and Double Headed Units Available ( one tank furnished with each head) Type 3700 S is designed for operation of low uniform pressures of 50 psi and less. Unitized with five gallon container and single injector head. Furnished with slight feed only… no fittings. Shipping Weight: 55 pounds ( packed in cardboard carton) . Type 3700 SL is designed for operation of low uniform pressure of 50 psi or less. Unitized with five gallon container and single injector head. Furnished with level gage and the following fittings: five feet of 5/ 16” copper tubing with 1/ 4” flared fitting. 1/ 4” x 1/ 2” bushing and 1/ 4” gas control needle valve for connecting gas supply line: five feet of 5/ 16” copper tubing with 1/ 4” flared fitting, 1/ 4” x 1/ 2” bushing and 1 / 4” high pressure line check for connecting chemical discharge line. Shipping Weight 58 pounds. Type 3700 SH is designed for operation of high or erratic pressures up to 1500 psi. Unitized with five gallon container and single injector head. Furnished with level gage and same fittings as the 3700 SL, plus a regulator with pressure gauge to reduce supply pressure to pump operating requirements. Shipping Weight: 62 pounds. Type 3700 D is designed for operation of low uniform pressures of 50 psi or less. Unitized with two five-gallon containers and double injector heads. Furnished with level gage only... no fittings. Shipping weight: 72 pounds. Type 3700 DL is designed for operation of low uniform pressures of 50 psi or less. Unitized with two containers and double injector heads. Furnished with same fittings as Type 3700 SL. Shipping Weight: 77 pounds. Type 3700 DH is designed for operation of high or erratic pressures up to 1500 psi. Unitized with two containers and double injector heads. Furnished with same fittings as Type 3700 SH. Shipping Weight: 81 pounds. MODELS AVAILABLE SPRING-LOADED LID on chemical container seals against contamination yet is easily opened. CHEMICAL RESERVOIR Choices available: 5 gallon 430 Stainless Steel 5 gallon 316 Stainless Steel 10 gallon 430 Stainless Steel TANK GAUGE enables an operator to check the pumping rate of any chemical pump in one minute under actual pumping conditions. This simplified procedure eliminates errors resulting from pump and valve leakage. TB-87 1 for 5 gallon SS tank TB-1285 for 10 gallon SS tank ACCESSORIES AVAILABLE include power gas line, gas regulator, regulator gauge, inlet needle valve, line checks, fluid discharge line, and necessary fittings 3 SEPARATE VOLUME ADJUSTMENTS for controlling volume range ( see page 5) POWER UNIT is available without tank and base. HEAVY GALVANIZED STEEL BASE with bolt holes for simple and easy mounting The TXT Pump Head is efficient ( horizontal plunger and vertical check valves) ; virtually trouble-free; easy to maintain stainless steel trim is standard; built-in priming valve to aid in priming and checking pump action; external packing gland; and protective felt wiper to protect plunger from sand, dirt, etc. Available in four different heads to meet your particular need ( see page 8) . MODEL DESIGNATION 3701 • Always specify plunger size when ordering to insure the correct size is ordered S • Indicates power unit model ( without chemical tank) . Absence of P indicates chemical injector complete with 5 gallon tank. H • Indicates accessories ( H is equipped with regulator, gauge and fittings: Liv equipped with fittings only) .Absence of H or L indicates no accessories with unit. P • Indicates number of injector heads ( S is a single head, D is a double head unit) ¼ ” • Indicates plunger size ( 4 is 3/ 16” , 1 is 1/ 4” , 3 is 3/ 8” , 5 is 1/ 2” ) Standard - Ductile Iron Body with stainless steel trim Choice of Trim Materials: Standard - Ductile Iron Body with stainless steel trim All Stainless Steel Heads - For models with All Stainless Steel and SS is placed after model number ( 3701 SH-SS) . Teflon packing • Metal-to-metal seats • Hastelloy ball checks • Viton Seals Optional Level & Rate Setting Gauge ( TB-1128 Carbon Steel) ( TB-1129 Stainless Steel) ( 304SS) TC-169 Drum Racks – These racks are constructed of galvanized angle iron to handle a 55-gallon drum. Theinjector stand is drilled for most TEXSTEAM chemical injectors or pumps. Use of the truck-height rack permits direct, easy loading of the drum. Weight 84 pounds, less pump and drum. INSTALLATION AND OPERATING INSTRUCTIONS 1.Remove pump from carton and inspect for possible damage in transit from factory. The cardboard carton was designed especially for this pump. If the pump has been damaged in transit, file claim with the carrier. 2. Bolt holes are provided for a permanent mounting ( see drawing for dimensions on page 6) . If more detailed information is required, request TXT Blueprint TC-187. 3. Install the TA-1497 priming valve ( Included with pump, but shipped loose in carton) on the pump head. 4. Connect the suction line to pump head. a. If a reservoir is furnished with the pump, the suction line is already connected. Fill the reservoir and open ( all the way) the TB-87 1 shut-off assembly. A strainer is furnished as a part of this unit. b. If a power unit model was purchased, a strainer should be piped into the suction line to prevent sand, rust or other particles which will inure the plunger and foul the check valves. 5. Connect the discharge line ( 5/ 16” tubing will suffice) . A check valve should be installed as close to the point of injection as possible. Note the arrow on the check valve indicating the direction of flow. The top connection on the pump head is the outlet and has a 1/ 4” female pipe thread connection. 6. Connect the power gas line. a. First blow power gas line clean to remove any loose rust particles, slag, sand, etc. b. Consider the pressure requirements of the pump. If the gas supply exceeds 50 PSI ( consider erratic pressures) , the pump should be equipped with a regulator to reduce the gas pressure to 50 PSI or below. The TXT TB-40 regulator is capable of handling upstream pressures to1500 PSI. c. Tie-in the gas line to the TA- 193 needle valve or TA-866 inlet bushing. 7. Fill the TA-583 box assembly with enough SAE-30 oil to cover the TA-457 bearing ( approximately 61/ 4 pts.) If low ambient temperatures are encountered, a lighter oil such as SAE-10 should be used. Check oil level at regular intervals with TA-946 oil gauge stick. 8. Adjust for desired volumes by considering Performance Data ( opposite page) and Volume Adjustment ( opposite page) . If more volume is required the pump head assembly can be changed or converted to a larger plunger size. Or, an additional head can be installed on the opposite side of the TA-583 box assembly by removing the TA-434 guide plug assembly. The TA-883 guide sleeve should also be removed and this can be accomplished with a drift and hammer. 9. Start the pump by slowly opening the TA- 193 needle valve. Prime the pump head by opening the TA- 1497 priming valve. After the pump discharges clear fluid without bubbles, close the priming valve for normal operations. At this point make a visual check of the plunger drip. Slowly tighten the gland to prevent excess drippage and waste of chemicals. Do not over-tighten plunger packing. Do not tighten with pressure on head. Keep TA-315 gland wrench handy for future packing adjustment. It may be necessary to readjust the packing the next day. A slight leak during the break-in is beneficial. Sufficient time should be allowed to let the packing “ sear-in” . If low volumes are being pumped, the fluid end, the discharge line and all other fittings up to the line check should be thoroughly purged of all air bubbles. Check pump action by opening TA- 1497 priming valve. MAINTENANCE INSTRUCTIONS FOR INSPECTION OR REPLACEMENT OF POWER CYLINDER OR PISTON PARTS ( Refer to parts list on page 6) Shut off the power gas pressure. Unscrew TA-390 cylinder shell. This will expose TA-597 piston assembly and TA-881 piston rod. To replace piston cup TA-867 or tapped washer TA-890, unscrew TA-1211 piston CU retainer. TA-881 piston rod is hex material and is easily removed from TC-28 valve body. To Inspect Pump Head Parts Suction and discharge balls and seats can be inspected or replaced without removing pump head from the power unit. To do this it is necessary to disconnect suction and discharge lines at the head and unscrew TA-1496 top bushing and TB-736 bottom bushing. To Remove Pump Head From Gear Box 1. Disconnect suction and discharge line. 2. Pull TA-290 pin. 3. Entire fluid head can now be unscrewed from gear box. 4. Loosen gland nut. 5. Pull chemical plunger from head. 6. Remove TA-810 packing nut. This gives access to the yoke packing. 7. Loosen TA-225 lock nut. Yoke can then be unscrewed from fluid head ( while unscrewing the yoke the gland nut must also be backed-off) . At this point, wiper washer, gland nut and packing gland nut can be removed. This gives access to the main plunger packing. To Replace the TB-47 Gas Hose Unscrew the hex nut ( attached to hose) from TA- 137 half union. Then unscrew TB-47 hose from TA-866 inlet bushing. To Inspect or Replace TA-457 Ratchet Bearing First remove TA-434 guide plug assembly. Then remove the pump head from the gear box ( in case of double-headed pumps, both heads should be removed) . TA-585 cross head assembly can then be lifted out. TA-457 ratchet bearing and TA-458 washer can now be inspected or replaced by removing TA-433 bearing bolt. TB- 139 ratchet assembly can now be lifted out. TA-948 ratchet control can be disconnected from TA-949 ratchet latch and lifted out. TA-312 cross arm assembly can be slipped from under the TA-793 bushing and lifted out. TA-455 ratchet pawl, TA-955 pawl spring, TA-576 cotter key and TA-577 washer can now be inspected or replaced. TA-793 bushing can be removed exposing TA-77 ball check spring, TA-579 washer and TB- 136 valve disc for inspection. To Remove TB-107 Switching Valve Remove both TA-390 cylinder shells. Unscrew both TA-881 piston rods ( TA-597 piston assemblies may be left on the TA-88 1 piston rod) . At this point TB- 107 valve and TA-65 flipper arm assembly can be lifted from gear box. TA-508 flipper spring sub-assembly can be replaced by removing TA-168 cotter pin and TA-170 clevis pin. To Replace TA-65 Flipper Arm Assembly and Bearing Remove both TA-166 cap screws and TA-167 washer from the underside of TC-28 valve body. To remove TA-947 bearing insert, loosen TA-107 lock nut. TA-126 valve ball should be inspected and replaced if necessary. To Remove TB-38 Sight Feed Assembly Remove TA-322 suction line. Then remove TA-302 strainer bushing assembly and TA-306 gasket from inside TA-664 reservoir. TB-38 sight feed assembly can now be pulled away from TA-664 reservoir assembly. PRESSURE - VOLUME RANGE CHART NOTE* - For double-headed units increase maximum volume by two Pint per DayPlunger Maximum Volum 3/ 16” 3000# 3704 8 .3 1/ 4” 1500# 3701 16 .5 3/ 8” 1000# 3703 40 .5 1/ 2” 500# 3705 70 1 VOLUME ADJUSTMENT There are three principal adjustments involved in controlling injector volumes on the Series 3700 chemical injector. They are pointed out in the diagram at right under the headings of Adjustments A, B and C. Adjustment A: 1. Gas valve to control speed or number of strokes per minute of motor. Adjustment B: 2. Ratchet control determines number of teeth drive pawl will engage each stroke of motor. Place ratchet latchTA-949 in hole on left to engage maximum number of teeth to pump maximum volume. Adjustment C: 3. First position, long stroke ( most. volume) . 4. Second position medium stroke. 5. Third position, short stroke ( least volume) . For maximum efficiency at any desired discharge rate, make adjustments in order A-B-C. To Replace TA-65 Flipper Arm Assembly and Bearing Remove both TA-166 cap screws and TA-167 washer from the underside of TC-28 valve body. To remove TA-947 bearing insert, loosen TA-107 lock nut. TA-126 valve ball should be inspected and replaced if necessary. To Remove TB-38 Sight Feed Assembly Remove TA-322 suction line. Then remove TA-302 strainer bushing assembly and TA-306 gasket from inside TA-664 reservoir. TB-38 sight feed assembly can now be pulled away from TA-664 reservoir assembly. 1* TA-11 Gland Nut 2* TA-13 Stern 3* TA-882 Half Union 4* TA-23 Packing 5* TA-577 Washer 6* TA-65 Flipper Arm Assy. 7* TA-77 Spring 8* TA-107 Lock Nut 9* TA-3106 U-Bolt 10 TA-3112 Handle Valve 11* * TA-126 Ball 12. TA-129 Pressure Gauge 0-100 psig 13. TA-137 Half Union 14. TA-138 Drain Plug 15. TA-144 Bolt Nut - 3 Reqd. 16. TA-166 Cap Screw 17. TA-164 Nut 18. TC-393 Frame 19 TA-3100 Spring 20 TA-3101 Flat Washer 21 TB-871 Tank Ga. - 5 gal. SS tank TB-1285 Tank Ga. - 10 gal. SS tank 22 TA-167 Washer 23 TA-168 Cotter Pin 24 TA-170 Clevis Pin 25 TA-193 Needle Valve & Stem Assy. 26* TA-194 Needle Valve Body 27 TA-677 Outlet Body 28* * TA-391 Spring 29 TA-54 Ball 30 TA-479 O-Ring- Buna-N 31 TA-678 Inlet Body 32* TA-195 Needle Valve Nut 33 TA-3110 Bonnet 34 TA-3135 Spring Plate 35 TA-208 Valve Seat Yoke 36 TA-209 End Cap 37* * TA-210 Gasket 38* * TA-211 Diaphragm 39* * TA-212 End Cap Gasket 40 TA-213 Nut Gasket 41* * TA-214 Valve Seat Assembly 42 TA-217 Regulator Adj. Screw 43 TA-3133 Spring Disc 44 TA-219 Screw 45 TA-220 Lock Nut 46* * TA-3111 Adjusting Spring 47* * TA-222 Seat Block Pin 48 TA-223 Screw 49 TA-3118 Connector Half & Comp. Nut 50 TA-3116 Elbow & Comp. Nut 51 TA-300 Washer - 3 Reqd. 53 TA-312 Cross Arm Assembly 54 TA-2184 O-Ring 55 TA-390 Cylinder Shell 56 TA-402 Lock Nut 57 TA-425 Lock Washer - 3 Reqd. 58 TA-433 Bearing Bolt 59 TA-434 Guide Plug Assembly 60* * TA-455 Ratchet Pawl 61 TA-457 Ratchet Bearing 62 TA-458 Washer 63* * TA-508 Flipper Spring 64* * TA-519 Filter Screen 65 TA-528 Cover Rivets - 2 Reqd. 66 TA-2163 O-Ring Buna-N 67 TA-573 Bushing 68 TA-574 Latch Bolt 69 TA-575 Thumb Screw 70 TA-2598 Cotter Pin 71 TA-577 Washer 72 TA-578 Street Elbow 73 TA-579 Washer 74 TD-64 Box Assembly 75* * TB-1584 Base-3700 Single Tank 76 TA-585 Cross Head Assembly 77 TA-586 Ratchet Sub-Assembly 78 TA-597 Piston Assembly 79 TA-608 Copper Tubing w/ Fittings 81 TA-664 Reservoir, 5 gal, 430SS 82 TA-665 Base - 3700 Double SS Tanks 83 TA-3199 O-Ring Viton 84 TA-3104 Retainer Nut 303SS 85 TA-674 Nipple 86 TA-761 Exhaust Nipple 87 TA-793 Bushing 88* * TA-808 Cup Spring 90 TA-866 Inlet Bushing 91* * TA-867 Piston Cup 92 TA-881 Piston Rod 93 TA-883 Guide Sleeve 94 TA-890 Tapped Washer 95 TA-939 Cross Head 97 TA-947 Bearing Insert 98 TA-948 Ratchet Control 99 TA-949 Ratchet Latch 100* * TA-955 Pawl Spring 101 TA-956 Check Pawl Stud 102 TA-1211 Cup Retainer ( Alum.) 104 TB-40 Pressure Regulator 105* * TB-47 Gas Inlet Hose 106* * TA-4669 Valve Disc & Drive Pin Assy. 107 TB-139 Ratchet Assembly 108 TB-206 Injector Box Cover 109 Inject. Hds.-See pg. 8 113 TC-28 Valve Body 114 TC-29 Regulator Body 116 TA-0578 Street Elbow 117 TA-3103 Strainer 124 TA-676 Line Check Brass 125 TA-3115 Valve Body 303 SS 126 TA-3114 Stem Valve 303 SS 127 TA-3113 Spring 316 SS 128 TA-3328 Washer 303 SS 129 TA-3107 O-Ring Viton 131 TA-3162 Polypropylene Suction Line 132 TA-3163 Polypropylene Suction Line OPTIONAL PARTS 81 TA-2057 Reservoir ( 5 gal. 316SS) 81 TA-1539 Reservoir ( 10 gal. 430-2B SS) TA-675 Stainless Steel Line Check Following Parts for TA-675 Line Check TA-1296 Outlet Body End TA-1297 Inlet Body End TA-1574 Washer Plunger Size 3/ 16" 1/ 4" 3/ 8" 1/ 2" Item Material Material All Ductile All Ductile All Ductile All No. Specification Construction Stainless w/ SS Stainless w/ SS Stainless w/ SS Stainless Steel Trim Steel Trim Steel Trim Steel 3/ 16” ¼ ” 3/ 8” ½ ” 2* Plunger 17-4PH SS TB-1471 TB-1175~ TB-1175 TB-1176~ TB-1176 TB-1177~ TB-1177 3 Plunger Packing Gland 303 SS TA-5642 TA-1463~ TA-1463 TA-0957~ TA-0957 TA-1219~ TA-1219 4* Plunger Packing Set ( Standard) Buna-N TA-3969 TA-1461~ TA-1461 TA-1456~ TA-1456 TA-0959~ TA-0959 7 Yolk Malleable Iron TB-1173 TB-1173~ TB-1173 TB-1173~ TB1173 TB-1173~ TB-1173 8 O-Ring ( Included in item 23) Buna-N TA-0479 TA-0479~ TA-0479 TA-0479~ TA-0479 TA-0479~ TA-0479 9 BelIeville Washer ( 12 Reqd) C. Steel TA-4256 TA-4256~ TA-4256 TA-4256~ TA-4256 TA-4256~ TA-4256 10* Yoke Packing Set Buna-N TA-4892 TA-4127~ TA-4127 TA-4127~ TA-4127 TA-4127~ TA-4127 11 Top Bushing 302 SS TA-1496 TA-1496~ TA-1496 TA-1496~ TA-1496 TA-1496~ TA-1496 12* Ball Check Spring 316 SS TA-0077 TA-0077~ TA-0077 TA-0077~ TA-0077 TA-0077~ TA-0077 13* Large Top Ball 3/ 8" 316 SS TA-0054 TA-0054~ TA-0054 TA-0054~ TA-0054 TA-0054~ TA-0054 14* Top Seat-Assembly w/ Buna-N “ O” -ring 303 SS TB-0737 TB-0737~ TB-0737 TB-0737~ TB-0737 TB-0737~ TB-0737 15* Small Top Ball 1/ 4” 316 SS TA-0126 TA-0126~ TA-0126 TA-0126~ TA-0126 TA-0126~ TA-0126 16 Priming Valve ( Ball & Spring incl. 3/ 16" ) 303 SS TA-5462 TA-1497~ TA-1497 TA-1497~ TA-1497 TA-1497~ TA-1497 17 Lock Nut Yoke Brass TA-0225 TA-0225~ TA-0225 TA-0225~ TA-0225 TA-0225~ TA-0225 18 Nut, Plunger Packing Gland 303 SS TA-4104 TA-4104~ TA-4104 TA-4104~ TA-4104 TA-4104~ TA-4104 19 Nut, Yoke Packing Brass TA-4094 TA-4094~ TA-4094 TA-4094~ TA-4094 TA-4094~ TA-4094 20* Wiper Ring, Plunger Buna-N TA-4095 TA-4095~ TA-4095 TA-4095~ TA-4095 TA-4095~ TA-4095 21 Drip-Ring, Plunger Buna-N TA-4095 TA-4095~ TA-4095 TA-4095~ TA-4095 TA-4095~ TA-4095 21 Drip-Ring, Plunger Buna-N TA-4095 TA-4095~ TA-4095 TA-4095~ TA-4095 TA-4095~ TA-4095 22 Ball, Suction 3/ 8" 316 SS TA-0054 TA-0054~ TA-0054 TA-0054 23* Bottom Seat ( w/ Buna-N ‘ O” Ring) 303 SS TB-1216 TB-0736~ TB-0736 TB-0736~ TB-0736 TB-0736~ T B-0736 24 Pin Plunger Carbon Steel TA-0290 TA-0290~ TA-0290 TA-0290~ TA-0290 TA-0290~ TA-0290 25 Gasket 304 SS TA-4394 Not Applicable 26* O-Ring Buna-N NA Not Applicable 27* O-Ring Buna-N NA Not Applicable 28 Yoke Cover Plastic TC-1604 TC-1604~ TC-1604 TC-1604~ TC-1604 TC-1604~ TC-1604 4* Plunger Packing Viton TA-3967 TA-4102~ TA-4102 TA-4101~ TA-4101 TA-4103~ TA-4103 Teflon TA-3966 TA-1642~ TA-1642 TA-1234~ TA-1234 TA-1012~ TA-1012 Hard TA-3948 TA-2295~ TA-2295 TA-1875~ TA-1875 TA-1874~ TA-1874 8* O-Ring Viton TA-2580 TA-2580~ TA-2580 TA-2580~ TA-2580 TA-2580~ TA-2580 14* Top Seat-Assembly ( Metal-to-Metal) 303 SS N.A. TA-0806 TA-0806~ TA-0806 TA-0806~ TA-0806 TA-0806 22 Ball 1/ 2” ( Use w/ TA-0771, 316 SS N.A. TA-0053 TA-0053~ TA-0053 TA-0053~ TA-0053 TA-0053 Metal-to-Metal Bottom Seat Only) 23* Bottom Seat ( Metal-to-Metal) 303 SS N.A. TA-0771 TA-0771~ TA-0771 TA-0771~ TA-0771 TA-0771