-SS VVS nstallation, aintenance & Operating nstructions - SS VVS TO The ulflo -Series feature both direct acting and internal pilot operated models with either screw or flange type connections. The threaded valves are available in both and sizes in either cast iron or steel. The flange type valves also include a model and may be specified with, or S flanges. ote that is available in Steel and SS only. The direct acting valves operate at pressures to 150.S..; the internal pilot operated models at pressures to 500.S.. oth types handle large flows of liquid of all viscosities encountered in industrial practice. The -Series valves may be used in a variety of applications including hydraulic and lubrication systems for load regulation and system protection. Unusual applications and special valves should be referred to our engineering staff for recommendation. STTO ulflo valves can be mounted in any position. tee may be inserted in the pump discharge line to mount the valve. The pipe lines carrying the heavy valves must be well supported and overhung weights avoided. The correct size of valve must be used, preferably equal to the size of the pipe line to which they are connected. Threaded valves ( and ) may be threaded into pipe nipples. Overhung weights on threads should be avoided. langed valves ( and ) are bolted to the companion flange which may be threaded or welded to the pipe. The outlet of the valve should be piped to the supply tank, unless specific applications call for alternate piping of return lines. are must be taken to have the discharge well below the oil level in the tank to prevent air entrainment and erratic operation. 3
-SS STT VVS may be set with a hydraulic hand pump for cracking pressure. f a test stand is available, valve should be connected to the discharge header with the pump bypass open, and the bypass gradually closed until the desired pressure registers on the gauge. irect djust valve adjusting screw until valve slightly bleeds at the set bypass pressure and lock adjusting screw. ilot djust valve adjusting screw until approximately 5-7 is flowing through the valve, at that point the main piston will open and then the valve will be considered at the set point, then lock adjusting screw. f a valve is required to bypass a given amount of fluid at a given pressure, a test stand having a flow meter in the pump discharge line must be available. With a valve adjusting for cracking pressure as above, continue closing bypass until the required flow registers on the flow meter and observe pressure. eadjust pressure, if necessary, to obtain desired pressure at desired flow. T ulflo valves provide reliable chatter-free operation when the system is free of abrasives and foreign matter. ontinuous filtration of the liquid used is strongly recommended. SY O T T VVS - SS VVS To dismantle the valve for inspection or cleaning: 1. emove cap and O-ring 2. emove lock nut 3. emove adjusting screw. emove cap screws 5. emove bonnet 6. emove gasket 7. emove spring retainer 8. emove spring or springs and 9. emove piston. Unscrew and withdraw cylinder 11. emove retaining bushing if necessary nspect cylinder bore and piston for wear or scoring. eplace broken or damaged parts. lean all parts thoroughly and re-assemble as follows: everse process of disassembly from operation 11 to 6, then thread adjusting screw into bonnet so that it may be guided into the recess of spring retainer, while re-assembling bonnet to body. Then proceed with steps 5,, 2, 1, in reverse order. 35 35
-SS Y U TTO T Symbol o. 1 2 3 & 5 6 7,8,9 11 esignation Series aterial Type onnection S lange ating lange Style Only O-ing aterial 12 iston aterial ode SS 09 11 one V S T /S /SS /3SS 13 Spring S T U 1 Setting escription ast ron ast Steel Stainless Steel irect cting nternal ilot Operated Screw Type (2 1 /2 and only) lange aised ace, Staggered olt enters Smooth ace, Staggered olt enters aised ace, olts on enterline Smooth ace, olts on enterline una O-ing ap Seal (Standard) Viton O-ing ap Seal Silicone O-ing ap Seal Teflon O-ing ap Seal flas O-ing ap Seal thylene ropylene eoprene ardened Steel 16 Stainless Steel 303 Stainless Steel (or Stainless s Only) See elow esired Set ressure - SS VVS X: Series Steel 09 ilot Operated 09 SS VVS (irect cting) SSU T Symbol & & Spring art o. ressure ange 0960 0961 0960 and 0970 0961 and 0971 60 61 una OT: Special valves are prefixed by numbers assigned by the factory. 7-57.S.. 8-75.S. 1-115.S.. 16-150.S.. 5-50.S.. 5-67.S.. OT: Springs suffixed with are hrome Vanadium, indicates Stainless Steel. or pressures other than listed, consult factory. X: Specify: 1. odel umber ( 1- ) 2. O-ing dentification umber ( 11 ) 3. iston aterial ( 12 ). Spring art umber ( 13 ) 5. Spring pressure range or desired pressure setting. ( 1 ) & & & (ontinued) 60 and 70 61 71 1160 1160 and 1170 SS VVS (ilot Operated) Symbol O & O & O & -.S.. -135.S.. 2-37.S.. -75.S.. Spring art o. ressure ange 0980 and 1190 80 and 1190 1181 and 1190 50-500.S.. 50-500.S.. 50-500.S.. 36
-SS and (irect cting) SOS SZ SZ.. SOS S 15 9 /16 17 1 /2 5 1 /2 6 5 /8 5 1 /16 6 3 /8 TS ST. SYO O VV SZ ap djusting Screw ock ut O-ing ap Screw onnet asket Spring etainer Spring,,,,,,,,, 11 11SS 0922 0922SS 605-S 605-SS 60-* 60-* 3/8 x 1 SS 0909 0909 0909SS 0903 0903T 0916 0916SS See hart 13 13SS 22 22SS 705-S 705-SS 70-* 70-* 3/8 x 1 SS 9 9 9SS 3 3T 16 16SS See hart - SS VVS Spring,, See hart See hart ylinder ody, 0908 0908SS 0900 0900 0900SS 8 8SS 0 0 0SS iston ardened Steel 16 Stainless Steel 303 Stainless Steel,,, (only) 0906 0906 0906SS 6 6 6SS etaining ushing, 0911 0911SS 11 11SS *See o-ring selection chart ecommended spare parts 37
-SS, and (irect cting) SOS SOS S SZ. 22.5 5.0 2 1 /2 2 1 /2 3 3 lange ating 15 13 /16 16 3 /16 17 1 /8 17 1 /2 3 /16 5 3 / 6 1 /8 6 1 / 6 5 /8 7 15 /16 8 1 /8 ote! efer to age for lange and rilling imensions. SZ TS ST SYO O VV SZ ap djusting Screw ock ut O-ing ap Screw,,,,,,,,,, 11 13 1113 11SS 13SS 1113SS 0922 22 1122 0922SS 22SS 1122SS 605-S 705-S 805-S 605-SS 705-SS 805-SS 60-* 70-* 80-* 60-* 70-* 80-* 3/8 x 1 SS 3/8 x 1 SS 3/8 x 1 SS - SS VVS onnet asket Spring etainer,,,, 0909 0909 0909SS 9 9 9SS 19 19 19SS 0903 0903T 3 3T 13 13T 0916 16 1116 0916SS 16SS 1116SS Spring,, See hart See hart See hart Spring ylinder ody,,,, See hart See hart See hart 0908 8 18 0908SS 8SS 18SS 0900 0900 0900SS 0 0 0SS 1 1 1SS iston ardened Steel 16-Stainless Steel 303-Stainless Steel (Only) 0906 6 16 0906 6 16 0906SS 6SS 16SS etaining ushing,, 0911 11 1111 0911SS 11SS 1111SS *See o-ring selection chart ecommended spare parts 38
-SS O TS (irect cting) ll valve tests 1. to 1. Oil Viscosity 150 S.S.U. at. (harts good from 30 to 500 S.S.U.) VV TSTS OS UT 300 250 0 150 50 30 ated apacity 225... Spring art o. 0960 ressure ange 7 to 57.S.. Spring art o. 0961 ressure ange 8 to 75.S.. Spring art os. 0961 and 0971 ressure ange 16 to 150.S.. Spring art os. 0970 and 0960. ressure ange 1 to 115.S.. Tests apply only to irect Operating s or 09 s. 1 2 6 8 60 OVSSU.S.. VV TSTS OS UT 350 250 150 50 30 ated apacity 350... Spring art o. 60 ressure ange 5 to 50.S.. Spring art o. 61 ressure ange 5 to 67.S.. Spring art o. 60 and 70 ressure ange to.s.. Spring art os. 61 and 71 ressure ange to 135.S.. Tests apply only to irect Operating s or s. 1 2 6 8 60 OVSSU.S.. - SS VVS VV TSTS OS UT 600 500 0 300 0 80 60 ated apacity 600... Spring art o. 1160 ressure ange 2 to 37.S.. Spring art os. 1160 and 1170 ressure ange to 75.S.. Tests apply only to irect Operating s or 11 s. 1 2 6 8 60 80 OVSSU.S.. Overpressure - The pressure increase or accumulation above the set pressure when the valve is discharging flow. 39
-SS (nternal ilot Operated) O S - SS VVS SY O T OT OT VVS To dismantle the valve for inspection or cleaning: 1. emove cap and gasket 2. emove nut 3. emove adjusting screw. emove cap screws 5. emove bonnet 6. emove gasket 7. emove pilot spring 8. Unscrew and withdraw cylinder (do not unscrew cylinder retainer ) 9. Unscrew and remove cylinder retainer, after removing cylinder. aution: hold in vise. alance spring O under heavy compression.. Unscrew and remove piston retainer 11. emove retaining ring 12. emove pilot piston 13. emove balance spring O 1. emove piston 15. emove retaining bushing S if necessary nspect bores of both piston retainer and cylinder. nspect pistons and for wear or scoring. eplace broken or damaged parts. lean all parts thoroughly and re-assemble as follows: everse process of disassembly from operation 16 to 6, then thread adjusting screw into bonnet, while re-assembling to body. Then proceed with steps 5,, 2, 1 in reverse order.
-SS and (nternal ilot Operated) SOS O SZ. SOS S 15 5 /8 16 1 /2 5 1 /2 6 5 /8 5 1 /16 6 3 /8 7 /8 TS ST Symbol O ap djusting Screw ock ut O O-ing ap Screw onnet ast ron Steel Stainless Steel,, 60-* 3/8 x 1 SS 0919 0919 0919SS 60-* 3/8 x 1 SS 19 19 19SS asket etainer ing ilot Spring iston etainer ylinder etainer ylinder ilot iston ardened Steel 16 Stainless-Steel 303 Stainless-Steel alance Spring iston ardened Steel 16 Stainless-Steel 303 Stainless-Steel ody SZ etaining ushing, (Only), 11 11SS 12 12SS 505-S 505-SS 0903 0903T 11 11SS 1190 1118 1118SS 0912 0912SS 0928 0928SS 1115 1115 1115SS 0980 VV SZ 1115 1115 1115SS 80 0936 36 0936 36 (Only) 0936SS 36SS 0900 0900 0900SS 0 0 0SS 0911 11 0911SS 11SS 11 11SS 12 12SS 505-S 505-SS 3 3T 11 11SS 1190 1118 1118SS 12 12SS 28 28SS - SS VVS * See o-ring selection chart ecommended spare parts 1
- SS VVS -SS, and (nternal ilot Operated) SOS O TS ST Symbol O ap djusting Screw ock ut O-ing O 2 1 /2 2 1 /2 3 3 SOS S lange ating ap Screw onnet ast ron Steel Stainless Steel 3/8 x 1 SS 0919 0919 0919SS 3/8 x 1 SS 19 19 19SS 3/8 x 1 SS 1119 1119 1119SS asket etainer ing ilot Spring SZ iston etainer ylinder etainer SZ,,. ylinder 0928 28 0928SS 28SS ilot iston ardened Steel 1115 1115 16 Stainless-Steel 1115 1115 303 Stainless-Steel (Only) 1115SS 1115SS alance Spring iston, 0980 80 ardened Steel 0936 36 16 Stainless-Steel 0936 36 303 Stainless-Steel (Only) 0936SS 36SS 0900 0 ody 0900 0 0900SS SS etaining ushing 0911 11 0911SS 11SS 22.5 5.0 11 11SS 12 12SS 505-S 505-SS 0903 0903T 11 11SS 1190 1118 1118SS 0912 0912SS 22.5 VV SZ 15 7 /8 16 1 / 16 1 /8 16 1 /2 18 3 /16 18 3 /8 11 11SS 12 12SS 505-S 505-SS 60-* 60-* 60-* 3 3T 11 11SS 1190 1118 1118SS 12 12SS 11 11SS 12 12SS 505-S 505-SS 13 13T 11 11SS 1190 1118 1118SS 1112 1112SS 1128 1128SS 1115 1115 1115SS 80 1136 1136 1136SS 1 1 1SS 1111 1111SS 5 3 / 6 1 /8 6 1 / 6 5 /8 7 15 /16 8 1 /8 * See o-ring selection chart ecommended spare parts 2
-SS O TS (nternal ilot Operated) ll valve tests 1. to 1. Oil Viscosity 150 S.S.U. at. (harts good from 30 to 500 S.S.U.) VV TSTS 300 250 0 ated apacity 225... 150 OS UT 50 30 Spring art os. 0980 and 1190 ressure ange 50 to 500.S.. Tests apply only to ilot Operated s or 09 s. 1 2 6 8 60 OVSSU.S.. VV TSTS 350 250 ated apacity 350... OS UT 150 50 30 Spring art os. 80 and 1190 ressure anges 50 to 500.S.. 1 2 6 8 60 OVSSU.S.. VV TSTS Tests apply only to ilot Operated s or s. - SS VVS OS UT 600 500 0 300 0 80 60 ated apacity 600... Spring art os. 1181 and 1190 ressure anges 50 to 500.S.. Tests apply only to ilot Operated s or 11 s. 1 2 6 8 60 OVSSU.S.. Overpressure - The pressure increase or accumulation above the set pressure when the valve is discharging flow. 3