Pressure Control (and Check) Valve

Transcription

1 Pressure ontrol (and heck) Valve PRSSUR OTRO (A ) VAV 50 to 80l/min 4Pa eatures qthis circuit control valve works as a sequence valve, unloading valve, and counter balance valve. waximum operating pressure is Pa {4kgf/cm }. ethough a direct type valve, there is little pressure override. rthe mounting surface of the gasket conforms to the ISO standards shown in the table below. Specifications odel o. Screw ounting asket ounting () Q-T0-*A- () Q-T0-*A- () Q-T0-*A- () Q-0-*A- () Q-0-*A- () Q-0-*A- ominal iameter (Size) /8 aximum Working Pressure aximum low Rate l/min {4} /4,, 0 Ports 50 ¼ 80 Pressure adjustment range Type A 0.5 to 5 {. to 8.7} Type 0.5 to.75 {5. to 7.9} Type 5 to.5 {8.7 to 5.7} Type.75 to 7 {7.9 to 7.4} Type.5 to 4 {5.7 to 4} Weight kg T Type Type.9 (.) 5.0 (5.4).5 (.8).0 (.5) asket Surface imensions ISO ISO ISO (.) (.8) Weight values in parentheses are for when a check valve is included. The cracking pressure of the check valve is 0.Pa {.0kgf/cm }. xample circuit When using type. xplanation of model o. ()Q 0 xample circuit When using type. esign number Pressure adjustment range A,,,, (ote: Type pressure adjustment is note available for Type.) Type,,, 4 ominal diameter (size) ounting method T: Screw ounting : asket ounting Pressure control valve Pressure control and check valve andling z To adjust pressure, loosen the lock nut and then rotate the adjusting bolt clockwise (rightward) to increase pressure or counterclockwise (leftward) to decrease it. x The pressure adjustment range is expressed in terms of cracking pressure. c Run the out port of Q-T/** type and 4 directly to the tank. v The following describes the method for using Types and. Application of back pressure to the valve output side such as in the example circuit shown below, use Type or Type and run the drain port directly to the tank. b When two or more of these valves are ganged in sequence, make sure the setting pressure (cracking pressure) differential between them is at least Pa {0.kgf/cm }. n Vibration (chattering) may occur with the () Q-***-- depending on operating conditions when using type and pressure adjustment range. Use external drain type if it happens. m Type is standard. When Type,, or 4 is required, make modifications in accordance with the figures on the next page. odifications change the valve type, so be sure to change the markings on the nameplate., Use the following table for specification when a sub plate is required. odel o /8-0X-0 / -0-0 /4-0X X-0 odel o. Pipe Weight iameter kg ¼ ½ olt imensions Q'ty () Q-0-** () Q-0-** () Q-0-** Applicable Pump odel. () Q-0-**-.9 () Q-0-**-.7 () Q-0-**- ote) These sub plates can also be used for reducing valves.. The following are the bundled mounting bolts. Tightening Torque m{kgf cm} 45 to 55 {40 to 50} ote) or mounting bolts, use bolts of.9 strength classification or equivalent. Pressure ontrol Valve -5

2 A Q-***-**- IS Symbol Type Type Type Q-***-**- Type Type Type R R Type is standard. Installation imension rawings Type R Q-T**-*-(Screw ounting) R Pressure ontrol Valve I Type Type R AX.A ameplate xternal drain port odel o. A P Q () Q-T0-** /8 () Q-T0-** /4 () Q-T0-** ¼ Q-**-*- (asket ounting) exagon nut - Rc Q -P Attachment port φ Type exagon nut xternal drain port - φ 7.5x counterbore φ holes ameplate O AX.A Attachment port odel o. A Q-0-** Q-0-** Q-0-**

3 Installation imension rawings Type Q-T**-*- (Screw ounting) Type xternal drain port exagon nut R AX.A - Rc Q Type ameplate odel o. A P Q Q-T0-** /8 Q-T0-** /4 Q-T0-** ¼ Q-**-*- (asket ounting) -P Attachment port Pressure ontrol Valve Type exagon nut AX.A xternal drain port - φ 7.5x counterbore φ holes ameplate φ Attachment port odel o. A Q-0-** Q-0-** Q-0-**

4 A Pressure ontrol Valve I Sub Plate -***-0 odel o. AA QQ RR SS TT UU VV WW XX YY -0-0 / X-0 / -0-0 / X ¼ X-0 ½ Performance urves haracteristics () Q-T0-**-. low path {.}.4 low path {4.}. {.}.0 {0.} { 8.} {.} { 4.} 0. {.0} UU- 0 tap xternal drain TT SS RR XX WW - φ VV AA φ 7 depth 8 ydraulic Operating luid inematic Viscosity mm /s () Q-T0-**- ote) The figure shows size 0(X), with four 0 tap holes for size 0(X) and 0(X) valve mounting bolts. ote) When a valve cover external drain and external pilot port are used, remove the plugs from the sub plate external drain and external pilot port. () Q-T0-**- () Q-0-**- () Q-0-**- () Q-0-**- QQ - φ 4 hole 4- φ φ 7.5 x counterbore xternal pilot - Rc YY - Pa{kgf/cm} low path (pressure adjustment A, type). {.} low path (pressure adjustment,, type).4 {4.} low path. {.}.0 {0.} { 8.} {.} { 4.} 0. {.0} low path (pressure adjustment A, type). {.} low path (pressure adjustment,, type).4 {4.} low path. {.}.0 {0.} { 8.} {.} { 4.} 0. {.0} O low path. low path {.} {4.} {.} {0.} { 8.} {.} { 4.} {.0} low path (pressure adjustment A, type). low path (pressure adjustment,, type).4 low path {.} {4.} {.} {0.} { 8.} {.} { 4.} {.0} low path (pressure adjustment A, type). low path (pressure adjustment,, type).4 low path {.} {4.} {.} {0.} { 8.} {.} { 4.} {.0}

5 Pressure low Rate haracteristics : Press rise : Pressure drop () Q-*0-A- () Q-*0-- () Q-*0-- Pressure. {.}. {.}.0 {0.} 0.9 { 9.} Pressure Pa {kgf/cm }. {.4}. {.4}.0 {}.9 {9.4}.8 {8.4} Pressure Pa {kgf/cm } 5.0 {5.0} 4.5 {45.9} 4.0 {4}.5 {5.7} { 8.}.7 {7.}.0 {} () Q-*0-- () Q-*0-- Pressure 0 {0} 9 {9.8} 8 {8.} 7 {7.4} {.} () Q-*0-A- Pressure 7 {7} {} 5 {5} 4 {4} {} {} () Q-*0-- () Q-*0-- Pressure ontrol Valve Pressure. {.}. {.}.0 {0.} 0.9 { 9.} Pressure. {.4}.0 {}.9 {9.4}.8 {8.4} Pressure 5.0 {5.0} 4.5 {45.9} 4.0 {4}.5 {5.7} { 8.}.7 {7.}.0 {}

6 A Pressure low Rate haracteristics () Q-*0-- : Press rise : Pressure drop () Q-*0-- Pressure 0 {0} 9 {9.8} 8 {8.} 7 {7.4} Pressure Pa{kgf/cm } 8 {84} 7 {7} 5 {} {5} 4 {4} {.} {} () Q-*0-A- () Q-*0-- () Q-*0-- Pressure ontrol Valve I Pressure. {.}. {.}.0 {0.} 0.9 { 9.} { 8.} () Q-*0-- Pressure Pa {kgf/cm }. {.4}.0 {}.9 {9.4}.8 {8.4}.7 {7.} () Q-*0-- Pressure 5.5 {5.} 5.0 {5.0} 4.5 {45.9} 4.0 {4}.5 {5.7}.0 {} {84} Pressure 0 {0} 9 {9.8} 8 {8.} 7 {7.4} Pressure 7 {7} {} 5 {5} 4 {4} {.} {} O -0

7 ross-sectional rawing Q-**-**- Part o ote) The illustration shows the configuration for pressure adjustment ranges Type, Type, and Type. or Type A and Type, part number plunger is eliminated, and the part number 4 piston, part number 5 spring are different. Seal Part ist (it odel umber RQS-***()) Part ame Type/Part umber Part o. Part ame ody over over 4 Piston 5 Spring Plunger 7 Push rod 8 Screw 9 ut 0 Spacer ameplate Poppet Spring guide 4 Spring 5 Pin Plug 7 Plug 8 Screw 9 O-ring 0 O-ring O-ring O-ring O-ring 4 O-ring ote) Part numbers,, 4, and 4 are not required when there is no check valve. Q-0-**- Q-T0-**- Q-0-**- Q-T0-**- Q-0-**- Q-T0-**- 9 O-ring R-90 P R-90 P R-90 0 R-90 0 R-90 P40 R O-ring R-90 P R-90 P R-90 P R-90 P R-90 P R-90 P 4 O-ring R-90 P R-90 P R-90 P R-90 P R-90 PA R-90 PA O-ring R-90 P0 R-90 P R-90 5 O-ring R-90 P R-90 P R-90 P 4 O-ring R-90 P R-90 P R-90 P4 R-90 P4 R-90 P R-90 P ote) The materials and hardness of the O-ring conforms with IS 40. or the *** part of the kit number, specify the valve size (0, T0). To specify inclusion of a check valve, add to the end. Q'ty Pressure ontrol Valve -