Stacking Sequence and Preload Valve, size 5 with integral Bypass Check Valve, Seated Pilot Stage, Spool-type Main Stage, Series SDVB-3 ...
With two--stage -stage 10 mm pressurerelief pressurerelief cartridge cartrid ge DVPA--3 DVPA--3---10... -10. .. S 350 bar, 140 l/min on all ports S
1.
A Also lso availabl available e with with solenoi solenoid d concontrol trolle led d twotwo--pres - pressur sure e cartr cartridg idge e WUVPB WUV PB---3...-3 ...--1 -10 0 S ISO ISO 4401 4401 / CETO CETOP P R35H R35H size size 5, NFPA NFPA D05, DIN 24 340 A10 interface interface
S
Cartridge spring chamber is drained to port T S Optionally available with hand knob, or lockable hand knob, adjuster
S
check valve in models SDVB-- 3 -- .....AR-- 10 10... an d SDVB--3--...BR--10... -10... allows reverse reverse flow from A1 to A, or B1 to B. NOTE: after the connection P → P1 (or A → A1, B → B1) has opened, pilot oil drain flow to T will increase with rising system system pressu pressure re (see (see performa performance nce graphs). Turning model mo del SDVB S DVB---3-3 --AAZR-AA ZR--10 -10 upside side down down about about its its short short axis axis propro-
duces the SDVBSDV B--3 -3---BBAR-BB AR--10 -10 function fu nction and vice versa. Ditto SDVB--3--AAAR-3--AAAR--10 and ...--BBZR... -BBZR... The side--mounted -mounted nameplat nameplate e indiindicates the correct orientation for the required quired function. function. The screwscrew--in design of the the cart cartri ridg dge e valv valve e prov provid ides es for for straight--forward, trouble--free -free maintenance. nance. Interf Interface ace sealin sealing g is by means means of a seal plate p late and 5 O--rings.
Desc Descri ript ptio ion n
Series SDVB--3...SDVB--3...--10 stack valves are used for seq uence-uence-- and preload functions. They are equipped with the twotwo -stage stage pressu pressure re relie relieff cartri cartridge dge type type DVPADVPA--3--10... -10... . When When closed, closed, the valv valves es shut shut off off the the relie elieff path path with with spool--type spool--type leakag e (see per formance graphs) graphs).. Thecartridge Thecartridge spring spring chamber chamber is drained drained to port port T -- the pressur pressure e setting is unaffected by fluctuations of the secon secondar dary y press pressur ure. e. The bypass bypass
2. Symb Symbol ols s P1 T
Valve side
P T
BA
Valve side
B A1
M P
P T
3
1
SDVBSDV B--3 -3 --BBAR -B BAR --10 -1 0 ... B
SDVBSDV B--3 -3 --PP-P P--1 -10 0 ...
P T
BA
P T
B A
2
SDVBSDV B--3 -3 --AAZR -A AZR --10 -1 0 ...
A1
B1 A
5
A
SDVBSDV B--3 -3---AAAR -A AAR --10 -1 0 ...
Valve side
4
SDVBSDV B--3 -3---BBZR -B BZR --10 -1 0 ... B1
3. Main Main charact characteri eristi stics cs Designation Design Mounting method Size Weight Replaces: D--11.20 D--11.20
Stacking pressure sequence valve two-- stage, seated pilot, sliding spool stack mounting ISO 4401 size 5 interface SDVB-- 3 -- PP -- 10 ... = 2,9, SDVB-- 3 -- ...AR / ZR --10 ... = 2,8
kg
1/4
Classification: 430.10.62.32
Mounting attitude Flow direction Operating pressure range Adjustment ranges
unrestricted see symbols ... 350 in P, A, B and T pressure range N = 010 ... 350 pressure range M = 010 ... 210 pressure range L = 010 ... 065
bar bar
Flow rate, Qmax Fluids
l/min
Fluid temperature range Ambient temperature
1 ... 140, see performance limits HL and HLP hydraulic oils to DIN 51 524; for other fluids, please consult BUCHER
C _C
--25 ... +85 --25 ... +85
_
mm2 /s (cSt)
Viscosity range Minimum fluid cleanliness level
10 ... 650, recommended 15 ... 250 18/14 to ISO 4406 / CETOP RP70H; 8 ... 9 to NAS 1638
4. Performance graphs Measured with oil viscosity 33 mm 2 /s (cSt)
350 300 250 ) r a200 b (150 P p100 →50
SDVB--3--PP--10--..N p--Q characteristics with p in T = 0 (bar)
SDVB--3--PP--10--..M p--Q characteristics with p in T = 0 (bar) e c n a m r o t s f r i e i m P l
20
40 60 → Q (l/min)
→50
20 →
350 ) r a300 b ( 250 ) B200 p ( 150 A p100
e c n a m r o t s f r i e m i P l
→50
20 40 60 Q (l/min)
) r a b ( 210 ) B 150 p ( A 100 p
80 100 120 140
3
150
m c ( 100 Q
→ 50
75
150 225 pP (pA, pB) (bar) with pT = 0 (bar) Pilot stage closed
→
300
P30 p
15 →
80 100 120 140
20 →
40 60 Q (l/min)
40 60 Q (l/min)
80 100 120 140
SDVB--3--..AR / ZR--10--..L p--Q characteristics with p in T = 0 (bar) e c n a m r o t s f r i e m i P l
20
s e e d s o a e r m c e n c i n w e o u l f q t e o s l i n P i
e c n a m r o t s f r i e i m P l
65
) r a b45 (
SDVB--3 - ..AR / ZR--10--..M p--Q characteristics with p in T = 0 (bar)
→
Leakage P →P1 A→A1, B→B1
40 60 Q (l/min)
→ 50
→
) n 200 i m /
e c n a m r o t s f r i e m i P l
210
) r a 150 b ( P100 p
80 100 120 140
SDVB--3--..AR / ZR--10--..N p--Q characteristics with p in T = 0 (bar)
SDVB--3 - PP--10--..L p--Q characteristics with p in T = 0 (bar)
) r a b ( 65 ) B45 p ( A30 p
e c n a m r o t s f r i e m i P l
→15
80 100 120 140
20 →
40 60 Q (l/min)
80 100 120 140
∆p--Q
char. A1 →A bzw. B1→B through bypass check valve
Pilot flow to T 2,0
40
w o ) n 1,5 l f i t m / o l l i ( 1,0 P Q
) r 30 a b ( p20
∆ →10
→0,5
50 →
100 150 200 pP (pA, pB) (bar)
Average pilot flow in pressure relief mode approx. 0,33 l/min
250 300
20
40 60 80 100 120 140 Q (l/min) Cracking pressure approx. 0,2 (bar) →
Rate of pressure change when turning the adjusting s crew: SDVB - 3 - .. --10 - ..N:1 turn SDVB - 3 - .. --10 - ..M:1 turn SDVB - 3 - .. --10 - ..L:1 turn
app. 60 (bar) app. 38 (bar) app. 13 (bar)
5. Dimensions
Nameplate
SWISS MADE
M
M10x1
. . . . R R Z A B B B . B . . .
Valve side
. . P P . . 7 , 0 8 5 4 5 2
SDVB --3--PP--10--S
P T
5 , 8 , 7 3 2 2
B A
58
58
3 , 1
max. 50
116 5
Adjuster style S (Standard)
5 A/F int. hex. for pressure adjustment
17 A/F lock nut
27 A/F, tightening torque Ma = 23 ... 27 Nm for fitting the cartridge
max. 166 ( BBAR / BBZR ) max. 171 ( PP )
max. 166 ( AAAR / AAZR ) 31
. . . . R R Z A A A A . A . . .
OPTIONS
Valve side
SWISS MADE
7 , 0 8 5 4
SDVB--3--AAZR--10--S
5 , 8 , 7 3 2 2
Adjuster style H Hand knob (can be fitted later by user)
0 4 ø
B A
P T
max. 37,5 3 , 1
31
31
54
5 , 9 2
ISO 4401 size 5 interface
2 1
47
26
P
A
6 4
ø 6,5
B CV
T
20
2 3 ø
0 7 T
Adjuster style Z4 Lockable hand knob type 2H complies with Volkswagen Factory Sprcification BV 1.09 (factory option only)
Supplied complete with seal plate and 5 O--rings no. 014 ø 12.42 x 1.78
6. Schematic section showing the relevant ports Ex. SDVB --3--BBZR--10 ... 1
B
2
Seal kit no. DS--221, comprising *): Itm. Qty. Qty. Description Size
5
10 11
B1
9 7
3
6
4
8
1
1
1*)
Seal
∅
22,1 x 16,5 x 2,5
2
2
2*)
O--ring no. 020
∅
21,95 x 1,78 N90
3
1
1*)
O--ring
∅
14 x 2
4
1
1*)
O--ring no. 013
∅
10,82 x 1,78 N90
5
1
1*)
O--ring no. 012
∅
9,25 x 1,78 N90
6
2
2*)
Backup ring
∅
13,7/1,5x1,4 FI0751
7
5
5*)
O--ring no. 014
∅
12,42 x 1,78 N90
8
1
1*)
Snap ring
∅
9 type SS
9
-
1*)
O--ring no. 018
∅
18,77 x 1,78 N90
10
-
1*)
O-- ring no. 016
∅
15,60 x 1,78 N90
11
-
1*)
Backup ring
∅
15,3/1,5x1,4 FI0751
SDVB - 3--AAAR/ZR / BBAR/ZR--10 ... SDVB--3 - PP--10 ...
7. Installation and servicing All installation and servicing must be carried out with care, and by qualified personnel only. At installation, be sure to mount the valve with the correct
faces contacting the adjacent units and with allinterface connections lining up properly. When changing seals, the new seals should be thoroughly oiled or
greased before fitting them to thevalve. Use the correct tightening torques when fitting the cartridge.
8. Ordering code
Ex. = stacking valve S = pressure relief function D V = two--stage A ... Q = standard model per current data sheet Z ... R = special features by arrangement 3 = pressure control type 3 PP = function from P to P1 AA = function from A to A1 BB = function from B to B1 A = sequencing from actuator Z = sequencing to actuator R = with bypass check valve 10 = ISO 4401 size 5 interface S = with hex. skt. screw adjuster (standard) H = with hand knob adjuster Z = with lockable hand knob adjuster type Z4 N = pressure range 10 ... 350 bar (Normal) M = pressure range 10 ... 210 bar (Medium) L = pressure range 10 .... 65 bar (Light) (blank) = Nitrile seals (standard) = Viton seals V Special seals by arrangement
S D V B -- 3 -- AA Z R - 10 - S N _
...AR... and ...ZR... only ...AR... and ...ZR... only
9. Related data sheets Old no.
New no.
i-- 00
400-- P--010101-- E
Table of interface equivalents
i-- 41
400-- P-- 050101-- E
DIN 24 340 size A10 interface
D--4.33
400--P--280121--E
Two--stage pressure relief cartridge, 10 mm, series DVPA--3--10 ...
G-- 45
400-- P--810901-- E
Seal plate type DB-- 10
[email protected] 2015
www.bucherhydraulics.com
by Bucher Hydraulics AG Frutigen, CH-3714 Frutigen
All rights reserved. Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual improvement, we reserve the right to amend the product specifications contained in this catalogue.
