S e r i e s S R D B . . .
2 6 0 l / m i n , 3 5 0 b a r
M e t e r - i n f l o w c o n t r o l i n A , B o r A a n d B
I n t e r f a c e t o I S O 4 4 0 1 / C E T O P R 3 5 H s i z e 0 7 , N F P A D 0 7 , D I N 2 4 3 4 0 A 1 6
M - 2 8 A
a
S t a c k i n g T h r o t t l e / C h e c k V a l v e , I S O s i z e 7
S Y M B O L S
M E T E R - O U T C O N T R O L
P T B
V a l v e s i d e
X
A
1
P T B
V a l v e s i d e
X A
2
P T B
V a l v e s i d e
X YA
3
Y
S R D B - A A - 1 6
S R D B - B A - 1 6
S R D B - A B A - 1 6
D I M E N S I O N S - M E T E R - O U T F U N C T I O N S
P
A
B
T
A
B
P
T
A p p l i c a t i o n e x a m p l e
M e t e r - o u t c o n t r o l
( S R D B - A B A - 1 6 )
I S O 4 4 0 1 s i z e 7 i n t e r f a c e
5 5
S R D B - A A - 1 6 : m a x . 1 9 7 , 5
S R D B - B A - 1 6 : m a x . 1 9 7 , 5
S R D B - A B A - 1 6 : m a x . 2 4 0
1 , 5
2 , 1
33 6 . . . 4 2 , 5 1 5 5
ø 2 6 , 5 ø 1 4
1 0 1 , 6
3 4 , 1
2 7 , 5
5 0
9 0
6 9 , 9
1 0
5 4
1 , 6
ø 7
ø 1 0 , 5
T P
A
B
X
Y
8 A / F i n t . h e x . f o r
t h r o t t l e a d j u s t m e n t
P l u g s c r e w
1 9 A / F i n t . h e x .
T i g h t e n i n g t o r q u e
M a = 1 4 0 . . . 1 6 0 N m
N a m e p l a t e
L o c a t i o n p i n
4 1 A / F h e x .
T i g h t e n i n g t o r q u e
M a = 1 4 0 . . . 1 6 0 N m
Y
8 0
L o c k n u t
2 4 A / F
4 0 0 - 2 - 0 0 1 8 8 2 B S U B J E C T T O C H A N G E W I T H O U T N O T I C E I s s u e 0 7 - 0 2
1 / 4
S W I S S M A D E
P T B
X
A
Y
M e t e r - o u t f l o w c o n t r o l i n A , B o r A a n d B
m a x . 6 5 , 5
ø 5 0
O p t i o n :
A d j u s t e r s t y l e
H
H a n d k n o b
S R D B - A A - 1 6
D i r e c t i o n a l v a l v e s i d e
D E S C R I P T I O N
T h e s e t h r o t t l e / c h e c k v a l v e s u s e t h e w e l l
k n o w n ' s a n d w i c h ' p r i n c i p l e - t h e y a r e
m o u n t e d b e t w e e n a d i r e c t i o n a l v a l v e
a n d a n o t h e r c o n t r o l m o d u l e o r t h e s u b -
p l a t e .
T h e t h r o t t l e / c h e c k e l e m e n t s a l l o w v a r i -
a b l e r e s t r i c t i o n o f t h e f l o w l e a v i n g t h e
a c t u a t o r ( ' m e t e r - o u t ' f l o w c o n t r o l ) .
F l o w e n t e r s t h e a c t u a t o r w i t h o u t r e s t r i c -
t i o n t h r o u g h t h e i n t e g r a l c h e c k v a l v e .
T h e m e t e r - o u t f u n c t i o n c r e a t e s a ' h y d -
r a u l i c r e s t r a i n t f o r t h e a c t u a t o r f o r c a s e s
w h e r e t h e e x t e r n a l l o a d v a r i e s g r e a t l y ,
p e r h a p s e v e n b e c o m i n g n e g a t i v e
( s y m b o l s 1 . . . 3 ) .
S e a l i n g a t t h e m a n i f o l d - s i d e ( b o t t o m )
i n t e r f a c e i s b y m e a n s o f O - r i n g s f i t t e d i n
c o u n t e r b o r e s i n t h e s t a c k i n g b o d y .
Issure: 09.2015
S U B J E C T T O C H A N G E W I T H O U T N O T I C E M - 2 8 A
2 / 4
S Y M B O L S
M E T E R - I N C O N T R O L
P T B
V a l v e s i d e
X
A
4
P T B
V a l v e s i d e
X A
5
P T B
V a l v e s i d e
X YA
6
Y
S R D B - A Z - 1 6
S R D B - B Z - 1 6
S R D B - A B Z - 1 6
D I M E N S I O N S - M E T E R - I N F U N C T I O N
P
A
B
T
A
B
P
T
A p p l i c a t i o n e x a m p l e
M e t e r - i n c o n t r o l
( S R D B - A B Z - 1 6 )
I S O 4 4 0 1 s i z e 7 i n t e r f a c e
2 5
S R D B - A A - 1 6 : m a x . 1 9 7 , 5
S R D B - B A - 1 6 : m a x . 1 9 7 , 5
S R D B - A B A - 1 6 : m a x . 2 4 0
1 , 5
33 6 . . . 4 2 , 5 1 5 5
ø 2 6 , 5 ø 1 4
1 0 1 , 6
3 4 , 1
2 7 , 5
5 0
9 0
6 9 , 9
1 0
5 4
1 , 6
ø 7
ø 1 0 , 5
T P
A
B
X
Y
8 A / F i n t . h e x . f o r
t h r o t t l e a d j u s t m e n t
P l u g s c r e w
1 9 A / F i n t . h e x .
T i g h t e n i n g t o r q u e
M a = 1 4 0 . . . 1 6 0 N m
N a m e p l a t e
L o c a t i o n p i n
4 1 A / F h e x .
T i g h t e n i n g t o r q u e
M a = 1 4 0 . . . 1 6 0 N m
Y
8 0
L o c k n u t
2 4 A / F
S W I S S M A D E
P T B
X
A
Y
2 , 1
S R D B - A Z - 1 6
m a x . 6 5 , 5
ø 5 0
O p t i o n :
A d j u s t e r s t y l e
H
H a n d k n o b
D E S C R I P T I O N
T h e s e t h r o t t l e / c h e c k v a l v e s u s e t h e w e l l
k n o w n ' s a n d w i c h ' p r i n c i p l e - t h e y a r e
m o u n t e d b e t w e e n a d i r e c t i o n a l v a l v e
a n d a n o t h e r c o n t r o l m o d u l e o r t h e s u b -
p l a t e .
T h e t h r o t t l e / c h e c k e l e m e n t s a l l o w v a r i -
a b l e r e s t r i c t i o n o f t h e f l o w e n t e r i n g t h e
a c t u a t o r ( ' m e t e r - i n ' f l o w c o n t r o l ) .
F l o w l e a v e s t h e a c t u a t o r w i t h o u t r e s t r i c -
t i o n t h r o u g h t h e i n t e g r a l c h e c k v a l v e .
T h e m e t e r - i n f u n c t i o n i s n o r m a l l y u s e d
w h e n t h e r e i s a s t e a d y r e s i s t a n c e f r o m
t h e c y l i n d e r o r m o t o r ( s y m b o l s 4 . . . 6 ) .
S e a l i n g a t t h e m a n i f o l d - s i d e ( b o t t o m )
i n t e r f a c e i s b y m e a n s o f O - r i n g s f i t t e d i n
c o u n t e r b o r e s i n t h e s t a c k i n g b o d y .
D i r e c t i o n a l v a l v e s i d e
M - 2 8 A S U B J E C T T O C H A N G E W I T H O U T N O T I C E
3 / 4
S C H E M A T I C S E C T I O N
s h o w i n g t h e r e l e v a n t p o r t s ( E x . S R D B - A A - 1 6 )
A B Y
* ) = p a r t o f s e a l k i t n o . D S - 2 7 0
= a v a i l a b l e a s s e r v i c e p a r t
C O M P O N E N T S / S E R V I C E P A R T S
I t . Q t y .
1
1 S t a c k i n g b o d y
2 . 5
G u i d e n u t
9 0 x 8 0 x 1 5 5
4 1 A / F h e x . × 3 7
- - P l u g s c r e w M 3 6 x 1 , 5
4
2 H e x . n u t
6
7
8
2
O - r i n g n o . 1 1 8 ø 2 1 , 8 9 x 2 , 6 2
2 * ) O - r i n g n o . 0 1 5 ø 1 4 , 0 0 x 1 , 7 8
R o l l p i n ( h e a v y ) ø 3 x 8
S e a l k i t n o . D S - 2 7 0 , c o m p r i s i n g * )
2 * ) B a c k u p r i n g ø 1 8 / 1 5 , 2 x 1 , 2
A d j u s t i n g s c r e w
S p r i n g
ø 1 8 x 8 1 , 8
1 , 4 x 2 8 , 2 x 2 7
1
1
2
1 * * )
3
4 * ) 4
t y p e X 3 - 1 6
O - r i n g n o . 1 2 4
S R D B - A B A - 1 6
S R D B - A A - 1 6 / S R D B - B A - 1 6
D e s c r i p t i o n
i G = 4
M 1 6 x 1 , 5
D I N 9 0 8
D I N 4 3 9 B
D I N 7 3 4 4
ø 3 1 , 4 2 x 2 , 6 22 * ) N 9 0
N 9 0
N 9 0
2 . 3 5 6 8 7 2 . 2
2 . 1 2 . 4 9
36
1 0 14
I N S T A L L A T I O N A N D S E R V I C I N G
M A I N C H A R A C T E R I S T I C S
O p e r a t i n g p r e s s u r e . . . 3 5 0 b a r i n P , A , B a n d T
F l u i d s h y d r a u l i c o i l s H L a n d H L P t o D I N 5 1 5 2 4
o t h e r f l u i d s - c o n t a c t B H F R U
M i n . f l u i d c l e a n l i n e s s 1 8 / 1 4 t o I S O 4 4 0 6 / C E T O P R P 7 0 H
8 . . . 9 t o N A S 1 6 3 8
F l u i d t e m p e r a t u r e r a n g e - 2 0 ° . . . + 6 0 ° C
T y p e s t a c k i n g t h r o t t l e / c h e c k v a l v e
D e s i g n s p o o l t y p e
M o u n t i n g m e t h o d s t a c k m o u n t i n g
S i z e I S O 4 4 0 1 s i z e 0 7 , n o m i n a l 1 6 m m
M a s s S R D B - A A / - A Z / S R D B - B A / - B Z = 7 . 3 5 k g
S R D B - A B A / S R D B - A B Z = 7 . 7 0 k g
M o u n t i n g a t t i t u d e u n r e s t r i c t e d
F l o w d i r e c t i o n s e e s y m b o l s
V i s c o s i t y r a n g e 1 0 . . . 3 0 0 c S t
C r a c k i n g p r e s s u r e t h r o u g h c h e c k v a l v e a p p r o x . 0 . 7 b a r
F l o w r a t e Q m a x . 2 6 0 l / m i n
2 2 F u n c t i o n a l i n s e r t R D B - 1 6 , c o m p r i s i n g * * )1
1 0 2 * ) O - r i n g ø 1 0 , 0 0 x 2 , 0 02 N 9 0
9
1 * * )
2 * * )
5 2 * ) S n a p r i n g ø 1 4 t y p e S S1 * * )
1 * * )
2 . 4
2 . 3
2 . 2
2 . 1
2 1 * * )
2 1 * * )
2 1 * * ) M e t e r i n g s l e e v e ø 2 8 x 3 3
2 1 * * )
2 . 5
M U S T B E C A R R I E D O U T W I T H C A R E ,
A N D B Y Q U A L I F I E D P E R S O N N E L O N L Y
A t i n s t a l l a t i o n , m a k e s u r e t h a t t h e v a l v e
i n t e r f a c e s a l i g n w i t h t h e i n t e r f a c e s o f t h e
m a t i n g s u r f a c e s a n d d o n o t c o n f u s e t h e
d i r e c t i o n a l v a l v e ( ' t o p ' ) a n d m a n i f o l d
( ' b o t t o m ' ) f a c e s o f t h e v a l v e .
W h e n c h a n g i n g s e a l s , t h e n e w s e a l s
m u s t b e t h o r o u g h l y o i l e d o r g r e a s e d
b e f o r e f i t t i n g t h e m t o t h e v a l v e .
U s e t h e s p e c i f i e d t i g h t e n i n g t o r q u e w h e n
f i t t i n g t h e g u i d e n u t i t e m 2 . 1 a n d t h e
p l u g s c r e w i t e m 3 .
S R D B - A B Z - 1 6
S R D B - A Z - 1 6 / S R D B - B Z - 1 6
- - - -
1 1 - - - - S t a c k i n g b o d y 9 0 x 8 0 x 1 5 5 t y p e X Z 3 - 1 6
2 1
2 1
2 1
2 1
2 1
2 1
- - 1
2 2
2 1
2 2
2 1
2 1
2 2
4 4
1 1
( 2 ) ( 2 ) ( 1 )( 1 )1 1 H a n d k n o b , c o m p l e t e ( o p t i o n )
T O O R D E R S E R V I C E P A R T S , S T A T E :
- c o m p l e t e u n i t m o d e l c o d e f r o m t h e n a m e p l a t e
i n c l u d i n g t h e d e s i g n n u m b e r
- d a t a s h e e t n u m b e r , i n c l u d i n g i s s u e d a t e
- p a r t i t e m n u m b e r f r o m a b o v e l i s t
- p a r t d e s c r i p t i o n f r o m a b o v e l i s t
- q u a n t i t y r e q u i r e d
S U B J E C T T O C H A N G E W I T H O U T N O T I C E M - 2 8 A
4 / 4
G e r m a n y
T e l . : + 4 9 7 7 4 2 8 5 2 0
F a x : + 4 9 7 7 4 2 7 1 1 6
i n f o . d e @ b u c h e r h y d r a u l i c s . c o m
U K
T e l . : + 4 4 2 4 7 6 3 5 3 5 6 1
F a x : + 4 4 2 4 7 6 3 5 3 5 7 2
i n f o . u k @ b u c h e r h y d r a u l i c s . c o m
B U C H E R H Y D R A U L I C S
w w w . b u c h e r h y d r a u l i c s . c o m
F r a n c e
T e l . : + 3 3 3 8 9 6 4 2 2 4 4
F a x : + 3 3 3 8 9 6 5 2 8 7 8
i n f o . f r @ b u c h e r h y d r a u l i c s . c o m
U S A
T e l . : + 1 2 6 2 6 0 5 8 2 8 0
F a x : + 1 2 6 2 6 0 5 8 2 7 8
i n f o . w i @ b u c h e r h y d r a u l i c s . c o m
S w i t z e r l a n d
T e l . : + 4 1 3 3 6 7 2 6 1 1 1
F a x : + 4 1 3 3 6 7 2 6 1 0 3
i n f o . c h @ b u c h e r h y d r a u l i c s . c o m
N e t h e r l a n d s
T e l . : + 3 1 7 9 3 4 2 6 2 4 4
F a x : + 3 1 7 9 3 4 2 6 2 8 8
i n f o . n l @ b u c h e r h y d r a u l i c s . c o m
C h i n a
T e l . : + 8 6 1 0 6 8 3 1 4 1 0 8
F a x : + 8 6 1 0 6 8 3 1 4 1 2 1
i n f o . b j @ b u c h e r h y d r a u l i c s . c o m
I t a l y
T e l . : + 3 9 0 5 2 2 9 2 8 4 1 1
F a x : + 3 9 0 5 2 2 5 1 3 2 1 1
i n f o . i t @ b u c h e r h y d r a u l i c s . c o m
P r o d u c t C e n t e r ( E l e v a t o r H y d . )
T e l . : + 4 1 4 1 7 5 7 0 3 3 3
F a x : + 4 1 4 1 7 5 7 0 5 0 0
i n f o . n h @ b u c h e r h y d r a u l i c s . c o m
A u s t r i a
T e l . : + 4 3 6 2 1 6 4 4 9 7
F a x : + 4 3 6 2 1 6 4 4 9 7 4
i n f o . a t @ b u c h e r h y d r a u l i c s . c o m
P E R F O R M A N C E D A T A
m e a s u r e d w i t h o i l v i s c o s i t y 3 3 c S t
M O D E L C O D E K E Y E x . S R D B - - 1 6 _ - 1
A
A B
S t a c k m o u n t i n g v a l v e
T h r o t t l e / c h e c k f u n c t i o n
A . . . Q
Z . . . R
=
=
s t a n d a r d m o d e l p e r r e l e v a n t d a t a s h e e t
s p e c i a l f e a t u r e s b y a r r a n g e m e n t
A
B
A B
=
=
=
f u n c t i o n i n A
f u n c t i o n i n B
f u n c t i o n i n A a n d B
A
Z
=
=
m e t e r - o u t f u n c t i o n ( s e e s y m b o l s 1 . . . 3 )
m e t e r - i n f u n c t i o n ( s e e s y m b o l s 4 . . . 6 )
1 6 = I S O 4 4 0 1 s i z e 0 7 i n t e r f a c e , n o m i n a l 1 6 m m
( b l a n k ) = N i t r i l e s e a l s (
s t a n d a r d
)
V
S p e c i a l s e a l s b y a r r a n g e m e n t ( c o n t a c t B H F R U )
=
V i t o n s e a l s
1 . . . 9 = d e s i g n n o . ( o m i t w h e n o r d e r i n g )
R E L A T E D D A T A S H E E T S
i - 5 1
i - 0 0
D I N 2 4 3 4 0 A 1 6 i n t e r f a c e
T a b l e o f i n t e r f a c e e q u i v a l e n t s
2 0 4 0 6 0 8 0 1 0 0 1 8 0 2 2 0 2 6 0
2
4
Q ( l / m i n )
, p ( b a r )
T h r o t t l e
c l o s e d ,
t h r o ' C V
C r a c k i n g p r e s s u r e t h r o ' C V a p p . 0 , 8 b a r
5 0
Q ( l / m i n )
, p - Q c h a r a c t e r i s t i c s
T h r o t t l e c l o s e d
( l e a k a g e 0 , 3 . . . 0 , 5 l / m i n )
1 0 0
1 5 0
2 0 0
2 5 0
3 0 0
,
p ( b a r )
, p - Q c h a r a c t e r i s t i c s
a t s e v e r a l f i x e d t h r o t t l e s e t t i n g s
T h r o t t l e o p e n i n g
i n n o . o f t u r n s
0 1
1 / 4 1 1 / 2 1 3 / 4 2
2
1 / 4
2 1 / 2
2
3 / 4
3
T h r o t t l e
o p e n ,
t h r o ' C V
6
8
1 0
1 2
1 4
1 6
1 4 0
2 0 4 0 6 0 8 0 1 0 0 1 8 0 2 2 0 2 6 01 4 0
3 1 / 2
_
( b l a n k ) = h e x . s k t . s c r e w a d j u s t e r (
s t a n d a r d
)
H
=
h a n d k n o b a d j u s t e r ( o p t i o n )
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© 2015 by Bucher Hydraulics AG Frutigen, CH-3714 Frutigen
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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.
4/4
Issure: 09.2015
