ball valve Art. 550 S
----------------- 		  B.R.V.bonetti rubinetterie valduggia
Loc. Molino Rastelli, 2 I-13018 VALDUGGIA (VC) ITALY
Tel. +39 0163 48062 - Fax +39 0163 48188
http://www.brv.it - email: info@brv.it

550 S


550 S/2

Ball valve for circulating pumps in hot forged brass. Nickel plated.
Coupling flange for 1" pumps.
Art. 550 S/2 with built-in check valve with external adjustment control.
 Brass nut of 1"1/2 and gasket available on demand.
Art. 550 S: PN 30. Max. 150°C.
Art. 550 S/2: PN 16. Max. 95°C.
End threaded to ISO 228 (DIN 259 BSP 2779).
Steel T-handle.
Sizes: from 3/4" up to 1"1/4
  Art. 550 S Art. 550 S/2
WORKING PRESSURE
 		   
for saturated steam (+150°C) 5 bar -
for water, oil and non aggressive fluids (+25°C) 30 bar 16 bar
minimum pressure for check valve opening - 20 mbar
max. backflow direction pressure - 3.5 bar
WORKING TEMPERATURE
 		   
Min. -20°C Max.+150°C Max.+95°C
TEST PRESSURE
 		   
seal pneumatic test 6.5 bar 6.5 bar

Dimensions
Dimensions
Rightflow direction (S/2)
COMPONENTS MATERIAL-TREATMENT Q.
Handle
Nut
Stem
Packing gland
Stem O-ring
Body
External control stem (S/2)
Stem-seal O-ring (S/2)
Check valve (S/2)
Ball seals
Ball
Tailpiece
 		Steel; Epxoy resin painted
Brass P-CuZn40Pb2; Nickel plated
Brass P-CuZn40Pb2
Brass P-CuZn40Pb2
E.P.D.M. Peroxid
Brass P-CuZn40Pb2; Nickel plated
Brass P-CuZn40Pb2
E.P.D.M. Peroxid
Acetalic resin
P.T.F.E.
Brass P-CuZn40Pb2; Chrome plated
Brass P-CuZn40Pb2; Nickel plated
 1
1
1
1
2
1
1
1
1
2
1
1

Size
Flange		 3/8"
-		 1/2"
-		 3/4"
1"		 1"
1"		 1"
1"¼		 1"¼
1"		 1"¼
1"¼		 1"½
-		 2"
-
Nut (H)
A
B
F
G
CH
DN
(S) Gr.
(S/2) Gr.
 -
-
-
-
-
-
-
-
-
 		-
-
-
-
-
-
-
-
-
 		1"½
72
13
50
41
31
20
315
315
 		1"½
76
12.5
50
41
38.5
20
345
345
 		-
-
-
-
-
-
-
-
-
 		1"½
79
14
50
41
47.5
20
400
400
 		-
-
-
-
-
-
-
-
-
 		-
-
-
-
-
-
-
-
-
 		-
-
-
-
-
-
-
-
-
M.Carton                  
550S,S/2 -
 		-
 		90
 		90
 		-
 		75
 		-
 		-
 		-
DOC. 04.02 10/11/03