Gestra WB26

Swing check valves WB 26/26A

Data Sheet 810415-02 Issue Date: 01/14
a
DISCO Swing Check Valves
WB 26, WB 26A, WB 24S for Flanges PN 10/16 Application
WB 26:
WB 26 A:
WB 24 S:
for liquids, gases and vapours for aggressive fluids for sea water
ØD
Ø do
Pressure / Temperature Ratings Nominal pressure
PN
16
Design with O-rings1)
NBR
Max. service pressure Related temperature
16 [bar] (230 psig) 110 [°C] (230 °F)
Min. temperature2)
– 10 [°C] (14 °F)1
) O-rings in flap and valve faces made of NBR as standard.
) Minimum temperature for nominal pressure rating.
1 2
L
Connection Standard valves for fitting between flanges to DIN 2501, PN 10/16.
Install wafer-type valves only in horizontal lines or in vertical lines with upward flow. When the valve is completely open the
flap contacts the inside of the downstream pipe.
Dimensions Nominal size
Dimensions in [mm]
[mm]
[inch]
L
∅D
Weight3) ∅ dO
a
[kg]
50
12
14
109
135.5,
132
10.95
65
12 ½
14
129
148.5,
140
11.21
80
13
14
144
160.5,
154
11.61
100
14
18
164
178.5,
170
12.51
125
15
18
195
198.5,
192
13.51
150
16
20
220
116.5
112
14.71
200
18
22
275
160.5
154
17.61
250
10
26
330
200.5
200
13.21
300
12
32
380
235.5
240
20.51
3 ) The weight ratings apply for WB 26 and WB 26 A. WB 24 S reduced by approx. 5 %

Materials Designation
WB 26
Body and flap
WB 26 A
WB 24 S
DIN equivalent
AISI 420
X46Cr13 (1.4034)
galvanised
galvanised
Body
AISI 316
X 5CrNiMo17-12-2 (1.4401)
Flap
A 351 CF 8M
G-X6CrNiMo18-10 (1.4408)


ASTM reference
Body and flap
O-rings
Aluminium bronze
NBR as standard