Stainless steel washers, predrilled (d = 3 mm), for flange unions
Designation Order no.
Orifice for DN 65, d = 3 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35440882
Orifice for DN 80, d = 3 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35440376
Orifice for DN 100, d = 3 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35440377
Orifice for DN 125, d = 3 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35456293
Orifice for DN 150, d = 3 mm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35440378
Orifice assemblies MBO
e.g. for measurement of gas flow rates on burners BBG, made of heat-resistant stainless
steel, for fitting between two flanges, MBO with orifice diameter according to customer
requirements without flow rate curve, drilling tolerance ±0.2 mm.
Designation Order no.
MBO 80, d = 32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74924087
MBO 80, d = 42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74924089
MBO 80, d according to customer requirements . . . . . . . . . . . . . . 74924145
MBO 100, d = 52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74924088
MBO 100, d = 62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74924090
MBO 100, d according to customer requirements . . . . . . . . . . . . . 74924146
10 Accessories
2-102
 
Stainless steel bellows units EKO
Type code
EKO Stainless steel bellows unit
15-200 Nominal size
RI Rp internal thread
RA R external thread
F10P Flange with bore holes to PN 16, pu max. 1 bar
F100P Flange with bore holes to PN 16, pu max. 10 bar
F Flange with bore holes to PN 10, pu max. 10 bar
Z Hot-galvanized
Stainless steel bellows units for stress-free pipe installation and to prevent transmission
of vibration, for gas, air and water, with restricting orifice if desired, DVGW tested and
registered.
Designation Order no.
High temperature resistant (HTR) version, cap screws
with REINZ-AFM 34 type seal to DIN 3535, Part 6, at both
ends, for gas: pu max. 4 bar, for air: pu max. 10 bar
EKO 15RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262041
EKO 20RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262043
EKO 25RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262045
EKO 32RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262047
EKO 40RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262049
EKO 50RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262051
EKO 15RI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262042
EKO 20RI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262044
EKO 25RI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262046
EKO 32RI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262048
EKO 40RI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262050
EKO 50RI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262052
High temperature resistant (HTR) version only in conjunction with WL-HT type flange seal (not included in the
delivery), with flanges at both ends, cold-galvanized, for
gas and air, EKO 250 and EKO 350 for air only
EKO 25F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262053
EKO 32F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262054
EKO 40F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262055
EKO 50F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262056
EKO 65F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 03262057