PERSTA shut-off valve
Housing forged from 1.7335, housing seat armored with Stellite 6
Bow lid forged from 1.7335
Lid seal: graphite foil
Cover screws/nuts: 1.4923/1.4923
with rotating, rising spindle made of 1.4021 (Tmax. 550°C)
Flat cone made of 1.7335
Conical seat stellitated
Sealing type flat seat
Stuffing box packing: graphite sleeve
Stuffing box screws/nuts: 1.7225/1.7218
Pressure direction: under the cone
Length: 160 mm
Entry: with welding end for pipe: 33.70 x 3.20 mm
Joint shape according to EN12627 Figure 2 Type B
Da/Di according to EN12627
Exit: with welding end for pipe: 33.70 x 3.20 mm
Joint shape according to EN12627 Figure 2 Type B
Da/Di according to EN12627
Required opening torque: 35 Nm
Required closing torque: 35 Nm
with handwheel O 180.00 mm
Design data:
PN 160 according to DIN 2401 (1966)
Test pressure (open): 240.0 bar
Painting:
Standard paint
Surface treatment: degreasing, sanding or blasting
Substrate = Luberpox 1K zinc dust base color
30 µm to 40 µm
Top coat = Lubersil 1K single coat and top coat paint
30 µm to 40 µm
Total layer thickness up to 80 µm
Color: silver gray/aluminum (similar to RAL 9007)
max. permissible temperature 600°C
Paint manufacturer: Phil.Berger Lack- und chem. Fabrik GmbH
Quality measure:
Requirements:
Fittings of category I - III, according to the Pressure Equipment Directive 2014/68/EU,
Conformity assessment procedure Module H and AD2000 leaflet A4.
Fittings =According to Pressure Equipment Directive 2014/68/EU, Article 4, paragraph (3), (without CE mark)
