Thies Safety Valves
Maximum blow-off rate due to low flow losses -
This was the principle governing the development of the THIES High-efficiency Safety Valves
Special research led to the development of a simple construction of the flow passages leading to optimum efficiency and performance.
High functional and operational reliability due to a very simple configuration.
Operation description
High blow-off rate due to low flow losses.
Reliable valve response.
Favourable closing pressure differential.
No auxiliary lifting required for 341 + 356/357 + 390/391 + 392/393 series.
Corrosion-resistant spindle bushes.
Abrasion and corrosion resistant sealing surfaces.
Centrally applied closing force.
Available in: grey cast iron, spheroidal graphite iron, cast steel and stainless steel.
Models
341 type approval (D/G/H) (steam/gas/heating system)
for heating systems according to EN 12828 / TRD 721
356 / 357 type approval (D/G) (steam/gas)
spring loaded for steam and gas and other heating systems according to EN 12828 / TRD
360 / 361 type approval (F) (liquids)
spring loaded for liquids and district heating systems
390 / 391 type approval (D) (steam)
weight loaded according to EN 12828 - 0,5 bar / TRD 721
392 type approval (D) (steam)
weight loaded according to EN 12828 - 1 bar / TRD 721
393 type approval (D) (steam)
spring loaded according to EN 12828 - 1 bar / TRD 721
THIES Spring loaded Diaphragm type High-efficiency Safety Valves
341 type approval (D/G/H) (steam/gas/heating system) for heating systems
according to EN 12828 / TRD 721
Application:
Safety valve to satisfy safety requirements in heating systems with flow temperatures of 120°C according to EN 12828.
THIES High-efficiency Safety Valves satisfy the German requirements of the following specifications: UVV- “Pressure Vessels“, AD Specification A 2 „Safety Valves“, the Technical Rules for Steam Boilers (TRD), SR Safety Valves and EN 12828.
Construction
Spring loaded, diaphragm type, high-efficiency safety valve, angled, with highly elastic seal and metal backing in the valve head
Series 341 with closed bonnet
Valve head is liftable. The pressure acts, via a ball, centrally onto the valve head. Corrosion-resistant spindle bushes ensure reliable and precise response of the valve.
Flange connections:
Grey cast iron version: inlet and outlet according to DIN 2533 PN 16
Spheroidal graphite iron version and cast steel version:
inlet as per DIN 2545 PN 40
outlet as per DIN 2543 PN 16
The safety valves are provided with a drain plug:
up to DN 50 - R 1/4 ".
over DN 65 - R 3/8 ".
Valve head with highly elastic seal and metal backing.
Leading to:
Better tightness.
Less sensitivity to fouling.
Reliable response due to metal backing.
High strength and high resistance owing to highly elastic seal embedded by vulcanizing.
THIES Spring loaded High-efficiency Safety Valves
356 / 357 type approval (D/G) (steam/gas), spring loaded for steam and gas and other heating systems according to EN 12828 / TRD
Application:
As safety valves for steam, gases and hot water
in pressure vessels and steam boilers. Application also in accordance with DIN 4752.
Range of use:
Grey cast iron up to 300°C
Spheroidal graphite iron up to 350°C
Cast steelup to 400°C
Stainless steel up to 550°C
THIES High-efficiency Safety Valves meet the following German requirements: Pressure Vessel Safety Regulations, AD Specification A 2 for „Safety Valves", the Technical rules for steam boilers (TRD) and the Safety Valves Code.
Construction:
Spring loaded high-efficiency safety valve, angled.
Series 356 gastight version.
Series 357 version with closed bonnet.
Liftable valve head. Force is transmitted centrally at the valve head via ball. Corrosion-resistant spindle guides ensure reliable and precise response of the valve.
Flange connections
Grey cast iron version: inlet and outlet as per DIN 2533 PN 16
Spheroidal graphite iron version, cast steel version and stainless steel version
inlet as per DIN 2545 PN 40
outlet as per DIN 2543 PN 16
The safety valves are provided with a drain plug:
up to DN 50 - R 1/4 ".
over DN 65 - R 3/8 "
THIES Spring loaded High-efficiency Safety Valves
360 / 361 type approval (F) (liquids), spring loaded for liquids and district heating systems
Application:
Safety valves for blowing-off liquid from fixed pressure vessels, subject to the condition that no evaporation occurs. Also suited to district heating systems. If the liquid to be blown off does not have similar properties to the liquid (water) used in the valve testing procedure, then the properties of the liquid, in respect to chemical aggressiveness or sticking tendency, must be taken into account in the acceptance testing of the pressure vessel.
THIES High-efficiency Safety Valves meet the requirements of the German Pressure Vessel Safety Regulations and AD Specification A 2 „Safety Valves“.
Construction:
Spring loaded high-efficiency valves, angled, with
O-ring seal in the valve head.
Series 360
with closed protective bonnet and closed lift housing.
Series 360
with closed protective bonnet and closed lift housing.
Series 361
with closed protective bonnet and open lift housing.
Valve head is liftable. Force is transmitted centrally at the valve head. Corrosion-resistant spindle guides ensure reliable and precise response of the valve.
Flange connections:
Spheroidal graphite iron version:
inlet as per DIN 2533 PN 16 = DIN 2545 PN 40
outlet as per DIN 2543 PN 16
The safety valves are provided with a drain plug size R 1/4 "
THIES Diaphragm type High-efficiency Safety Valves
390 / 391 type approval (D) (steam), weight loaded according to EN 12828 - 0,5 bar / TRD 721
392 type approval (D) (steam), weight loaded according to EN 12828 - 1 bar / TRD 721
390 / 391
Application:
These safety valves are for blowing-off saturated steam from pressure generators.
THIES-Diaphragm High-efficiency Safety Valves meet the following German requirements: the AD Specification A 2 for „Safety Valves“, the Technical rules for steam boilers (TRD), the Safety Valve Code according to EN 12828.
Response overpressure: 0,5 bar.
Alternatively: 0,1 - 0,5 bar.
Constructions
Weight loaded, diaphragm type, high-efficiency safety valve, angled, with highly elastic seal and metal backing in valve head.
Series 390/391 with closed bonnet.
Liftable valve head. Force is transmitted centrally at the valve head via ball. Corrosion-resistant spindle guides ensure reliable and precise response of valve.
Flange connections:
Grey cast iron version: inlet and outlet as per DIN 2533 PN 16
Spheroidal graphite iron version, cast steel version and stainless steel version:
inlet as per DIN 2545 PN 40
outlet as per DIN 2543 PN 16
The safety valves are provided with a drain plug:
up to DN 50 - R 1/4 ".
over DN 65 - R 3/8 ".
392
Application:
These safety valves are for blowing-off saturated steam from pressure generators.
THIES-Diaphragm High-efficiency Safety Valves meet the following German requirements: the AD Specification A 2 for „Safety Valves“, the Technical rules for steam boilers (TRD 721), the Safety Valves Code according to EN 12828.
Response overpressure: 1 bar.
Alternatively: 0,55 - 1 bar.
Constructions:
Weight loaded, diaphragm type, high-efficiency safety valve, angled, with highly elastic seal and metal backing in valve head.
Series 392 with closed bonnet.
Valve head is liftable. Force is transmitted centrally at valve head via a ball. Corrosion-resistant spindle guides ensure reliable and precise response of the valve.
Flange connections:
Grey cast iron version: inlet and outlet as per DIN 2533 PN 16
Spheroidal graphite iron version, cast steel version and stainless steel version:
inlet as per DIN 2545 PN 40
outlet as per DIN 2543 PN 16
The safety valves are provided with a drain plug of size R 1/4 " up to nom. diam. 50 mm.
THIES Diaphragm type High-efficiency Safety Valves
393 type approval (D) (steam), spring loaded according to EN 12828 - 1 bar / TRD 721
Application:
These safety valves are for blowing-off saturated steam from pressure generators.
THIES-Diaphragm High-efficiency Safety Valves meet the following German requirements: the AD Specification A 2 for „Safety Valves“, the Technical rules for steam boilers (TRD 721), the Safety Valves Code according to EN 12828.
Response overpressure: 1 bar.
Constructions:
Spring loaded, diaphragm type, high-efficiency safety valve, angled, with highly elastic seal and metal backing in valve head.
Series 393 with closed bonnet.
Valve head is liftable. Force is transmitted centrally at valve head via a ball. Corrosion-resistant spindle guides ensure reliable and precise response of the valve.
Flange connections:
Grey cast iron version: inlet and outlet as per DIN 2533 PN 16
Spheroidal graphite iron version and cast steel version:
inlet as per DIN 2545 PN 40
outlet as per DIN 2543 PN 16
The safety valves are provided with a drain plug:
up to DN 50 - R 1/4 ".
over DN 65 - R 3/8 ".
Herose säkerhetsventiler
Type 06317 - Safety Valve
Safety Valves, angle type, stainless steel,
type tested, TÜV.SV.847. D/G/F (G 3/8 - G 1/2)
type tested, TÜV.SV.878. D/G/F (G 3/4 - G 1-1/4)
metal to metal seated, closed bonnet,
Inlet: male thread type G (BSPP) acc. to ISO 228/1
Outlet: femaile thread type G (BSPP) acc. to ISO 228/1
Part No. 06317.X.0000
with lifting device - head A
Part No. 06317.X.0020
with gastight cap - head C
Applications:
Provided as safety device for protection against excessive pressure
in pressure vessels.
Approved for gases, vapours and fluids.
Working temperatures: -60°C / -76°F (213K) up to +280°C / +536°F (553K)
Essential:
Valves are delivered at a set pressure, therefore when ordering
please confirm set pressure, medium and temperature.
Standard marking acc. to Pressure Equipment Directive 97/23/EC (PED).
Safety Valves, angle type, stainless steel,
type tested, TÜV.SV.847. D/G/F (G 3/8 - G 1/2)
type tested, TÜV.SV.878. D/G/F (G 3/4 - G 1-1/4)
metal to metal seated, closed bonnet,
Inlet: male thread type G (BSPP) acc. to ISO 228/1
Outlet: femaile thread type G (BSPP) acc. to ISO 228/1
Part No. 06319.X.0020
with gastight cap
Applications:
Provided as safety device for protection against excessive pressure
in pressure vessels.
Approved for gases, vapours and fluids.
Working temperatures: -200°C / -328°F (73K) up to +280°C / +536°F (553
Essential:
Valves are delivered at a set pressure, therefore when ordering please confirm set pressure, medium and temperature.
Datasheet type 06317