tech level ball valves Low pressure
CONSTRUCTION
— Reformulated Version
Three‑way
ball valves (BVT series) feature a body and sleeve manufactured from hot‑forged
brass UNI EN 12420 – CW617N, while the connections are made from copper tubing
EN 12735‑1 – Cu‑DHP. The spindle, engineered to eliminate any risk of
expulsion, is produced from treated steel, and the corresponding pin is made of
stainless steel. Body and sleeve are assembled through a threaded joint and
subsequently welded. HNBR sealing rings positioned on the operating spindle
ensure complete hermetic isolation from the external environment.
The ball‑seat
gaskets, made from special modified PTFE, provide low operating torque and
guarantee zero seat leakage even under pressure differentials significantly
higher than the design PS.
The cap,
when tightened to the correct torque, ensures complete isolation of the valve
from the external environment. Upon request, BVT valves can also be supplied
with a brass cap.
INSTALLATION
— Reformulated Version
The three‑way
ball valve connects the lower port to one of the two upper ports, depending on
the position of the ball. The valve design allows bi‑directional flow,
and installation can be performed in any orientation required by the system.
For motorized operation, it is recommended to mount the valve so that the
spindle axis remains vertical.
The entire
series is designed for motorization using Belimo® actuators via the
dedicated AMBV connection flange. For detailed information, refer to the
subsection “Motorized ball valve (BV, BVT)”.
APPLICATION
Three‑way
ball valves of the BVT series across all product lines are classified as “Pressure
accessories” under PED Directive 2014/68/EU, Article 2, paragraph 5.
The
intended refrigerants vary depending on the specific line, which also
determines the hazard category in accordance with the PED Directive.
According
to Directive 2014/68/EU, hazard classification depends on:
- type of fluid used,
- intrinsic dimensions (DN),
- maximum design working pressure (PS).
Refer to
the corresponding technical tables for the hazard category of each specific
model, noting that classification may differ between PLUS, BASIC,
and HC lines.
INSTALLATION
The three‑way
ball valve connects the lower port to one of the two upper ports, depending on
the position of the ball. Its design allows bi‑directional flow, and
installation can be carried out in any orientation required by the system. For
motorized operation, a mounting position that keeps the spindle axis vertical
is recommended.
The entire
series is designed for motorization using Belimo® actuators, which are
coupled through the dedicated AMBV connection flange.
APPLICATION
Three‑way
ball valves of the BVT series across all product lines are classified as “Pressure
accessories” under PED Directive 2014/68/EU, Article 2, paragraph 5.
The
intended refrigerants vary depending on the specific line, which also
determines the hazard category in accordance with the PED Directive.
According
to Directive 2014/68/EU, hazard classification depends on:
- type of fluid used,
- intrinsic dimensions (DN),
- maximum design working pressure (PS).
Refer to
the corresponding technical tables for the hazard category of each specific
model, noting that classification may differ between PLUS, BASIC,
and HC lines.
The entire
product line is suitable for use with fluids classified under Article 13,
paragraph 1 of PED Directive 2014/68/EU as Group 2, meaning non‑toxic,
non‑flammable, and non‑explosive. Most of these refrigerants are listed in
Annex E of EN 378‑1 as Class A1.
Compatible refrigerants include:
- HFC: R134a, R404A, R407C, R410A, R507
- HFC/HFO blends: R448A, R449A, R450A, R452A, R513A
According
to Table 7 of Annex II of PED Directive 2014/68/EU:
- some products are classified as Category I and must bear the CE mark, confirming conformity with the Directive;
- others fall under Article 4.3, and therefore must not bear the CE mark, even though they comply with the Directive.
All
products also comply with STATUTORY INSTRUMENTS 2016 No. 1105 – Pressure
Equipment (Safety) Regulations 2016, as amended by the Product Safety
and Metrology etc. (EU Exit) Regulations 2019. Under this
classification:
- certain products are designated Category I and must bear the UKCA mark, demonstrating compliance with the cited regulations;
- others fall within Regulation 8 and must not bear the UKCA mark, even if they meet all regulatory requirements.
The entire
product line is designed for use with hydrocarbon refrigerants (HC) available
on the market — fluids classified under Article 13, paragraph 1 of PED
Directive 2014/68/EU as Group 1. These refrigerants are listed in Annex
E of EN 378‑1 as Class A3.
Compatible refrigerants include:
- HC: R290, R600, R600a, R1270
According
to Table 6 of Annex II of PED Directive 2014/68/EU, all products are
classified as Category I and must bear the CE mark, confirming
conformity with the Directive.
All
products also comply with STATUTORY INSTRUMENTS 2016 No. 1105 – Pressure
Equipment (Safety) Regulations 2016, as amended by the Product Safety
and Metrology etc. (EU Exit) Regulations 2019. Under this classification, all
products are designated Category I and must bear the UKCA mark,
demonstrating that their design meets the requirements of the cited
regulations.
