Hot & Cold Srl
About us
Hot & Cold Srl is a constantly growing company that for over 30 years has been providing solutions, products, and services. Founded to manage steam and heat transfer fluids in industrial processes and heat exchange systems, today it is a solid and trusted partner in the naval sector.
We offer a wide range and ready stock availability of:
Carbon steel pipes and fittings according to ISO standards and schedules
Stainless steel pipes and fittings according to ISO standards and schedules
Flat, collar, blind, square flanges, etc.
Butterfly valves in stainless steel and bronze (also Lloyd’s, RINA, and ABS certified)
Bronze globe valves, threaded and flanged
Stainless steel ball valves, threaded and flanged
Stainless steel and bronze filters, threaded and flanged
Stainless steel and bronze gate valves, threaded and flanged
Electric and pneumatic actuators
Metallic expansion joints
Rubber anti-vibration joints, flanged and union type
Straub-type couplings
Stainless steel 316 pressfitting systems
Reliable solutions, technical expertise, and constant support: our daily contribution to the industrial and naval world.
Products
AISI 316 stainless steel schedule weld reducers
Concentric reducers to be welded schedule, obtained without welding for pressure applications in Aisi 316 stainless steel.
AISI 304 and 316 stainless steel schedule pipes
SS pipes without welding in Aisi 304 and Aisi 316 schedule stainless steel
Stainless steel three‑piece M/F union
Three-piece M/F stainless steel joint. Stainless steel union with conical or flat seal. Three-piece M/F stainless steel joint in AISI 316.
AISI 316 stainless steel pipe nipples
AISI 316 stainless steel pipes, gas threaded fittings, and stainless steel weld-on fittings. AISI 316 stainless steel pipes for welding.
AISI 316 stainless steel schedule elbows
Aisi 316 stainless steel curves schedule 10. Aisi 316 and Aisi 304 stainless steel curves schedule
Stainless steel AISI flanges
Flat flanges in stainless steel Aisi 316. Flat flanges in stainless steel Aisi 316 Uni 2278 – Uni 2277 – Uni 2276 – Uni 6083 – Uni 6084
Square stainless steel flanges
This type of flange has a square shape, different from normal flanges and allows its use even in systems with particular characteristics that require the use of square flanges.
Stainless steel Camlock fittings.
Stainless steel Camlock fittings (stainless steel quick-release lever fittings) are used for their ease of disassembly and are available in various shapes from 1/2" to 8" diameters with Gas or NPT threaded connections. The most common are lever-type, with male and female threads and are identified by an acronym that identifies them: Type A – AW – B – C – D – E – F – DC – DW – DP – LAS – LBS. Camlock fittings can also be made of other materials including: Bronze, Stainless Steel, Aluminum, Polypropylene and Carbon Steel. Gaskets can be inserted with various compounds: NBR – EPDM and FKM. The operating pressure of these lever-type fittings varies with the diameter and material of the fitting, while the temperature resistance depends on the gasket material. Camlock fittings have been specifically designed for the industrial sector, mainly used in the chemical plant sector, they are used to obtain a quick and safe connection between two types of pipes.
Stainless steel rubber anti‑vibration joints
Anti-vibration joints in stainless steel, EPDM, or NBR rubber. Anti-vibration joints in stainless steel, EPDM, or NBR, with threaded stainless steel connections in Aisi 304.
Fire‑resistant rubber joints, double yellow wave
Fire-resistant NBR rubber joints with double yellow wave according to ISO 15540. The rubber joints with double yellow wave are certified fire-resistant according to ISO 15540 for a temperature range (depending on the fluid) from – 20° C to + 90° C, temporarily up to + 100° C. Fire-resistant (according to ISO 15540) for up to 30 minutes at 800° C.
Rubber joints with stainless steel flanges
Rubber joints with stainless steel flanges. We manufacture EPDM or NBR rubber joints with PN 6, PN 16, PN 25, and PN 40 stainless steel flanges. The stainless steel rubber joints, mounted on pipes, are primarily designed to dampen vibrations and reduce noise.
Stainless steel flanged expansion joints
Stainless steel expansion joints. Stainless steel expansion joints with or without internal guide ducts. Stainless steel expansion joints can be supplied in any length and with PN 6, PN 16, PN 25, PN 40 flanged connections, with fixed flanges or with rotating flanges.
Stainless steel threaded swing check valve
Threaded swing check valve in stainless steel. Threaded swing check valve in AISI 316 stainless steel with female/female GAS threaded connections. Suitable only for horizontal installation with a maximum temperature of 180°C and an operating pressure of 63 bar.
Stainless steel swing check valve
Stainless steel swing check valve. The stainless steel swing check valve is made of AISI 316 stainless steel with an FKM (Viton) seal. The stainless steel swing check valve is used to allow fluid to flow in only one direction. Swing check valves, also known as non-return valves, are of the narrow-gauge wafer type, suitable for installation between EN 1091-1 PN 10/16 flanges. Stainless steel swing check valves are suitable for temperatures between -20°C and +135°C and a maximum pressure of 16 bar.
Wafer disc check valves
Stainless steel wafer disc check valve in Aisi 316, for mounting between flanges. The stainless steel wafer disc check valve, thanks to its construction, is suitable for installation in any position, is easy to install, has a small footprint, has self-centering mounting holes, is maintenance-free and can have a metal or PTFE seat disc seal. The stainless steel wafer disc check valve has a low pressure drop and is suitable for use with many types of fluids including: steam, superheated water, hot water and diathermic oil with an operating temperature between -20°C and + 240°C. Stainless steel wafer disc check valves have a body, spring, and disc closing shutter made of Aisi 316 stainless steel, suitable for operation up to a maximum operating pressure of 20 Bar. Furthermore, thanks to their fixing holes, they are suitable for insertion between the various types of flanges PN 6, 10, 16, 25, 40, ANSI 150, ANSI 300. Wafer disc check valves are mainly used in fire-fighting systems, air conditioning, water systems, the naval industry, the oil industry, chemical plants, industrial plants, and in ventilation processes.
Stainless steel flanged filters
Flanged Y-strainers with AISI 316 stainless steel body and lid and removable basket. Y-strainers are designed to prevent impurities in liquids from circulating within a system, thus protecting pumps, sensors, and measuring instruments from damage.
Stainless steel ball valve with butterfly handle
Stainless steel ball valve with butterfly handle. Stainless steel ball valves with butterfly handles have the advantage of a compact handle, making them particularly suitable for installations with limited space.
Stainless steel three‑way valve
Three-way stainless steel ball valve. Stainless steel three-way valves are made of AISI 316 stainless steel and can be used as a diverter L or a mixer T. The stainless steel three-way ball valve is full-bore with threaded connections. Stainless steel three-way valves are suitable for operating at a maximum pressure of 63 bar and a temperature of 180°C. Stainless steel ensures long valve life, even with aggressive fluids.
Stainless steel ball valves with ISO mounting pad for actuator
The Aisi 316 ball valves are of the full bore type, the stainless steel base is used to connect the valve body with the actuator which can be of the pneumatic or electric type.
Stainless steel flanged three‑way valve
Stainless steel flanged three-way valve. The stainless steel flanged three-way valve is used to mix or divert a fluid. The T- or L-shaped ball configuration determines the inlet and outlet positions of the liquid. Three-way valves are typically used with water as the fluid and are employed in both civil and industrial settings.
Threaded bronze safety valve
Bronze threaded safety valve
Bronze flanged angle safety valve.
Angled bronze flanged safety valve. Angled bronze flanged safety valve with variable setting.
Flanged bronze swing check valve
Flanged bronze swing check valve. The flanged bronze swing check valve, thanks to the full opening of the valve plate, ensures complete fluid flow.
Threaded bronze Y‑strainers
Bronze Y-strainers with AISI 304 stainless steel basket and drain plug. Bronze Y-strainer for collecting dirt with female/female threaded process connections. The filters are PN 16 and used for low-pressure water or steam. The filters are installed to prevent pipe impurities from compromising and damaging downstream equipment such as control valves and other components.
Bronze filters flanges
Bronze filters. Flanged bronze filters with removable stainless steel basket. Filters are available with PN 6, PN 10, or PN 16 flange holes.
Flanged bronze sight flow indicators
Flanged bronze flow indicators. Flow indicators, flanged connections, constructed of bronze with double tempered glass. These indicators are used to monitor the correct passage and flow of fluids. Flanged bronze flow indicators for horizontal and vertical installation, suitable for steam or high temperatures.
Bronze anti‑vibration joints
Bronze anti-vibration joints. Bronze anti-vibration joints in NBR with threaded connections.
Threaded bronze ball valve
Bronze ball valve. Full-bore bronze lever ball valve, PN16 female/female thread.
Bronze counterweight valve
Bronze counterweight tap. Bronze counterweight tap for probe with cast iron counterweight. Probe tap, bronze body, female BSP threaded inlet, 1.5" male BSP threaded outlet, complete with cap and chain, with integral test tap.
Threaded bronze gate valve
Bronze gate valve. Bronze gate valve with handwheel, female/female threaded connections, pressure PN 16
Flanged bronze gate valve
Bronze gate valve. Bronze gate valve with handwheel, female/female threaded connections, pressure PN 16
Bronze angle globe valve
Bronze angle globe valve with flanged connections. Globe valves can be supplied with PN 6, PN 10, or PN 16 drillings.
Flanged bronze globe valve.
Bronze globe valve. Flanged bronze globe valves available with metal or PTFE seals. Globe valves can be drilled to PN 6, PN 10, or PN 16. They can be supplied with an opening indicator upon request.
Wafer butterfly valves with a stainless‑steel disc
Stainless steel disc butterfly valves. Wafer butterfly valves with stainless steel discs, with through-hole flange connections. Wafer butterfly valve with PN 16 ductile iron body and AISI 316 stainless steel wetted parts. Manual butterfly valve suitable for shutting off and regulating water.
Butterfly valves with an aluminum‑bronze disc
Butterfly valves with aluminum-bronze lenses. Butterfly valves for the naval sector with cast iron bodies and aluminum-bronze lenses, PN 16 and PN 6 drilling.
Lug type butterfly valves with stainless steel disc.
Lug-type butterfly valve with stainless steel disc. Lug-type butterfly valve with stainless steel disc and threaded holes. Body in ductile iron PN16 and disc in AISI 316 stainless steel. Butterfly valves can be configured with different types of sealing liners depending on the operating temperature and the type of fluid. The sealing liners are available in NBR, EPDM, PTFE (Teflon) or Viton. They are mainly used for shut‑off and regulation of water and gas. Butterfly valves can be operated manually with a lever, or equipped with pneumatic or electric actuators. They consist of a disc-shaped obturator used to open and close the fluid passage, and are typically used when high regulation precision is not required and low pressure drop is desired
Manual wafer-type stainless steel ball valves
Manual wafer-type stainless steel flanged ball valve. Ball valve with wafer-type stainless steel flanged connections for installation between flanges. The ball valves are manufactured in stainless steel AISI 304 or AISI 316, with a flat-body flanged design, compact dimensions, and full bore passage. They can be used in the manual version operated by lever, or in the actuator version by mounting and fixing it onto the ISO pad provided. The ball seat sealing is made of PTFE reinforced with graphite, a material suitable for high-temperature applications. Stainless steel flanged ball valves are preferred in many plants compared to other types of valves, because thanks to their coupling flanges they can be installed and replaced safely and quickly.