Isolation

Isolation valves are used for positive shut-off or safe isolation of piping sections in steam, condensate, hot/chilled water, air, thermal oil, industrial liquid, and non-corrosive or chemically compatible fluid services. Selection is based on DN, PN or ANSI Class, operating temperature, differential pressure, flow direction, allowable seat leakage, and compatibility of body, seat, and sealing materials.

For globe-type stop valves, bellows-sealed designs are specified where external stem leakage must be minimized, such as in steam, thermal oil, ammonia, vacuum, or process lines. Packed gland versions are used in general industrial service where periodic packing inspection and maintainability are acceptable. For smaller sizes and higher pressure service, forged steel globe and gate valves are used in Class 150/300 and Class 800 ratings.

Ball valves are applied where rapid isolation is required in 2-way, 3-way, or 4-way configurations, with PN16/40, PN63/100, Class 600, wafer, threaded, or jacketed constructions for temperature-controlled media. Butterfly valves are selected where low weight, short face-to-face dimension, and suitability for larger diameters are important.

Gate valves are intended primarily for on/off duty and are not generally selected for prolonged throttling service. Diaphragm valves are used where the operating mechanism must be isolated from the process fluid. Needle valves are applied for fine regulation of low flow rates or instrumentation service. Knife gate valves are used for slurries, pulp, and fluids containing solids, with shut-off direction checked in unidirectional designs.

Globe valve bellow sealed - FABA Plus | ARI

Globe valve bellow sealed - FABA Plus | ARI
ARI-FABA®-Plus — Bellows Seal Valve for Steam and Process Networks The ARI-FABA®-Plus is a manually operated isolation valve featuring a dual metallic bellows seal and secondary graphite packing. It is utilized where shaft leakage must be minimized in steam, hot water, thermal oil, gas, and industrial fluid networks. Construction Variants...

Globe valve - FABA SUPRA I | ARI

Globe valve - FABA SUPRA I | ARI
ARI-FABA®-Supra I — Industrial Bellows Seal Valve The ARI-FABA®-Supra I is a globe-type isolation valve with a metallic bellows, designed for systems requiring stem leakage prevention in steam, condensates, hot water, thermal circuits, and auxiliary process lines. The I version is the industrial version: the bellows is shielded and positioned outside the...

Globe valve - STOBU | ARI

Globe valve - STOBU | ARI
ARI-STOBU Globe Valve with Stuffing Box The ARI-STOBU is a globe valve designed for isolation and, where the plug configuration allows, limited flow regulation. It is used in steam, condensate, hot water, gas, and industrial fluid lines, with material selection based on pressure, temperature, and chemical compatibility. Technical Specifications Available...

Gate valve soft seal - EURO WEDI | ARI

Gate valve soft seal - EURO WEDI | ARI
ARI EURO-WEDI – Soft-Sealing Shut-Off Valve The ARI EURO-WEDI is a manually operated shut-off/throttling valve with an EPDM soft seal, designed for heating and cooling water networks, as well as neutral industrial fluids compatible with EPDM. It is not intended for steam or media containing mineral oils. Technical Specifications Nominal Pressure: PN6 or...

Globe valve - FABA Plus ANSI | ARI

Globe valve - FABA Plus ANSI | ARI
ARI-FABA®-Plus ANSI — Bellows Sealed Isolation Valve The ARI-FABA®-Plus ANSI is a globe stop valve featuring a dual metallic bellows and secondary graphite packing to minimize stem leakage. It is applicable in steam lines, gases, hot water, thermal oil, process water, vacuum, and ammonia systems. Connection Types and Classes Fig. 041: Flanged,...

Globe valve - FABA SUPRA C | ARI

Globe valve - FABA SUPRA C | ARI
ARI-FABA®-Supra C — Bellows Seal Valve for Chemical and Industrial Processes The ARI-FABA®-Supra C is a manually operated globe stop valve with a metallic bellows, designed for isolation and limited flow regulation in steam lines, hot water, thermal oil, gases, and process liquids. The C version corresponds to the Chemical version: the bellows is...

Globe Valve - FABA SUPRA I ANSI | ARI

Globe Valve - FABA SUPRA I ANSI | ARI
ARI-FABA®-Supra I ANSI — Bellows Seal Industrial Version The ARI-FABA®-Supra I ANSI is a globe stop valve with a metallic bellows designed for isolation or controlled throttling in steam lines, condensates, hot water, thermal oil, gases, and process liquids. The Supra I version features the bellows outside the main flow path, making it suitable for...

Globe valve - FABA SUPRA C ANSI | ARI

Globe valve - FABA SUPRA C ANSI | ARI
ARI-FABA®-Supra C ANSI — Bellows Seal Chemical Version The ARI-FABA®-Supra C ANSI is a globe stop valve with a bellows seal designed for isolating steam lines, hot water, thermal oil, gases, and process liquids. The Supra C version is the chemical version of the series, featuring a V-port plug and marginal seat as standard configuration. Connection...

Forged globe valve Class 800 - G800 | ICP Valves

Forged globe valve Class 800 - G800 | ICP Valves
Forged Globe Valve ICP G800 Class 800 The ICP G800 is a forged globe valve, Class 800, designed for small DN in steam, condensate, water, air, oil, and compatible industrial fluid lines. The product page lists it as a bi-directional valve, but for applications requiring critical sealing under differential pressure, installation direction should be...

Forged globe valve Class 150/300 - G150/300 | ICP Valves

Forged globe valve Class 150/300 - G150/300 | ICP Valves
Forged Globe Valve ICP G150/300 Class 150/300 The ICP G150RF / G300RF is a forged globe valve with RF flanged connection, designed for flow isolation in small DN and ANSI applications. It is unidirectional and suitable for steam, condensate, water, air, oils, and industrial fluids, provided compatibility with A105 or A182 F316L is ensured. Construction...

Forged Gate Valve Class 800 - C800 | ICP

Forged Gate Valve Class 800 - C800 | ICP
ICP Gate Valve Fig. C800 Class 800 The ICP C800 is a forged steel gate valve for small diameters, designed for flow isolation in high-pressure industrial networks. It is a bidirectional on/off valve, not intended for throttling, as partial opening can wear seats and wedge. Available in sizes 1/2"–2" / DN15–DN50, Class 800. Standards and Connections Design...

Forged Gate Valve Class 150/300 - C150/300 | ICP

Forged Gate Valve Class 150/300 - C150/300 | ICP
ICP C150RF / C300RF Gate Valve Class 150–300 The ICP C150/300 is a forged steel gate valve for small diameters, featuring RF flanges, designed for flow isolation in steam, condensate, thermal oil, compressed air, industrial water, and process fluid networks. It operates in an on/off capacity and is not intended for throttling. Technical Configuration...

Needle valve ISO 228 F - 658001/Y | 4G Ghidini

Needle valve ISO 228 F - 658001/Y | 4G Ghidini
4G Needle Valve Ghidini 658001/Y – ISO 228 F Manual needle valve designed for small process lines requiring gradual flow adjustment or local isolation. Connection is female/female thread ISO 228, with body and needle made from AISI 316L / 1.4404, polished exterior surface, and handwheel made from Duroplast. Available in sizes 1/4” to 1 1/2”. Operating...

Needle valve NPT F - 658004 | 4G Ghidini

Needle valve NPT F - 658004 | 4G Ghidini
Needle Valve 4G Ghidini 658004 – NPT F Manual needle valve for local regulation of small flows and isolation of auxiliary lines. Model 658004 features female/female NPT threading, AISI 316L / 1.4404 body, polished exterior, and handwheel. Available from 1/4” to 1 1/2”. Operating Conditions Operating Temperature: -20°C to +160°C PN 160: 1/4”, 3/8”,...

Needle valve Clamp - 658030 | 4G Ghidini

Needle valve Clamp - 658030 | 4G Ghidini
Needle Valve 4G Ghidini 658030 – Clamp DIN Manual needle valve for gradual regulation of low flow rates in clean liquid or gas lines. Model 658030 features a Clamp connection according to DIN 32676, Tab. 4 Reihe C and Tab. 2 Reihe A, with body and needle made from AISI 316L / 1.4404 and an external polished surface. Available sizes: 1/2”, 3/4”, DIN Ø34,...

Needle valve UNI EN 1092-1 - 658050 | 4G Ghidini

Needle valve UNI EN 1092-1 - 658050 | 4G Ghidini
Needle Valve 4G Ghidini 658050 – UNI EN 1092-1 Manual flanged needle valve for gradual flow regulation in clean liquid or gas lines. Model 658050 features rotating flanges according to UNI EN 1092-1:2003, AISI 316L / 1.4404 body, and polished exterior. Available from DN10 to DN25. Technical Specifications Operation: handwheel, no pneumatic or electric...

Needle valve EN 1759-1 CLASS 150 - 658055 | 4G Ghidini

Needle valve EN 1759-1 CLASS 150 - 658055 | 4G Ghidini
4G Needle Valve Ghidini 658055 – EN 1759-1 Class 150 Manual needle valve with detachable flanged ends EN 1759-1 Class 150, designed for fine flow adjustment in clean liquid or gas lines. The body is AISI 316L / 1.4404, featuring a polished exterior and handwheel. Available in 1/2”, 3/4”, and 1” sizes, corresponding to DN15, DN20, and DN25. Technical...

Needle valve ISO 228 F - GRADUATE HANDWHEEL - 658201 | 4G Ghidini

Needle valve ISO 228 F - GRADUATE HANDWHEEL - 658201 | 4G Ghidini
Needle Valve 4G Ghidini 658201 – ISO 228 F with Calibrated Handwheel Manual needle valve designed for low flow regulation in clean liquid or gas lines. Model 658201 features female/female ISO 228 threading, AISI 316L / 1.4404 body, polished exterior, and a calibrated handwheel for repeatable open positions. Available from 1/4” to 1 1/2”. Operating...

Needle valve Clamp - GRADUATE HANDWHEEL - 658230 | 4G Ghidini

Needle valve Clamp - GRADUATE HANDWHEEL - 658230 | 4G Ghidini
Needle Valve 4G Ghidini 658230 – Clamp with Calibrated Handwheel Manual needle valve for gradual adjustment of small flow rates in clean liquids or gases. The 658230 version features Clamp connections according to DIN 32676 Tab. 4 Reihe C and Tab. 2 Reihe A, AISI 316L body, polished exterior surface, and calibrated handwheel. Available in 1/2”, 3/4”, DIN...

Needle valve UNI EN 1092-1 - GRADUATE HANDWHEEL - 658250 | 4G Ghidini

Needle valve UNI EN 1092-1 - GRADUATE HANDWHEEL - 658250 | 4G Ghidini
Needle Valve 4G Ghidini 658250 – UNI EN 1092-1 with Calibrated Handwheel Manual flanged needle valve for gradual regulation of low flow rates in clean liquid or gas lines. The 658250 version features rotating flanges UNI EN 1092-1:2003, AISI 316L / 1.4404 body, polished exterior surface, and a graduated handwheel for position reset. Available sizes are...

Needle valve RATE ISO 228 F - 678001 | 4G Ghidini

Needle valve RATE ISO 228 F - 678001 | 4G Ghidini
Needle Valve / Rate Valve 4G Ghidini 678001 – ISO 228 F The 678001 is a manually operated rate valve with ISO 228 female/female threads, designed for local flow regulation in clean liquid or gas lines. The body is made of AISI 316L / 1.4404, featuring a polished exterior and handwheel. Available in sizes 1/2”, 3/4”, 1”, 1 1/4”, and 1 1/2”. Technical...

Needle valve RATE ISO 228 F - GRADUATE HANDWHEEL - 678201 | 4G Ghidini

Needle valve RATE ISO 228 F - GRADUATE HANDWHEEL - 678201 | 4G Ghidini
Needle Valve / Rate Valve 4G Ghidini 678201 – ISO 228 F with Calibrated Handwheel The 678201 is a manually operated rate valve featuring ISO 228 F/F female threads and a calibrated handwheel, designed for repeatable low-flow adjustments in clean liquid or gas lines. The body is constructed from AISI 316L / 1.4404 with a polished exterior. Available sizes...

Needle valve NPT F - GRADUATE HANDWHEEL - 658204 | 4G Ghidini

Needle valve NPT F - GRADUATE HANDWHEEL - 658204 | 4G Ghidini
Needle Valve 4G Ghidini 658204 – NPT F with Calibrated Handwheel Manual needle valve for fine flow adjustment in clean liquid or gas lines. Model 658204 features female/female NPT threading, a calibrated handwheel, AISI 316L / 1.4404 body, and polished exterior. Available in sizes from 1/4” to 1 1/2”. Operating Conditions Operating Temperature: -20°C to...

Gate valve soft seated - 20.900-21.900 | Brandoni

Gate valve soft seated - 20.900-21.900 | Brandoni
Brandoni Gate Valve 20.900 / 21.900 Soft Seated The Brandoni 20.900 and 21.900 are flanged gate valves with elastomer-coated wedge, designed for flow isolation in water networks, HVAC systems, water treatment, sewage, industrial auxiliary lines, and irrigation networks. Not suitable for steam, throttling, or flow regulation, nor for fluids containing oils...
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