ALFACOM ENGINEERING LTD.
Safety and Pressure Relief Valves
ALFACOM offers safety and pressure relief valves for industrial overpressure protection. The range includes threaded and flanged designs, full-lift and proportional designs, and models for steam, gases, air and liquids, subject to the specific model's suitability.
Safety and Pressure Relief Valves · Illustrative image
Explore Safety Valves and Related Equipment
Browse 26 catalogue entries by connection type and function. English model guidance and ALFACOM-hosted technical documents are provided below. EN, ASME, NPT and unit-system labels follow the individual entries; confirm the exact supplied configuration and required certification.
Flanged Safety Valves
Model 486 ASME (SI) · Full Lift Flanged Safety Valve
Model 486 ASME (USCS) · Full Lift Flanged Safety Valve
Model 596 EN · Full Lift Flanged Safety Valve
Model 696 EN · Full Lift Flanged Safety Valve
Model 494 EN · Normal Lift Flanged Safety Valve
Model 296 EN · Normal Lift Flanged Safety Valve
Threaded Safety Valves
Model 495 EN · Full Lift Threaded Safety Valve
Model 485 NPT (SI) · Full Lift Threaded Safety Valve
Model 485 NPT (USCS) · Full Lift Threaded Safety Valve
Model 695 EN · Full Lift Threaded Safety Valve
Model 685 NPT (SI) · Full Lift Threaded Safety Valve
Model 685 NPT (USCS) · Full Lift Threaded Safety Valve
Model 995 EN · Full Lift Threaded Safety Valve
Model 985 ASME NPT (SI) · Full Lift Threaded Safety Valve
Model 985 ASME NPT (USCS) · Full Lift Threaded Safety Valve
Model 295 EN · Normal Lift Threaded Safety Valve
Model 095 EN · Proportional Safety Valve
Cryogenic Safety Valves
Model 895 EN · Cryogenic Safety Valve
Model 885 ASME NPT (SI) · Cryogenic Safety Valve
Clamp Connection Safety Valves
Model 694 CLAMP · Full Lift Safety Valve
Vacuum Breaker Safety Valves
Model 795 EN · Vacuum Breaker Safety Valve
Model 785 ASME NPT (SI) · Vacuum Breaker Safety Valve
Model 785 ASME NPT (USCS) · Vacuum Breaker Safety Valve
Silencers and Test Equipment
Model 005 EN · Multi-stage Diffusion Silencer
Model 000 · Safety Valve Test Bench
VYC Model 496 EN · Full Lift Flanged Safety Valve
Spring-loaded full-lift safety valve with flanged connections. Select the exact inlet/outlet sizes, body and trim configuration, flange specification and documented relieving duty.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 486 ASME (SI) · Full Lift Flanged Safety Valve
Spring-loaded full-lift safety valve with flanged connections. Select the exact inlet/outlet sizes, body and trim configuration, flange specification and documented relieving duty.
The linked entry is the SI-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 486 ASME (USCS) · Full Lift Flanged Safety Valve
Spring-loaded full-lift safety valve with flanged connections. Select the exact inlet/outlet sizes, body and trim configuration, flange specification and documented relieving duty.
The linked entry is the US customary-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 596 EN · Full Lift Flanged Safety Valve
Spring-loaded full-lift safety valve with flanged connections. Select the exact inlet/outlet sizes, body and trim configuration, flange specification and documented relieving duty.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 696 EN · Full Lift Flanged Safety Valve
Spring-loaded full-lift safety valve with flanged connections. Select the exact inlet/outlet sizes, body and trim configuration, flange specification and documented relieving duty.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 494 EN · Normal Lift Flanged Safety Valve
Spring-loaded normal-lift safety valve with flanged connections. The catalogue describes initial opening proportional to the pressure rise followed by full opening. Select the exact size, materials and model configuration.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 296 EN · Normal Lift Flanged Safety Valve
Spring-loaded normal-lift safety valve with flanged connections. The catalogue describes initial opening proportional to the pressure rise followed by full opening. Select the exact size, materials and model configuration.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 495 EN · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 485 NPT (SI) · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
The linked entry is the SI-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 485 NPT (USCS) · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
The linked entry is the US customary-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 695 EN · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 685 NPT (SI) · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
The linked entry is the SI-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 685 NPT (USCS) · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
The linked entry is the US customary-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 995 EN · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 985 ASME NPT (SI) · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
The linked entry is the SI-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 985 ASME NPT (USCS) · Full Lift Threaded Safety Valve
Spring-loaded full-lift safety valve with threaded connections. Specify both connection sizes, the required thread form, material and sealing arrangement, and the intended pressure-relief duty.
The linked entry is the US customary-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 295 EN · Normal Lift Threaded Safety Valve
Spring-loaded normal-lift valve with threaded connections. The shared 295 / 296 catalogue distinguishes the threaded 295 from the flanged 296; use the table for the selected model.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 095 EN · Proportional Safety Valve
Spring-loaded proportional safety valve. The shared 095 / 096 catalogue distinguishes the threaded 095 from the flanged 096. Identify the required connection and the model-specific capacity data.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 895 EN · Cryogenic Safety Valve
Full-lift safety-valve catalogue entry for cryogenic service. Confirm the exact model's low-temperature materials, sealing arrangement, cleanliness requirements and permitted duty for the specified fluid.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 885 ASME NPT (SI) · Cryogenic Safety Valve
Full-lift safety-valve catalogue entry for cryogenic service. Confirm the exact model's low-temperature materials, sealing arrangement, cleanliness requirements and permitted duty for the specified fluid.
The linked entry is the SI-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 694 CLAMP · Full Lift Safety Valve
Full-lift safety valve with clamp-end connections. Specify the ferrule dimensions, mating clamp and seal arrangement, materials and required process duty for the complete connection.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 795 EN · Vacuum Breaker Safety Valve
Spring-operated vacuum-breaker valve intended to limit vacuum formation in vessels or installations. Specify the opening vacuum differential and required intake duty; distinguish these requirements from positive-pressure relief.
Use the exact configuration and units in the linked model document. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 785 ASME NPT (SI) · Vacuum Breaker Safety Valve
Spring-operated vacuum-breaker valve intended to limit vacuum formation in vessels or installations. Specify the opening vacuum differential and required intake duty; distinguish these requirements from positive-pressure relief.
The linked entry is the SI-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 785 ASME NPT (USCS) · Vacuum Breaker Safety Valve
Spring-operated vacuum-breaker valve intended to limit vacuum formation in vessels or installations. Specify the opening vacuum differential and required intake duty; distinguish these requirements from positive-pressure relief.
The linked entry is the US customary-unit document. Use its stated units throughout selection and comparison. Confirm the set point, relieving or intake capacity, medium, operating temperature, pressure conditions and required documentation for the selected model.
VYC Model 005 EN · Multi-stage Diffusion Silencer
Multi-stage diffusion silencer for discharge of compressible fluids such as steam, air and gases. Select for the discharge conditions, allowable back pressure, connection arrangement and required acoustic performance.
Use the exact configuration and units in the linked model document.
VYC Model 000 · Safety Valve Test Bench
Test-bench equipment for inspection, setting and resetting of safety valves. Define valve connection sizes, test medium, pressure range and the required measurement and documentation arrangements.
Use the exact configuration and units in the linked model document.
APPLICATION BEFORE SPECIFICATION
Selection Starts with Your Application
Specify the fluid, set pressure, temperature, required relieving capacity, outlet pressure, connections and applicable standard. Suitability and required documentation must be checked for the selected model.
Catalogue & Technical Documents
Review the model-specific technical information and installation requirements. Send a specification, drawing or existing model reference if you need help selecting equipment.
Model-specific document: the PDF below covers the VYC 496 EN series. Documents for other models are available through their catalogue entries above.
Discuss Your Application
Send your requirements or a photo of the existing equipment for technical assistance and a quotation.
Availability and lead time are confirmed for the requested model and quantity.