Alfa Laval Safety Valve

The Alfa Laval Safety Valve is designed to relieve excess pressure from vessels or equipment then close once the system returns to normal. It protects your equipment and the safety of your workers. This valve is also available with a Tri-Clamp connection.

Models

DN25
DN40
DN50
DN65
DN80
DN100

Alfa Laval is a leading global supplier of products and solutions within the key technology areas of heat transfer, separation, and fluid handling.

Safety Valve

Industries

Processed Foods, High-Acid Foods, Dairy, Beverages, Brewery, Home & Personal Care, Pharmaceutical, Biopharmaceuticals, Chemical

View Resources & Literature

Concept

The Alfa Laval Safety Valve is a spring loaded safety valve used to prevent overpressure in tanks and vessels in the dairy, food, beverage, and biopharmaceutical industries to reliability avoid damages to human beings and equipment.

Standard Design

The Alfa Laval Safety Valve comes in sizes from DN25 to DN100 with spring loaded set pressure range from 0.2 to 12 bar. The valve can be pneumatic or manually operated. It is available for both liquid and gases.

Working Principle

It is used to prevent inadmissible overpressures of fluids in tanks, containers, and plant sections. From the factory, the valve is configured with a set pressure upon request that is created than the operating pressure. The valve opens against a spring force if the operating pressure increases the set pressure. Preferably, the Alfa Laval Safety Valve should be installed vertically. If mounted horizontally the set pressure will be a bit lower than specified due to the missing weight of the piston.

Temperature

Temperature Range	41 - 203°F
Max. Sterilization Temperature, Dry Steam	284°F

Materials

Product Wetted Parts	316L
Other Steel Parts	304
Seals	EPDM
External Finish	Ra 1.5-2.5μm
Internal Finish	Ra 0.8μm

Standard Dimensions

Standard

Size	d1 (in)	d2 (in)	d3 (in)	d4 (in)	L1 (in)	L2 (in)	L3 (in)	L4 (in)	Weight (lbs)
DN25	1.02	1.26	Rd52x1/6	Rd58x1/6	3.23	2.83	9.96	1.97	15.00
DN40	1.26	1.50	Rd65x1/6	Rd65x1/6	2.68	3.23	10.04	2.60	20.06
DN50	1.50	1.97	Rd78x1/6	Rd78x1/6	2.76	3.66	11.85	2.60	2.87
DN65	1.97	2.60	Rd95x1/6	Rd95x1/6	3.35	4.13	15.83	2.60	33.06
DN80	2.60	3.19	Rd110x1/4	Rd110x1/4	3.94	4.53	16.04	2.60	48.50
DN100	3.19	3.94	Rd130x1/4	Rd130x1/4	5.12	5.12	16.46	2.60	62.17

Standard with Inductive Sensor for Feedback Dimensions

Size	d1 (in)	d2 (in)	d3 (in)	d4 (in)	L1 (in)	L2 (in)	L3 (in)	L4 (in)	L5 (in)	Weight (lbs)
DN25	1.02	1.26	Rd52x1/6	Rd58x1/6	3.23	2.83	9.96	1.97	714.30	15.00
DN40	1.26	1.50	Rd65x1/6	Rd65x1/6	2.68	3.23	10.04	2.60	745.16	20.06
DN50	1.50	1.97	Rd78x1/6	Rd78x1/6	2.76	3.66	11.85	2.60	846.58	2.87
DN65	1.97	2.60	Rd95x1/6	Rd95x1/6	3.35	4.13	15.83	2.60	1067.04	33.06
DN80	2.60	3.19	Rd110x1/4	Rd110x1/4	3.94	4.53	16.04	2.60	1078.06	48.50
DN100	3.19	3.94	Rd130x1/4	Rd130x1/4	5.12	5.12	16.46	2.60	1104.52	62.17

Manual Lifting Dimensions

Manual Lifting

Size	d1 (in)	d2 (in)	d3 (in)	d4 (in)	L1 (in)	L2 (in)	L3 (in)	L4 (in)	Weight (lbs)
DN25	1.02	1.26	Rd52x1/6	Rd58x1/6	3.23	2.83	9.96	5.55-7.17	16.53
DN40	1.26	1.50	Rd65x1/6	Rd65x1/6	2.68	3.23	10.04	5.98-9.13	22.71
DN50	1.50	1.97	Rd78x1/6	Rd78x1/6	2.76	3.66	11.85	6.06-9.21	34.17
DN65	1.97	2.60	Rd95x1/6	Rd95x1/6	3.35	4.13	15.83	6.02-9.17	35.71
DN80	2.60	3.19	Rd110x1/4	Rd110x1/4	3.94	4.53	16.04	6.00-9.15	51.15
DN100	3.19	3.94	Rd130x1/4	Rd130x1/4	5.12	5.12	16.46	5.98-9.13	65.26

Pneumatic Lifting with Inductive Sensor for Feedback

Size	d1 (in)	d2 (in)	d3 (in)	d4 (in)	L1 (in)	L2 (in)	L3 (in)	L4 (in)	L5 (in)	Weight (lbs)
DN25	1.02	1.26	Rd52x1/6	Rd58x1/6	3.23	2.83	9.96	1.97	12.76	15.00
DN40	1.26	1.50	Rd65x1/6	Rd65x1/6	2.68	3.23	10.04	2.60	13.31	20.06
DN50	1.50	1.97	Rd78x1/6	Rd78x1/6	2.76	3.66	11.85	2.60	15.12	2.87
DN65	1.97	2.60	Rd95x1/6	Rd95x1/6	3.35	4.13	15.83	2.60	19.06	33.07
DN80	2.60	3.19	Rd110x1/4	Rd110x1/4	3.94	4.53	16.04	2.60	19.25	48.50
DN100	3.19	3.94	Rd130x1/4	Rd130x1/4	5.12	5.12	16.46	2.60	19.72	62.17