The Burkert 387583 (Type 2060) pneumatically operated 2/2-way angle seat valve fulfils the demands of tough process environments. This specific model features a DN15 nominal size, G 1/2 internal thread, and a PTFE seat seal. It is configured for Control Function A (normally closed) with flow below the seat, handling operating pressures from 0 to 11 bar and medium temperatures up to 180 °C. Unrivalled life time and sealing integrity is guaranteed by the trusted self-adjusting packing gland.

The stainless steel actuator has been designed for tough applications. Laser welding ensures it is both cleanable and robust. With a ducted exhaust air port, the actuator can be operated isolated from the environment to guarantee an optimum life time and hygiene. High flow rates are attained with the optimised stainless steel angle seat body. All wetted parts comply with the EC Directive 1935/2004.

General Technical Data

Feature	Specification
Design	Angle seat valve
Nominal diameter	DN 15 (Model 387583)
Safety setting	Normally closed (control function A)
Flow direction	Flow to open (below seat)
Operating pressure	0 bar(g)...11 bar(g) (Model 387583)
Pilot pressure	5.5...10 bar(g)
Seat leakage	Leakage rate A (DIN EN 12266-1), seat seal PTFE, test medium air
$K_v$ value (water)	4.7 m³/h (Model 387583)
Medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents
Medium temperature	0...+ 180 °C (Model 387583)
Viscosity	Max. 600 mm²/s
Control medium	Air, neutral gases
Port Connection	G 1/2 Internal thread
Degree of protection	IP65/67
Installation position	As required, preferably with actuator upright

Control Functions

WARNING

Risk of damage due to bursting pipes and bursting equipment when the flow is above the seat. In the case of liquid mediums, water hammer can occur causing pipes and the device to burst. Do not use valves with flow above the seat for liquid mediums.

Symbol	Description
	Control function A (CF A) Pneumatically operated 2/2-way on/off valve Flow direction below seat Normally closed by spring force
	Control function B (CF B) Pneumatically operated 2/2-way on/off valve Flow direction below seat Normally opened by spring force

Materials

No.	Element	Material
1	Transparent cover	Optical position indicator Polysulfone PSU
2	Pilot air ports	Threaded bushing G 1/8" Stainless steel 1.4404 (316L)
3	Spring support	Stainless steel 1.4308
4	Spindle extension	Stainless steel 1.4104
5	Actuator casing	Stainless steel 1.4404 (316L)
6	Piston seal	FKM
7	Actuator base (interface)	Stainless steel 1.4308
8	Spring	Stainless steel 1.4310
9	Pipe	Stainless steel 1.4401 (316)/1.4404 (316L)
10	Packing gland	PTFE V-Rings (filled), with spring compensation
11	Spindle	Stainless steel 1.4401 (316)/1.4404 (316L)
12	Spindle guide	PTFE (filled) for actuator size 50(D) / PEEK for actuator size 70(M), 90(N), 130(P)
13	Swivel plate	Stainless steel 1.4401 (316)/1.4404 (316L)
14	Seat seal	PTFE (Model 387583)
15	Valve body	Stainless steel CF3M

Dimensions

Body with threaded connection

Dimensions in mm, unless otherwise stated

DN	NPS	G	E	CM	LM	SW
10	3/8	12	10.3	18.5	65	-
15	1/2	14	13.7	24	65	27
20	3/4	16	14.0	27	75	34
25	1	18	16.8	29.5	90	41
32	1 1/4	16	17.3	36	110	50
40	1 1/2	18	17.3	35	120	55
50	2	24	17.6	45	150	70
65	2 1/2	26	23.7	57	185	85
80	3	28	-	71	220	100

Operating Limits

In addition to the maximum operating pressures, the operating range of Bürkert process valves is limited by the nominal pressure according to the relevant standard. The 387583 model is designed for a maximum operating pressure of 11 bar and a medium temperature up to 180 °C.