Burkert 337816 (Type 2060) pneumatically operated 2/2-way angle seat valve fulfills the demands of tough process environments. 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.

Features

• Flow optimised stainless steel body with various line connections
• Trusted components for the longest life time
• Stainless steel actuator suitable for demanding environments
• High seal tightness due to self-adjusting packing gland
• Actuator can be seamlessly rotated by 360°

General Technical Data

Product properties	Details
Design	Angle seat valve
Nominal diameter	DN 10...DN 80, NPS 3/8...NPS 3
Safety setting	Normally closed (control function A), normally open (control function B)
Flow direction	Flow to open (below seat), flow to close (above seat)
Operating pressure	0 bar(g)...25 bar(g), vacuum variants...-0.9 bar(g)
Nominal pressure	PN 25 (DIN EN 1333), Class 150 (DIN EN 1759)
Pilot pressure	2...10.5 bar(g)
Medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents
Medium temperature	-40...+230 °C
Ambient temperature	-10...+130 °C

Control Functions

Risk of damage due to bursting pipes

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.

• 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	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) / PEEK
13	Swivel plate	Stainless steel 1.4401 (316)/1.4404 (316L)
14	Seat seal	PTFE, PEEK (optional), NBR (optional), FKM (optional)
15	Valve body	Stainless steel CF3M

Dimensions

Actuator

Body with Threaded Connection

DN	NPS	G	NPT	RC	CM	LM	SW
10	3/8	12	10.3	10.1	18.5	65	-
15	1/2	14	13.7	13.2	24	65	27
20	3/4	16	14.0	14.5	27	75	34
25	1	18	16.8	16.8	29.5	90	41
32	1 1/4	16	17.3	19.1	36	110	50
40	1 1/2	18	17.3	19.1	35	120	55
50	2	24	17.6	23.4	45	150	70
65	2 1/2	26	23.7	26.7	57	185	85
80	3	28	-	-	71	220	100

Body with Welded Connection

DN	ES	CS	LS	Ø DS	WS
10	20	26	80	17.2	1.6
15	19	34	100	21.3	1.6
20	20	39	115	26.9	1.6
25	26	43	130	33.7	2.0
32	26	45	145	42.4	2.0
40	26	49	160	48.3	2.0
50	26	50	175	60.3	2.0
65	26	50	210	76.1	2.3
80	26	88.5	266	88.9	2.3
(Dimensions for DIN EN ISO 1127 / ISO 4200 / DIN 11866 series B)

Body with Clamp Connection

DN	LC	CC	Ø D1 C	Ø D2 C	SC
15	156	49.0	50.5	21.3	1.6
20	150	56.5	50.5	26.9	1.6
25	160	58.0	50.5	33.7	2.0
32	200	57.5	50.5	42.4	2.0
40	200	69.0	64.0	48.3	2.0
50	230	77.5	77.5	60.3	2.6
(Dimensions for Clamp: DIN 32676 series B)

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.

Risk of injury from high pressure

Before working on the system or device, switch off the pressure and ventilate or empty the lines.