BURKERT Type 2060 pneumatically operated angle seat valve with stainless steel actuators fulfils 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. As part of the Bürkert process valve range, a large accessory program is available.

General Technical Data

Property	Value
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) (option)
Nominal pressure	PN 25 (DIN EN 1333), Class 150 (DIN EN 1759)
Pilot pressure	2...10.5 bar(g) (Actuator size B: 2...7 bar(g))
Seat leakage	Leakage rate A (DIN EN 12266-1), seat seal PTFE and PEEK, test medium air
Medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents
Medium temperature	-40 °C...+230 °C
Ambient temperature	-10 °C...+130 °C
Degree of protection	IP65/67
Installation position	As required, preferably with actuator upright

Control Functions

Depending on the variant, the valve seat is closed with or against the medium flow. Spring action (CF A) or pneumatic pilot pressure (CF B and CF I) generate the closing force on the swivel plate.

• Control function A (CF A): Pneumatically operated 2/2-way on/off valve. Normally closed by spring force.
• Control function B (CF B): Pneumatically operated 2/2-way on/off valve. Normally opened by spring force.
• Control function I (CF I): Actuating function via reciprocal pressurization.

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.

Materials

Actuator size 50 (D), 70 (M), 90 (N), 130 (P)

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, PEEK (optional), NBR (optional), FKM (optional)
15	Valve body	Stainless steel CF3M

Dimensions

Actuator

Nominal diameter (port connection)	Actuator size Ø	Ø A	B/H	K	P
DN 15 (1/2")	50 (D)	55	154	11	G 1/8
DN 20 (3/4")	50 (D)	55	157	11	G 1/8
DN 25 (1")	50 (D)	55	169	11	G 1/8
DN 32 (1 1/4")	70 (M)	75	193	11	G 1/8
DN 40 (1 1/2")	90 (N)	96	242	14	G 1/8
DN 50 (2")	130 (P)	137	301	14	G 1/8

(Note: Dimensions in mm. Excerpt of common sizes. The dimensions for B, H and K are maximum dimensions and may be up to 6 mm less, depending on the connection orifice size and standard.)

Body with Threaded Connection

Nominal diameter	G	NPT	RC	CM	LM	SW
DN 15 (1/2")	14	13.7	13.2	24	65	27
DN 20 (3/4")	16	14.0	14.5	27	75	34
DN 25 (1")	18	16.8	16.8	29.5	90	41
DN 32 (1 1/4")	16	17.3	19.1	36	110	50
DN 40 (1 1/2")	18	17.3	19.1	35	120	55
DN 50 (2")	24	17.6	23.4	45	150	70

Performance Specifications

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.

Operating Limits for Optional Variants

• High-temperature variant: Thanks to an adaption of the packing gland and seat seal in PEEK, this variant is suitable for applications with steam, neutral gases and other heat transfer mediums up to +230 °C.
• Water variant: For applications with water up to +200 °C, a special configuration of the packing gland increases service life significantly. It is recommended for water temperatures starting at +85 °C.
• Vacuum variant: Without leakage bore, this design is suitable for pressures down to -0.9 bar(g).
• Low-temperature variant: Suitable for minimum medium temperatures down to -40 °C.