BURKERT 20133488 (Type 2060) is a pneumatically operated 2/2-way angle seat valve equipped with a laser-welded stainless steel piston actuator, designed for demanding media and washdown process environments. The valve features an internal RC 3/4" (ISO 7-1) threaded port connection with a DN 20 nominal diameter and 20 mm seat orifice. Operated under Control Function B (CF B), the valve is held normally open by internal spring force and driven closed by pneumatic pilot air routed through port 2. The flow path is configured below the valve seat, allowing safe operation with liquids, gases, and steam without the risk of water hammer.

Engineered with an operating pressure rating from -0.9 bar(g) to 16 bar(g) and a medium temperature envelope from -10 °C to +185 °C, Burkert 20133488 incorporates a solid PTFE seat seal providing Leakage Rate A tight shut-off per DIN EN 12266-1. The self-adjusting spindle packing gland uses spring-compensated PTFE V-rings to maintain stem sealing integrity over extended operational cycles. The unit delivers a water flow coefficient Kv of 10 m³/h at +20 °C with 1 bar pressure drop. All wetted metallic and elastomeric components conform to EC Regulation 1935/2004 for food contact and support automated Clean-in-Place (CIP) and Sterilization-in-Place (SIP) routines.

Technical Specifications

Specification Parameter	Technical Value
Valve Identification	Burkert Type 2060 (Article No. 20133488)
Valve Construction	Complete 2/2-way angle seat valve with piston actuator
Port Connection Type	Internal pipe thread RC (ISO 7-1)
Port Thread Marking	RC 3/4"
Nominal Diameter (DN / NPS)	DN 20 (NPS 3/4")
Seat Orifice Diameter	20 mm
Flow Coefficient Kv (Water)	10 m³/h (+20 °C, 1 bar Δp across valve)
Control Function	B (CF B): Normally open by spring force, closes pneumatically
Flow Direction	Below seat (flow to open)
Operating Pressure Range	-0.9 bar(g) to 16 bar(g) (vacuum version without leakage bore)
Nominal Pressure Class	PN 25 (DIN EN 1333) / Class 150 (DIN EN 1759)
Pilot Pressure Range	2.0 bar(g) to 10.5 bar(g) (Actuator size 50 D)
Medium Temperature Range	-10 °C to +185 °C (continuous)
Ambient Temperature Range	0 °C to +130 °C (device limit -10 °C to +130 °C)
Maximum Fluid Viscosity	600 mm²/s
Pilot Medium	Neutral gases, instrument compressed air
Pilot Air Connection	G 1/8" internal thread bushing
Body Material	Cast stainless steel CF3M (316L equivalent)
Actuator Housing Material	Stainless steel 1.4404 (316L)
Seat Seal Material	PTFE (Polytetrafluoroethylene)
Piston Seal Material	FKM (Fluor rubber)
Spindle Seal	PTFE V-rings (filled), spring-compensated
Spindle Guide	Filled PTFE (Actuator size 50 D)
Seat Leakage Performance	Leakage rate A according to DIN EN 12266-1 (test medium air)
Degree of Protection	IP65 / IP67
Food Contact Compliance	EC Regulation 1935/2004 compliant manufacturer declaration
CIP / SIP Capability	Yes (steam sterilization up to 140 °C / 185 °C continuous rating)

Design and Material Construction

Burkert Type 2060 actuator size 50 (D) utilizes a laser-welded stainless steel housing that eliminates external contamination traps and permits deployment in corrosive atmospheres or washdown environments. A transparent polysulfone hood provides visual position indication, while internal components are constructed from corrosion-resistant austenitic stainless steels and technical polymers.

Item No.	Valve Element	Material Specification
1	Transparent cover (visual position indicator)	Polysulfone PSU
2	Pilot air connection port	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	Return spring	Stainless steel 1.4310
9	Pipe / bonnet neck	Stainless steel 1.4401 (316) / 1.4404 (316L)
10	Spindle packing gland	Filled PTFE V-rings with spring compensation
11	Valve spindle	Stainless steel 1.4401 (316) / 1.4404 (316L)
12	Spindle guide	Filled PTFE (Actuator size 50 D)
13	Swivel plate	Stainless steel 1.4401 (316) / 1.4404 (316L)
14	Seat seal	PTFE (Polytetrafluoroethylene)
15	Valve body	Stainless steel CF3M

Dimensions and Installation Interfaces

Physical dimensions for Burkert Type 2060 with actuator size 50 (D) and threaded body connections conform to metric pipeline engineering standards.

Actuator Dimensions by Orifice Size

DN	NPS	Actuator Size	Ø A [mm]	B/H max [mm]	K [mm]	Pilot Port P
10	3/8"	32 (B)	36.4	89.4	8.6	M5
15	1/2"	32 (B)	36.4	96.0	8.6	M5
15	1/2"	50 (D)	55.0	154.0	11.0	G 1/8
15	1/2"	70 (M)	75.0	174.0	11.0	G 1/8
20	3/4"	50 (D)	55.0	157.0	11.0	G 1/8
20	3/4"	70 (M)	75.0	180.0	11.0	G 1/8
25	1"	50 (D)	55.0	169.0	11.0	G 1/8
25	1"	70 (M)	75.0	184.0	11.0	G 1/8
25	1"	90 (N)	96.0	233.0	14.0	G 1/8
32	1 1/4"	70 (M)	75.0	193.0	11.0	G 1/8
32	1 1/4"	90 (N)	96.0	238.0	14.0	G 1/8
32	1 1/4"	130 (P)	137.0	283.0	14.0	G 1/8
40	1 1/2"	70 (M)	75.0	196.0	11.0	G 1/8
40	1 1/2"	90 (N)	96.0	242.0	14.0	G 1/8
40	1 1/2"	130 (P)	137.0	286.0	14.0	G 1/8
50	2"	70 (M)	75.0	214.0	11.0	G 1/8
50	2"	90 (N)	96.0	257.0	14.0	G 1/8
50	2"	130 (P)	137.0	301.0	14.0	G 1/8
65	2 1/2"	90 (N)	96.0	269.0	11.0	G 1/8
65	2 1/2"	130 (P)	137.0	314.0	14.0	G 1/8
80	3"	130 (P)	137.0	334.0	14.0	G 1/8

Note: Dimensions B/H and K represent maximum values and may decrease by up to 6 mm depending on port connection standard.

Threaded Body Dimensions (G, NPT, RC)

DN	NPS	E [G] (mm)	E [NPT] (mm)	E [RC] (mm)	CM (mm)	LM (mm)	SW (mm)
10	3/8"	12.0	10.3	10.1	18.5	65.0	—
15	1/2"	14.0	13.7	13.2	24.0	65.0	27
20	3/4"	16.0	14.0	14.5	27.0	75.0	34
25	1"	18.0	16.8	16.8	29.5	90.0	41
32	1 1/4"	16.0	17.3	19.1	36.0	110.0	50
40	1 1/2"	18.0	17.3	19.1	35.0	120.0	55
50	2"	24.0	17.6	23.4	45.0	150.0	70
65	2 1/2"	26.0	23.7	26.7	57.0	185.0	85
80	3"	28.0	—	—	71.0	220.0	100

Operating Characteristics and Pilot Pressure

Burkert 20133488 directs process media below the seat disc. This flow path uses upstream process pressure to assist the mechanical spring force during opening, ensuring stable operation with compressible and non-compressible media.

Risk of Pipe Rupture from Flow Above Seat

When operating with flow above the seat disc, closing against liquid media can generate severe water hammer, leading to fractured pipework and device destruction. Valves configured for flow above the seat must never be used with liquid media. Model 20133488 routes flow below the seat, making it fully safe for liquids, steam, and gases.

Fluidic Performance Data: Flow Below Seat (Threaded Bodies)

DN	NPS	Seat DN	Actuator Size	Kv Water [m³/h]	Min Pilot Press. [bar(g)]	Max Operating Pressure (CF A PTFE)	Max Operating Pressure (CF A PEEK)	Max Operating Pressure (CF B PTFE)
10	3/8"	10	32 (B)	2.4	5.5	16 bar	—	16 bar
8	1/4"	15	32 (B)	2.6	5.5	11 bar	—	16 bar
8	1/4"	15	50 (D)	2.6	4.1	16 bar	—	16 bar
8	1/4"	15	70 (M)	2.6	4.8	25 bar	25 bar	25 bar
10	3/8"	15	32 (B)	4.7	5.5	11 bar	—	16 bar
10	3/8"	15	50 (D)	5.3	4.1	16 bar	—	16 bar
10	3/8"	15	70 (M)	5.4	4.8	25 bar	25 bar	25 bar
15	1/2"	15	32 (B)	4.7	5.5	11 bar	—	16 bar
15	1/2"	15	50 (D)	5.3	4.1	16 bar	—	16 bar
15	1/2"	15	70 (M)	5.4	4.8	25 bar	25 bar	25 bar
20	3/4"	20	50 (D)	10.0	2.0–10.5	11 bar	8.5 bar	16 bar
20	3/4"	20	70 (M)	11.0	4.8	25 bar	25 bar	25 bar
25	1"	25	50 (D)	15.0	4.1	5.2 bar	—	16 bar
25	1"	25	70 (M)	20.0	4.8	16 bar	13.5 bar	25 bar
25	1"	25	90 (N)	21.0	5.0	25 bar	25 bar	25 bar
32	1 1/4"	32	70 (M)	30.0	4.8	8.5 bar	—	25 bar
32	1 1/4"	32	90 (N)	30.0	5.0	25 bar	19.5 bar	25 bar
40	1 1/2"	40	70 (M)	40.0	4.8	6.0 bar	—	25 bar
40	1 1/2"	40	90 (N)	44.0	5.0	16 bar	13.5 bar	25 bar
40	1 1/2"	40	130 (P)	47.0	5.0	25 bar	25 bar	25 bar
50	2"	50	90 (N)	55.0	5.0	10 bar	—	25 bar
65	2 1/2"	65	90 (N)	82.0	5.0	5.0 bar	—	11 bar
80	3"	80	130 (P)	140.0	5.6	10 bar	8.0 bar	11 bar

Pressure-Temperature Limits and Derating

Process pressure capability varies directly with fluid temperature according to international piping standards. The diagrams and derating tables define allowable operational boundaries.

Pressure Derating Tables by Standard

Temperature [°C]	Max Pressure PN25 (DIN EN 12516-1)	Max Pressure Class 150 (ASME B16.34)	Max Pressure 10K (JIS B 2220)
-10 to +38 °C	25.0 bar	19.0 bar (-29 to +38 °C)	14.0 bar
+50 °C	25.0 bar	18.4 bar	14.0 bar
+100 °C	24.5 bar	16.2 bar	14.0 bar
+150 °C	22.4 bar	14.8 bar	13.4 bar
+185 °C (Burkert 20133488)	21.0 bar (interpolated)	14.1 bar (interpolated)	12.8 bar (interpolated)
+200 °C	20.3 bar	13.7 bar	12.4 bar
+230 °C	19.0 bar	12.7 bar	11.7 bar

Optional Temperature and Vacuum Configurations

• Vacuum Version (Article 20133488): Manufactured without an atmospheric leakage bore, sustaining pressures down to -0.9 bar(g).
• High-Temperature Variant: Equipped with PEEK packing gland seals and PEEK seat discs, rated up to +230 °C for thermal transfer fluids.
• Water Variant: Configured with an adapted stem seal package extending cycle life with hot water up to +200 °C (recommended above +85 °C).
• Low-Temperature Variant: Rated for cryogenic or sub-ambient fluids down to -40 °C.

Installation and Commissioning Guidelines

Installation must be performed by qualified personnel using open-end wrenches on specified flats. Before piping installation, verify that connecting pipelines are aligned axially and purged of welding slag and particulates.

360° Rotatable Pneumatic Connection

The stainless steel actuator can be steplessly rotated through 360° around the valve body axis. This permits precise positioning of the pilot air ports to accommodate hose routing without loosening process pipe joints.

Body Tightening Torques

Valve Orifice Size (DN)	Assembly Tightening Torque [Nm]
DN 15	45 ± 3 Nm
DN 20 (Burkert 20133488)	50 ± 3 Nm
DN 25	60 ± 3 Nm
DN 32	65 ± 3 Nm
DN 40	65 ± 3 Nm
DN 50	70 ± 3 Nm
DN 65	100 ± 3 Nm

When installing the valve in systems conforming to DIN EN 161 ("Automatic shut-off valves for gas burners and gas appliances"), a strainer or dirt trap preventing penetration of a 1 mm test pin must be installed directly upstream.

Connect the pilot medium (instrument air, 2.0 to 10.5 bar) to pilot air port 2 for Control Function B. Pilot air hoses of sizes 6/4 mm or 1/4" are recommended. Install a silencer into unpressurized exhaust port 1 to reduce venting noise and exclude external contamination.

Maintenance, Servicing, and Spare Parts

The stainless steel piston actuator is maintenance-free under normal operating conditions. Regular visual checks should inspect fluid line connections for external leakage and examine the relief bore on the bonnet neck.

Actuator Size 50 (D) Packing Gland Service Restriction

According to Burkert operating instructions section 9.2.2, angle seat valves configured with actuator size 50 (D)—including Article 20133488—or size 70 (M) on DN 50 bodies do not support independent field replacement of the packing gland. When stem leakage occurs through the relief bore, replace the complete actuator assembly. The seat seal and swivel plate assembly (valve set) remains fully replaceable in the field.

Valve Set Replacement (Swivel Plate and Seal)

1. Ensure the line is fully depressurized and purged.
2. Unscrew the actuator from the valve body using an open-end wrench on the nipple hex flats.
3. Support the swivel plate cylindrical section using a prism support.
4. Drive out the retaining pin using a Ø 3 mm pin punch (for 10 mm spindle diameter).
5. Mount the replacement swivel plate, align the boreholes, insert the new pin, and caulk both borehole openings using a center punch.
6. Replace the body seal, grease nipple threads with Klüber-paste UH1 96-402, and tighten to 50 ± 3 Nm.

Valve Body Size (DN)	Valve Set Order Number (PTFE Seat Seal)
DN 15	011 134
DN 20 (Burkert 20133488)	011 171
DN 25	160 737
DN 32	011 208
DN 40	011 209
DN 50	216 431
DN 65	241 777

Automation Interfaces and Modular Accessories

Burkert Type 2060 pairs with modular accessories to provide discrete position feedback, mechanical stroke adjustment, and automated system integration.

Accessory Description	Applicable Actuator Size	Order Code
Stainless steel silencer kit (silencer + PTFE seal ring)	Universal (G 1/8)	696931
Maximum stroke limiter	Ø 50 (D), Ø 70 (M)	699550
Minimum and maximum stroke limiter	Ø 50 (D), Ø 70 (M)	699986
Single inductive proximity switch bracket kit	Ø 50 (D), Ø 70 (M)	699989
Dual inductive proximity switch bracket kit	Ø 50 (D), Ø 70 (M)	699990
Adapter kit for Type 8697 position feedback	Ø 50 (D), Ø 70 (M)	699551
Type 8697 pneumatic control / position feedback unit	Universal	on request

Combining Burkert Type 2060 with the Type 8697 position feedback head creates the factory-tested Type 8801-YV on/off ELEMENT valve system, featuring integrated mechanical or inductive limit switches, LED status display, and IP65/IP67 enclosure protection.