BURKERT 466450 (Type 2012) is an externally piloted globe valve consisting of a pneumatically operated piston actuator and a 2/2-way valve body. The actuator is made of PA (Polyamide). The reliable self-adjusting packing gland provides high sealing integrity. These maintenance-free and robust valves can be retro-fitted with a comprehensive range of accessories for position indication, stroke limitation, or manual override.

General Technical Data

Product properties
Design	Globe valve
Nominal diameter	DN 10...DN 100, NPS 3/8...NPS 4
Safety setting	Normally closed (control function A)
Flow direction	Flow to open (below seat)
Operating pressure	0...25 bar(g) (Model 466450 is rated 0...14 bar)
Pilot pressure	2...10 bar(g)
Seat leakage	Leakage rate A (DIN EN 12266 - 1), seat seal PTFE, test medium air
Medium	Steam, water, neutral gases, alcohols, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents
Medium temperature	-10 °C...+185 °C (for PA actuator)
Viscosity	Max. 600 mm²/s
Control medium	Air, neutral gases
Degree of protection	IP67
Installation position	As required, preferably with actuator in upright position

Materials

No.	Element	Material (Stainless steel body with PA actuator)
1	Transparent cover	PC
2	Actuator	PA
3	Piston seal	NBR
4	Pilot air ports	Stainless steel 1.4305
5	Spindle seal	PTFE V-Rings (filled), with spring compensation
6	Spring	Stainless steel 1.4310
7	Pipe	Stainless steel 1.4401 or 316L
8	Wiper	PTFE (filled)
9	Body seal	Graphite, PTFE (option)
10	Spindle	Stainless steel 1.4401 or 1.4404
11	Swivel plate	Stainless steel 1.4401 or 1.4404
12	Pin	Stainless steel 1.4401
13	Seat seal	PTFE
14	Valve seat with O-Ring	Stainless steel 1.4571, EPDM
15	Valve body	Stainless steel CF3M

Control Functions

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

Dimensions

Actuator

Nominal diameter	Actuator size ∅	∅ A	H	P	HS
DN	[mm]	[mm]	[mm]	[inch]	[mm]
40	80 (F)	101	299	G 1/4	395
40	125 (H)	157	395	G 1/4	488

Body with Welded Connection

Nominal diameter	ES	LS	ASME BPE / DIN 11866 series C
NPS	[mm]	[mm]	∅ DS [mm] / WS [mm]
1 1/2	26	140	38.1 / 1.65

Performance Specifications

Operating Limits for Ambient and Medium Temperature

For PA actuators, the combination of maximum medium temperature and maximum ambient temperature is shown in the following diagram:

INFO

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.