Type 2032
BURKERT 20133890 (Type 2973) is a 2/2-way diaphragm valve with a manually operated actuator (FullFunction). The manual actuator with a plastic handwheel ensures use in hygienic or aggressive ambient conditions. The flow-optimized valve body with minimum dead space enables high flow values of up to 14.6 m³/h. The actuator has a compact, autoclavable design and possesses a visual position indicator with a reproducible stroke scale. It also features an adjustable minimum and maximum stroke limitation and locking mechanism.
Material Specifications
The 20133890 model features an investment cast 316L/1.4435 stainless steel body and an EPDM high-temperature diaphragm, suitable for medium temperatures from -10 °C to +143 °C.
| No. | Element | Material |
|---|---|---|
| 1 | Lock pin | Stainless steel 1.4305 |
| 2 | Screw | Stainless steel A2 |
| 3 | Handwheel cover | Polyamide (PA) |
| 4 | Handwheel | Polyphenylene sulphide (PPS) |
| 5 | Visual position indicator | Polyamide (PA) |
| 6 | Valve spindle | Stainless steel 1.4305 |
| 7 | Diaphragm socket | Stainless steel 1.4308 |
| 8 | Diaphragm | EPDM high-temperature |
| 9 | Valve body | Investment cast material 316L/1.4435 |
Dimensions
Manual Actuator
| Diaphragm size | H1 | H2 | H3 | H4 | ∅ B |
|---|---|---|---|---|---|
| 25 | 143 | 149 | 133 | 139 | 45 |
INFO
Dimensions in mm, unless otherwise stated.
Cast Valve Body (VG) with Welded Connection
| Diaphragm size | Port connection | ∅D1 | s | L | h | H |
|---|---|---|---|---|---|---|
| 25 | 1" (ASME BPE) | 25.4 | 1.65 | 114 | 20.0 | 39.0 |
Performance Specifications
Flow Characteristics
| Diaphragm size | Port connection | Kv value water [m³/h] |
|---|---|---|
| 25 | 1" | 14.6 |
Medium Pressure
| Diaphragm size | Maximum static operating pressure [bar] | Tightening torque (EPDM) [Nm] |
|---|---|---|
| 25 | 10 | 1.2 |
WARNING
The tightening torques refer to the static media pressures specified above. Excessive torque can shorten the service life of the diaphragm. A tolerance of +10% applies to the tightening torques specified.
Installation Notes
It is the responsibility of the installer and the operator to ensure self-draining. The marking on the port connection of the valve body serves as an orientation aid and must point upwards. The actual self-draining angle must be set with a suitable measuring tool.
Related Products
Explore similar products in our catalog
