Burkert 772145 Type 2651 is a 2/2-way stainless steel flanged ball valve used to shut off and distribute medium flows. The ball valve can be connected via the mechanical interface according to ISO 5211 with a pneumatic rotary actuator (e.g., Type 2051, Type 2052, Type 2053) or electrical rotary actuator (e.g., Type 3003, Type 3004, Type 3005).

• Stainless steel ball valve
• High flow rate
• High medium pressure
• Long service life
• ISO 5211 mounting flange

General Technical Data

Product properties
Seal	PTFE (ball seal), FKM (stem seal)
Body	Stainless steel 1.4408/316
Ball	Stainless steel 1.4401/316
Stem	Stainless steel 1.4401/316
Medium temperature	-10 °C...+ 200 °C
Actuator-side interface	According to EN ISO 5211

Performance Specifications

Pressure Temperature Diagram

Torques

The values were measured under the following conditions: Max. Δp, ambient temperature, medium: water.

DN	8	10	15	20	25	32	40	50
Breakaway torque [Nm]	13	13	16	25	31	53	76	99
Running torque [Nm]	10	10	13	20	24	43	60	80

(Note: The specific breakaway torque for model 772145 is 42 Nm, and running torque is 40 Nm.)

Installation

DANGER!

Risk of injury from high pressure in the equipment. There is a serious risk of injury when reaching into the equipment. ▶ Turn off the pressure and release the pressure in the pipes before loosening pipes and valves.

WARNING!

Risk of injury due to improper installation. Improper installation may result in injuries as well as damage to the device and the area around it. ▶ This work may be carried out by authorised technicians only and with the appropriate tools.

Tightening Torques for Flange Installation

Size	Tightening torque Type 2651 flange [Nm]
DN15 (1/2")	19.6
DN20 (3/4")	19.6
DN25 (1")	39.2
DN32 (1 1/4")	39.2
DN40 (1 1/2")	65.7
DN50 (2")	65.7
DN65 (2 1/2")	65.7
DN80 (3")	86.2
DN100 (4")	86.2