GESTRA AK 45 PN 40 DN 15–25

Condensate Drain Valve

Description

GESTRA AK 45 Condensate Drain Valve | PN 40 DN 15–25

The AK 45 automatically drains condensate from steam systems during start-up, until the pressure in the system has reached the adjusted valve closing pressure.

At shut-down or when the pressure falls below the closing pressure the valve opens and accumulated condensate is automatically drained away.

Function

When there is no pressure the drain valve is held in the open position by the integral spring. As soon as the service pressure has reached the closing pressure to which the AK 45 has been adjusted, the valve closes (by the differential pressure acting on the valve cone against the force of the spring). When the pressure drops below the closing pressure, the AK 45 opens by spring force.

A hand purging knob is provided, so that the AK 45 can be opened by hand with the system under pressure to clear any deposits from the valve seat area.

The AK 45 is adjusted at our works to close at a differential pressure of 0.8 bar (12 psig).

The AK 45 is provided with an integral strainer.

Technical Data

Flanges

■ DIN, PN 40

ANSI 150 and 300
S. 10, table E, F, H and J

Screwed sockets:

BSP and NPT

Technical Data

Pressure/Temperature Rating
Max. service	[barg]	32	22	21
pressure	[psig]	465	320	305
Related	[°C]	250	385	400
temperature	[°F]	482	725	842

Materials	DIN reference	ASTM equivalent
Body	C 22.8 (1.0460)	A 105
Cover screws	24 CrMo 5 (1.7258)	ASTM A 193 B 7
Other internals	Stainless steel

Dimensions and Weights		End connections
Dimensions and Weights		Flanged			Screwed
Nominal size	[mm] [in]	15 ½	20 ¾	25 1	15 ½	20 ¾	25 1
Dimensions	L	150	150	160	95
	H1		70		70
	H2		97		97
Approx. weight	[kg]	3.7	4.3	4.8	2.2	2.1	2.0

Flange dimensions		End connections
Flange dimensions		DIN			CL 150			CL 300
Flange	D	95	105	115	88.9	98.4	107.9	95.2	117.5	123.8
dimensions	b	16	18	18	11.1	12.7	14.3	14.3	15.9	17.5
	k	65	75	85	60.3	69.8	79.4	66.7	82.5	88.9
	g	45	58	68	34.9	42.9	50.8	34.9	42.9	50.8
	l	14	14	14	15.9	15.9	15.9	15.9	19.0	19.0
Number of bolts		4	4	4	4	4	4	4	4	4

GESTRA AK 45 PN 40 DN 15–250

Condensate Drain Valve

GESTRA: The Ultimate Solution for Industrial Steam & Fluid Control Systems

GESTRA AK 45 Condensate Drain Valve – PN 40, DN 15, 20, 25 (½", ¾", 1")

High-Performance Condensate Drain Valve for Industrial Steam Systems

The GESTRA AK 45 Condensate Drain Valve is a premium solution designed for efficient condensate discharge in industrial steam and process systems. Manufactured with German engineering precision, the AK 45 valve ensures maximum operational safety, long service life, and reliable performance under demanding conditions.

If you are searching for an original GESTRA condensate drain valve, PN 40 drain valve, or DN 15–25 condensate valve, the GESTRA AK 45 is the industry-trusted choice.

Why Choose GESTRA AK 45 Condensate Drain Valve?

GESTRA is globally recognized for its expertise in steam and condensate management. The AK 45 is specifically engineered to provide safe manual draining of condensate, preventing water hammer, corrosion, and system inefficiencies.

Key Benefits:

✅ Pressure rating PN 40
✅ Sizes DN 15, DN 20, DN 25 (½”, ¾”, 1″)
✅ Robust, corrosion-resistant construction
✅ Smooth and controlled condensate discharge
✅ Minimal maintenance, long service life

Technical Specifications – GESTRA AK 45

Specification	Details
Product Type	Condensate Drain Valve
Model	GESTRA AK 45
Pressure Rating	PN 40
Nominal Sizes	DN 15, DN 20, DN 25
Inch Sizes	½”, ¾”, 1″
Application	Steam & condensate systems
Standard	Industrial DIN compliant

Applications of GESTRA AK 45 Condensate Drain Valve

The GESTRA AK 45 is widely used in:

Its precise flow control makes it ideal for safe condensate removal during start-up, maintenance, and operation.

Advantages of Using Original GESTRA AK 45

Choosing a genuine GESTRA AK 45 condensate drain valve ensures:

High reliability and operational safety
Reduced risk of water hammer
Improved steam system efficiency
Compliance with international quality standards
Lower long-term maintenance costs

Using non-original or low-quality drain valves can lead to leakage, premature failure, and system damage.

GESTRA AK 45 vs Standard Drain Valves

Unlike generic drain valves, the GESTRA AK 45 is engineered specifically for steam and condensate applications, offering:

Better sealing performance
Higher resistance to temperature and pressure fluctuations
Consistent operation under industrial conditions

This makes the AK 45 a preferred choice for engineers, maintenance teams, and procurement professionals.

Buy Original GESTRA AK 45 Condensate Drain Valve

We supply 100% original GESTRA AK 45 Condensate Drain Valves with competitive pricing and fast delivery. Available in DN 15, DN 20, DN 25 (½”, ¾”, 1″), suitable for PN 40 steam systems.