GESTRA RK 16A | ASME 150/300 PN 40

Non-Return Valve

Pressure/Temperature Rating

Nominal size DN	15 – 100 (½–4″)
Nominal pressure PN	402)
[bar g] Max. service pressure [psi g]	46.6 676	42.3 612	35.8 518	31.6 459	29.3 425	24 348
Related temperature [°C]	20	100	200	300	400	550
Minimum temperature 3)	–200 °C (–328°F)

1) For temperatures above 300 °C (572°F) use a Nimonic spring.

Linear interpolation between pressure and temperature ratings permitted.

2) In terms of resistance also rated for ASME Class 300.

3) Minimum temperature for nominal pressure rating.

Soft seats

EPDM: (ethylene propylene): –40 to +150°C (–40 to +302°F) for water, condensate and steam. FPM: (fluoro rubber): –25 to +200°C (–13 to +392°F) for oils, gases and air.

Also note valve pressure/temperature rating in the above table.

Tightness with soft seats of EPDM and FPM in accordance with DIN 3230-3, leakage rates BN 1, BO 1. Permissible leakage rates with metal-to-metal seat in accordance with DIN 3230-3, leakage rates BN 2, BO 3.

Connections of wafer-type valves

Optionally for fitting between flanges to
DIN	BS	ASME
DIN 2501 PN 10 – 40⁴)	BS 10 tables D, E	ASME B 16.1 class 125 FF
DIN 2512, 2513	or table F	ASME B 16.5 class 150 RF
2514	or tables H, J	ASME B 16.5 class 300 RF

4) For valves of DN 100 mm (4″) state PN 10/16 or PN 25/40.

Dimensions

[mm]	DN	[in]	L5) [mm]	Dimensions in [mm] Æ D				Weight [kg]
				ASME		DIN
				150 RF	300 RF	PN 10 – 40	2512 2513
15	½		25	46	52	52		0.25
20	¾		31.5	56	63	63		0.4
25	1		35.5	66	72	72		0.57
32	1¼		40	75	81	81		0.83
40	1½		45	85	93	93		1.2
50	2		56	104	108	108		2.15
65	2½		63	123	128	128		3.2
80	3		71	135	147	143		4.5
100	4		80	173	179	163/169 ⁶)		6.9

5) Overall length according to DIN EN 558-2, table 11, series 52 (; DIN 3202, part 3, series K5)

6) For counter-flanges PN 25/40 with raised face Æ D = 169 mm.

Materials*)

DIN reference

ASTM equivalent

Body, seat, guide ribs, valve disc,

spring retainer

X 6 CrNiMoTi 1712 2

1.4571

A182 F 316

Spring

X 6 CrNiMoTi 1712 2

1.4571

A313 Type 316

*) For the use in hygienic installations, foodstuff industry, pharmaceutical industry and similar applications please order RK 16A in pickled design.

GESTRA RK 16A | ASME 150/300 PN 40

Non-Return Valve

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

GESTRA Non-Return Valve RK 16A – High-Pressure Check Valve for Industrial Piping Systems

Reliable Non-Return Valve for ASME Class 150 / 300 and PN 10 / 16 / 25 / 40 Applications

The GESTRA Non-Return Valve RK 16A is a heavy-duty, high-performance check valve engineered for demanding industrial applications requiring reliable backflow prevention. Designed to operate with ASME Class 150 and 300 flanged systems, as well as PN 10, PN 16, PN 25, and PN 40, the RK 16A delivers exceptional safety, durability, and efficiency.

Available in sizes DN 15–100 mm (½”–4″), the GESTRA RK 16A non-return valve is an ideal solution for steam, condensate, water, and industrial process pipelines.

Why Choose GESTRA Non-Return Valve RK 16A?

GESTRA is a world-class manufacturer known for precision German engineering and long-term reliability. The RK 16A check valve is specifically designed to protect pipelines, pumps, boilers, and equipment from damaging reverse flow under high-pressure operating conditions.

Key Advantages:

Reliable backflow prevention under high pressure
Compatible with ASME and EN pressure standards
Robust construction for long service life
Low maintenance and high operational safety
Proven performance in industrial environments

Technical Specifications – GESTRA RK 16A

Specification	Details
Product Type	Non-Return Valve / Check Valve
Model	RK 16A
Pressure Ratings (EN)	PN 10 / PN 16 / PN 25 / PN 40
Pressure Ratings (ASME)	Class 150 / Class 300
Nominal Diameter	DN 15–100 mm
Pipe Size	½” – 4″
Installation	Flanged
Applications	Steam, condensate, water, process fluids
Manufacturer	GESTRA

Engineered for High-Pressure Industrial Applications

The GESTRA RK 16A non-return valve is optimized for high-pressure and high-temperature systems, making it ideal for critical industrial processes. Its robust valve design ensures fast closing response, reduced pressure loss, and reliable sealing even under fluctuating operating conditions.

Typical Applications:

Steam and condensate systems
Power plants and energy facilities
Oil, gas, and petrochemical industries
Chemical processing plants
Industrial heating and cooling systems

Dual Standard Compatibility: ASME & PN

One of the main advantages of the GESTRA RK 16A check valve is its dual-standard compatibility. The valve supports both ASME Class 150 / 300 and European PN 10 / 16 / 25 / 40, making it an excellent choice for international projects and mixed-standard piping systems.

Compact Design with Maximum Reliability

Despite its heavy-duty performance, the GESTRA RK 16A non-return valve features a compact design that allows easy installation and efficient use of space. The valve minimizes flow resistance while ensuring secure backflow protection.

Why Buy Original GESTRA RK 16A Non-Return Valve?

Choosing an original GESTRA Non-Return Valve RK 16A ensures:

Genuine GESTRA quality and engineering
Compliance with international pressure standards
Extended service life and reduced downtime
Safe and stable industrial operation
Long-term cost efficiency

Order GESTRA Non-Return Valve RK 16A Today

If you are looking for a high-quality non-return valve for ASME Class 150 / 300 or PN 10–40 systems, the GESTRA RK 16A is the perfect solution. Its proven reliability, wide pressure range, and global standard compatibility make it one of the top industrial check valves available today.

Contact us now for pricing, technical data, and availability of GESTRA Non-Return Valve RK 16A DN 15–100 mm (½”–4″).