Bellows low to high pressure valve for HP, UHP, corrosive gases and fluids – K300

K300 is a stop globe valve with bellows sealing and high tightness. It is dedicated to low pressure at ambient temperature and to following gases: vaccum, pure and ultra pure gases, combustible gases, oxidizing gases, toxic and corrosive gases, radioactive gases, noble gases. The valve is actuated either by a manual handwheel or a pneumatic actuator.

Key advantages

100% Helium leak test performed on all valves
Sustainable metallic bellows providing a high internal/ external tightness
Fluid specific seat material as standard options: Metal - Metal on request
Visual Open-Close indicator for both manual and pneumatic versions
Individual serial number for full traceability
Corrosion resistant internal option available: Hastelloy® bellows
Electropolished surface roughness
100% degreased for Oxygen use
Corrosion resistant external option available: Inox actuation for both manual and pneumatic versions

Contact an expert
Configure product
Download datasheet

CONSTRUCTION MATERIAL

	Parts	Material
Wetted parts	Body	SS 316L, VAR
	Seat	PCTFE or Vespel
	Bellows	SS 316L
	Head/body seal gasket	UNS N02201 (Nickel)
Non-wetted parts	Handwheel	Anodized aluminium
	Actuator Body	SS 316L and Painted anodized aluminium
	Others	SS 430F and C38500

SURFACE FINISH

-	EP4	EP2
Ra 0.8 μm	Ra 0.4 μm EP	Ra 0.25 μm EP

SEAT DIAMETER / FLOW CAPACITY/MAX WORKING PRESSURE

Valve	Seat diameter	Flow capacity (Cv)	Max. working pressure
K308	8mm	0.78	30 bar
K312	12mm	3	100 bar
K320	20mm	7	100 bar
K332	32mm	18	30 bar
K350	50mm	45	30 bar
K380	80mm	114	15 bar

All specifications subject to change without notice

MANUAL DIMENSIONS

MAN.	K308 LPMI	K312 LPMI	K312 HPMI	K320 LPMI	K320 HPMI	K332 LPMI	K350 LPMI	K380 LPMI
C	37mm (1.46")	51.5mm (2.03")	51.5mm (2.03")	51.5mm (2.03")	51.5mm (2.03")	62mm (2.44")	63mm (2.48")	275mm (10.83")
O	38.5mm (1.52")	55.5mm (2.19")	55.5mm (2.19")	56.5mm (2.22")	56.5mm (2.22")	70mm (2.76")	75mm (2.95")	297mm (11.69")
ØB	48mm (1.89")	70mm (2.76")	70mm (2.76")	70mm (2.76")	70mm (2.76")	108mm (4.25")	135mm (5.31")	195mm (7.68")
ØE (up to)	22.5mm (0.89")	31.5mm (1.24")	31.5mm (1.24")	38.5mm (1.52")	38.5mm (1.52")	52mm (2.05"	77mm (3.03")	120mm (4.72")
ØV	-	-	100mm (3.94")	-	100mm (3.94")	-	-	300mm (11.81")
ØVM	35mm (1.38")	50mm (1.97")		50mm (1.97")	-	125mm (4.92")	125mm (4.92")	-
He	41mm (1.61")	76.5mm (3.01")	76.5mm (3.01")	85.5mm (3.37")	85.5mm (3.37")	102mm (4.02")	125.5mm (4.94")	175mm (6.89")
L	90mm (3.54")	140mm (5.51")	140mm (5.51")	140mm (5.51")	140mm (5.51")	180mm (7.09")	250mm (9.84")	400mm (15.75")
N	45mm (1.77")	70mm (2.76")	70mm (2.76")	75mm (2.95")	75mm (2.95")	110mm (4.33")	150mm (5.90")	235mm (9.25")

PNEUMATIC DIMENSIONS

PNEU.	K308 LPNC/LPNO	K312 LPNC/LPNO	K312 HPNC/HPNO	K320 LPNC/LPNO	K320 HPNC/HPNO	K332 LPNC/LPNO	K350 LPNC/LPNO	K380 LPNC/LPNO
C	11mm (0.43")	32mm (1.26")	32mm (1.26")	32mm (1.26")	32mm (1.26")	32mm (1.26")	27mm (1.06")	26mm (1.02"
O	12.5mm (0.49")	36mm (1.42")	36mm (1.42")	37mm (1.46")	37mm (1.46")	40mm (1.57")	39mm (1.53")	38mm (1.50")
ØB	48mm (1.89")	70mm (2.76")	70mm (2.76")	70mm (2.76")	70mm (2.76")	108mm (4.25")	135mm (5.31")	195mm (7.68")
ØE (up to)	22.5mm (0.89")	31.5mm (1.24")	31.5mm (1.24")	38.5mm (1.52")	38.5mm (1.52")	52mm (2.05")	77mm (3.03")	120mm (4.72")
ØV	58mm (2.28")	100mm (3.94")	100mm (3.94")	100mm (3.94")	100mm (3.94")	185mm (7.28")	255mm (10.04")	255mm (10.04")
He	87mm (3.42")	138mm (5.43")	166.5mm (6.56")	176mm (6.93")	202mm (7.95")	267mm (10.51")	347mm (13.66")	441mm (17.36")
L	90mm (3.54")	140mm (5.51")	140mm (5.51")	140mm (5.51")	140mm (5.51")	180mm (7.09")	250mm (9.84")	400mm (15.75")
N	45mm (1.77")	70mm (2.76")	70mm (2.76")	75mm (2.95")	75mm (2.95")	110mm (4.33")	150mm (5.90")	235mm (9.25")

Dimensions are for reference only and are subject to change without notice

Specifications

Fluid media	Standard, high and ultra high purity and corossive gases or liquids
Pneumatic actuator operating pressure	0.5 - 0.7 MPa (5 - 7 bar)
Temperature range	233.15 K to 393.15 K (-40°C to +120°C)*
Max. working pressure	See table above
Flow capacity (cv)	See table above
Nominal seat diameter	See table above
Certified max. helium outboard leak rate (at max. pressure)	≤ 1.10-10 Pa.m3 .s^-1
Certified max. helium across the seat leak rate (at max. pressure)	≤ 3.10-10 Pa.m3 .s^-1

Dimensional drawings

Product Configurator

	Size	Pressure-range (1)	Actuation	Body material	Seat material	End-connection (2)	Surface finish	Options (3)
K3	08	LP	MI	I	/K	BWO	-	-
	Seat Ø8mm 08 Seat Ø12mm 12 Seat Ø20mm 20 Seat Ø32mm 32 Seat Ø50mm 50 Seat Ø80mm 80	Low-pressure (15/30 bar version) LP High-pressure (100 bar version) HP	Manual MI Pneumatic normally closed NC Pneumatic normally open NO	SS316L I	PCTFE /K PI (Vespel®) /V	Butt welded orbital BWO Butt welded BW Socket welded SW Metal face seal - Male MV Metal face seal - Female FV	O Ra 0.8µm - Ra 0.4µm (electropolished) EP4 Ra 0.25µm (electropolished) EP2	No option - Bottom support(4) FP Actuator vent for H2 H2 Solenoid valve EV Double limit switches MRE2 Proximity sensors (ATEX) DPI2 Purge port (2) PGP

I am interested

(1) High-pressure version available for K312 and K320
(2) Size to be defined by customer and ROTAREX
(3) Combinable
(4) Only for K308 and K312

Downloadable catalogs, brochures

Line Valves for UHP, Speciality and Cryogenic gases and fluids

Last update: Sep 02, 2024
Available in: en/FR/CN/KR