R/KSM

Pressure or Vacuum Relief Valve, In-Line

Features

10% Technology

for minimum pressure increase up to full

Extreme Tightness

resulting in lowest possible losses and reduced environmental pollution

Optimum Pressure Maintenance

based on , is close to opening pressure for optimum pressure in the system as compared to conventional 40% or 100% technology

For Over- and Underpressure

can be used as

Eccentric Design

eases installation close to floors and walls

High Flow Capacity

reduces costs through the use of smaller valves

Non-Corrosive

Weight Reduction

in comparison to steel/stainless steel

Different Plastics

can easily be combined

Function and Description

Pressure or Vacuum Relief Valve in Corner Design Made of Plastic

The PROTEGO® in-line valve R/KSM is a state-of-the-art pressure or vacuum relief valve in a right angle design made out of high-grade synthetic material. Typically, the valve is installed in the in-breathing or out-breathing lines of tanks, vessels, and process to protect against unallowable or underpressure. The valve prevents emission losses almost up to the set pressure and prevents unacceptable product entry. The valve is a perfect solution for corrosive, polymerizing, or sticky substances.

Full Lift Technology

The will start to open as soon as the set pressure is reached and only requires 10% overpressure to full lift. Continuous investments in and a commitment to research and development have allowed PROTEGO® to develop a low pressure valve which has the same opening characteristic as a high pressure safety relief valve. This “full lift type” technology allows the valve to be set at just 10% below the maximum allowable working pressure or (MAWP or MAWV) of the tank and still safely vent the required mass flow. The opening characteristic for pressure and vacuum side is the same.

Advanced Manufacturing Technology

Due to our highly developed manufacturing technology, the is maintained up to the set pressure with a tightness that is far above to the conventional standard. This feature is ensured by special valve seats made of high quality synthetic material or PTFE. After the overpressure is released or the vacuum is balanced, the valve re-seats and provides a tight . The optimized fluid dynamic design of the valve body and is a result of many years of research, resulting in stable operation of the valve pallet, optimized performance, and reduced product losses.

Product Data and Features

Dimensions

To select the nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), please use the flow capacity chart on the following page

DN	50 / 2"	80 / 3"	100 / 4"	150 / 6"	200 / 8"
a	200 / 7.87	245 / 9.65	300 / 11.81	370 / 14.57	625 / 24.61 (650 / 25.59)*
b	376 / 14.80	521 / 20.51	563 / 22.17 (523 / 20.59)*	687 / 27.05 (651 / 25.63)*	914 / 35.98 (912 / 35.91)*
c	150 / 5.91	200 / 7.87	225 / 8.86	280 / 11.02	350 / 13.78
d	180 / 7.09	250 / 9.84	300 / 11.81	350 / 13.78 (405 / 15.94)*	560 / 22.05 (500 / 19.68)*

Dimensions in mm / inches

* Dimensions in brackets only for PVDF

Material selection for housing

Design	A	B	C
Housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content.	PE	PP	PVDF
Valve seat Valve seat The valve seat is a component on which the valve pallet rests when the valve is closed.	PE	PP	PVDF
Gasket	FPM	FPM	FPM
Valve pallet	A, C, D	B, C, D	C, D

Special materials upon request

Material selection for valve pallet

Design	A	B	C	D
Pressure range [mbar] [inch W.C.]	±6,0 up to ±16 ±2.4 up to ±6.4	±5,5 up to ±16 ±2.2 up to ±6.4	±9,5 up to ±30 ±3.8 up to ±12	±30 up to ±100 ±12 up to ±40
Valve pallet	PE	PP	PVDF	Hastelloy
Sealing	PTFE	PTFE	PTFE	PTFE
Spindle guide	PE	PP	PVDF	Hastelloy

Special materials and devices with higher set pressure or vacuum are available upon request

Flange connection type

EN 1092-1; Form B1

ASME B16.5 CL 150 F.F.

other connections upon request

Design Types and Specifications

The valve pallet is weight loaded. Highest set pressure range can be reached with metal valve pallets.

In-line pressure or vacuum relief valve, standard designR/KSM -

Additional special devices available upon request
Within piping systems the influence of backpressure has to be considered in deciding the set pressure and opening characteristics.

Settings

Pressure or vacuum settings:	±6.0 mbar	±100 mbar
	±2.4 inch W.C.	±40 inch W.C.
	±4.0 mbar	±100 mbar
	±1.6 inch W.C.	±40 inch W.C.
	±4.5 mbar	±100 mbar
	±1.8 inch W.C.	±40 inch W.C.

Flow Capacity Chart

The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.

Tank connection for pressure relief function

Tank connection for vacuum relief function

Applications