Barksdale Series 20495 - Manual (Page 2)

Barksdale, Inc. 3211 Fruitland Avenue, Los Angeles CA 90058 (800)835-1060 www.barksdale.com Bulletin No. 272354-B, 4-3-14
2
1.0 GENERAL
To ensure proper and safe operation of a Barksdale Regulator, the entire manual must be read and
understood clearly. Please pay special attention to all safety information.
This sign is used in this instruction is in case of hazards which might results in injuries and damages.
2.0 INTENDED USE
Barksdale's pressure regulators are sensitive, pressure-control devices used to maintain a pre-determined
pressure in a hydraulic circuit. The regulated output pressure is controlled by adjusting the spring force by air
or hydraulic motor or manually to balance the hydraulic loading. Design features ensure excellent accuracy,
repeatability and high flow coefficients. This regulator works on Shear-Seal® technology which uses fluid
pressure to maintain a leak-free metal to metal seal.
3.0 PED COMPLIANCE
To ensure that products intended for Europe meet the requirements of PED, it is necessary to determine the
proper PED classification. In the PED, pressure equipment can be classified one of the following categories.
• SEP (Sound Engineering Practice)
• Category I, II, III or IV
3.1 SEP Products
This product falls under SEP category as per PED directive
97/23/EC.
The SEP classification applies to pressure equipment that is not subject to Category I, II, III, or IV conformity
assessment, but must be designed and manufactured with “sound engineering practice” as defined by the
PED. SEP classified products do not and cannot have a CE mark.
3.2 Product Classification
Use the Table 1 below to find the PED category of a specific product. Due to PED Classification limitations,
some products may not be available at full rated pressures. Be sure to check the PED Product Classification
table for any limitations.
Table 1. PED categorization
Refer product configurator for more options.
4.0 SAFETY INFORMATION
The recommendations below are general and it is the responsibility of the user to assure that installation and
maintenance are in accordance with local requirements, API and ASME practices. This regulator should be
installed by a trained service person. A media filter should be in the system to protect the regulator. It should
not be installed for safety purpose. To maximize life it is suggested to follow ISO fluid cleanliness code
ISO4406:1999 or thereafter. Neither Barksdale nor its agents assume any liability for regulator improperly used
in the application or improperly installed and maintained.
MODEL DESCRIPTION PORT SIZE (In) DN (mm) PED CATEGORY
VALVE # Inlet / Outlet Inlet PSI Bar Annex II Category
20495 3/4" Hydraulic Regulator 1.0 / 1.0 25.4 5000 345 SEP
20495S6WQ2 Manual operated ‐ High Sensitivity 1.0 / 1.0 25.4 5000 345 SEP
20495S6WQ2‐1 Manual operated ‐ Full Range 1.0 / 1.0 25.4 5000 345 SEP
F20495S6WQ2 Air motor operated ‐ High Sensitivity 1.0 / 1.0 25.4 5000 345 SEP
F20495S6WQ2‐1 Air motor operated ‐ Full Range 1.0 / 1.0 25.4 5000 345 SEP
G20495S6WQ2 Hydraulic Motor Operated ‐ High Sensitivity 1.0 / 1.0 25.4 5000 345 SEP
G20495S6WQ2‐1 Hydraulic Motor Operated ‐ Full Range 1.0 / 1.0 25.4 5000 345 SEP
SUPPLY PRESSURE