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Pressure reducing valve from Sun Hydraulics

Description

Pilot-operated, pressure reducing valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, allowing circuits with multiple pressure requirements to be operated using a single pump.

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  • These valves have the main stage orifice drilled into the piston rather than a staked-in orifice. This allows the valve to survive physically demanding applications.
  • W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
  • Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a separate check valve to the circuit.
  • If pilot flow consumption is critical, consider using direct acting reducing/relieving valves.
  • Recommended maximum inlet pressure is determined by the adjustment range. Ranges D, E, N, and Q are tested with a 2000 psi (140 bar) maximum differential between inlet and reduced pressure. Ranges A, B, and H are tested with a 3000 psi (210 bar) maximum differential between inlet and reduced pressure. Ranges C and W are tested with 5000 psi (350 bar) of inlet pressure.
  • Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
  • Pilot operated reducing, reducing/relieving valves by nature are not fast acting valves. For superior dynamic response, consider direct acting valves.
  • All three-port pressure reducing and reducing/relieving cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size). When considering mounting configurations, it is sometimes recommended that a full capacity return line (port 3) be used with reducing/relieving cartridges.
  • Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.

Technical Data

Note: Data may vary by configuration. See CONFIGURATION section.

Cavity T-11A
Series 1
Capacity 10 gpm
Capacity (metric) 40 L/min.
Maximum Operating Pressure 5000 psi
Maximum Operating Pressure (metric) 350 bar
Factory Pressure Settings Established at blocked control port (dead headed)
Control Pilot Flow 7 – 10 in³/min.
Control Pilot Flow (metric) 0,11 – 0,16 L/min.
Adjustment – No. of CW Turns from Min. to Max. setting 5
Valve Hex Size 7/8 in.
Valve Hex Size (metric) 22,2 mm
Valve Installation Torque 30 – 35 lbf ft
Valve Installation Torque (metric) 41 – 47 Nm
Adjustment Screw Internal Hex Size 5/32 in.
Adjustment Screw Internal Hex Size (metric) 4 mm
Locknut Hex Size 9/16 in.
Locknut Hex Size (metric) 15 mm
Locknut Torque 80 – 90 lbf in.
Locknut Torque (metric) 9 – 10 Nm
Model Weight 0.35 lb.
Model Weight (metric) 0.16 kg.
Seal kit – Cartridge Viton: 990011006

Configuration Options

Control

C Tamper Resistant – Factory Set
K Handknob
L Standard Screw Adjustment
O Handknob with Panel Mount
W Hex Wrench Adjustment

Adjustment Range

A 100 – 3000 psi (7 – 210 bar), 200 psi (14 bar) Standard Setting
B 50 – 1500 psi (3,5 – 105 bar), 200 psi (14 bar) Standard Setting
D 25 – 800 psi (1,7 – 55 bar), 200 psi (14 bar) Standard Setting
E 25 – 400 psi (1,7 – 28 bar), 200 psi (14 bar) Standard Setting
G 60 – 3000 psi (4 – 210 bar), 200 psi (14 bar) Standard Setting
K 75 – 1500 psi (5 – 105 bar), 200 psi (14 bar) Standard Setting
N 60 – 800 psi (4 – 55 bar), 200 psi (14 bar) Standard Setting
P 40 – 400 psi (2,8 – 28 bar), 200 psi (14 bar) Standard Setting
Q 60 – 400 psi (4 – 28 bar), 200 psi (14 bar) Standard Setting
W 150 – 4500 psi (10,5 – 315 bar), 200 psi (14 bar) Standard Setting
C 150 – 6000 psi (10,5 – 420 bar), 200 psi (14 bar) Standard Setting

Seal Material

N Buna-N
V Viton

Material/Coating

/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
Cavity: T-11A
Nominal Capacity: 40 lpm (10 gpm)
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Possible variants

PBDF8DN, PBDF-8DN, PBDF8DV, PBDF-8DV, PBDF8WN, PBDF-8WN, PBDF8WV, PBDF-8WV, PBDFCAN, PBDF-CAN, PBDFCAN/AP, PBDF-CAN/AP, PBDFCAN/LH, PBDF-CAN/LH, PBDFCAV, PBDF-CAV, PBDFCAV/AP, PBDF-CAV/AP, PBDFCAV/LH, PBDF-CAV/LH, PBDFCBN, PBDF-CBN, PBDFCBN/AP, PBDF-CBN/AP, PBDFCBN/LH, PBDF-CBN/LH, PBDFCBV, PBDF-CBV, PBDFCBV/AP, PBDF-CBV/AP, PBDFCBV/LH, PBDF-CBV/LH, PBDFCCN, PBDF-CCN, PBDFCCN/AP, PBDF-CCN/AP, PBDFCCN/LH, PBDF-CCN/LH, PBDFCCV, PBDF-CCV, PBDFCCV/AP, PBDF-CCV/AP, PBDFCCV/LH, PBDF-CCV/LH, PBDFCDN, PBDF-CDN, PBDFCDN/AP, PBDF-CDN/AP, PBDFCDN/LH, PBDF-CDN/LH, PBDFCDV, PBDF-CDV, PBDFCDV/AP, PBDF-CDV/AP, PBDFCDV/LH, PBDF-CDV/LH, PBDFCEN, PBDF-CEN, PBDFCEN/AP, PBDF-CEN/AP, PBDFCEN/LH, PBDF-CEN/LH, PBDFCEV, PBDF-CEV, PBDFCEV/AP, PBDF-CEV/AP, PBDFCEV/LH, PBDF-CEV/LH, PBDFCGN, PBDF-CGN, PBDFCGN/AP, PBDF-CGN/AP, PBDFCGN/LH, PBDF-CGN/LH, PBDFCGV, PBDF-CGV, PBDFCGV/AP, PBDF-CGV/AP, PBDFCGV/LH, PBDF-CGV/LH, PBDFCKN, PBDF-CKN, PBDFCKN/AP, PBDF-CKN/AP, PBDFCKN/LH, PBDF-CKN/LH, PBDFCKV, PBDF-CKV, PBDFCKV/AP, PBDF-CKV/AP, PBDFCKV/LH, PBDF-CKV/LH, PBDFCNN, PBDF-CNN, PBDFCNN/AP, PBDF-CNN/AP, PBDFCNN/LH, PBDF-CNN/LH, PBDFCNV, PBDF-CNV, PBDFCNV/AP, PBDF-CNV/AP, PBDFCNV/LH, PBDF-CNV/LH, PBDFCPN, PBDF-CPN, PBDFCPN/AP, PBDF-CPN/AP, PBDFCPN/LH, PBDF-CPN/LH, PBDFCPV, PBDF-CPV, PBDFCPV/AP, PBDF-CPV/AP, PBDFCPV/LH, PBDF-CPV/LH, PBDFCQN, PBDF-CQN, PBDFCQN/AP, PBDF-CQN/AP, PBDFCQN/LH, PBDF-CQN/LH, PBDFCQV, PBDF-CQV, PBDFCQV/AP, PBDF-CQV/AP, PBDFCQV/LH, PBDF-CQV/LH, PBDFCWN, PBDF-CWN, PBDFCWN/AP, PBDF-CWN/AP, PBDFCWN/LH, PBDF-CWN/LH, PBDFCWV, PBDF-CWV, PBDFCWV/AP, PBDF-CWV/AP, PBDFCWV/LH, PBDF-CWV/LH, PBDFKAN, PBDF-KAN, PBDFKAV, PBDF-KAV, PBDFKBN, PBDF-KBN, PBDFKBV, PBDF-KBV, PBDFKCN, PBDF-KCN, PBDFKCV, PBDF-KCV, PBDFKDN, PBDF-KDN, PBDFKDV, PBDF-KDV, PBDFKEN, PBDF-KEN, PBDFKEV, PBDF-KEV, PBDFKGN, PBDF-KGN, PBDFKGV, PBDF-KGV, PBDFKKN, PBDF-KKN, PBDFKKV, PBDF-KKV, PBDFKNN, PBDF-KNN, PBDFKNV, PBDF-KNV, PBDFKPN, PBDF-KPN, PBDFKPV, PBDF-KPV, PBDFKQN, PBDF-KQN, PBDFKQV, PBDF-KQV, PBDFKWN, PBDF-KWN, PBDFKWV, PBDF-KWV, PBDFLAN, PBDF-LAN, PBDFLAN/AP, PBDF-LAN/AP, PBDFLAN/LH, PBDF-LAN/LH, PBDFLAV, PBDF-LAV, PBDFLAV/AP, PBDF-LAV/AP, PBDFLAV/LH, PBDF-LAV/LH, PBDFLBN, PBDF-LBN, PBDFLBN/AP, PBDF-LBN/AP, PBDFLBN/LH, PBDF-LBN/LH, PBDFLBV, PBDF-LBV, PBDFLBV/AP, PBDF-LBV/AP, PBDFLBV/LH, PBDF-LBV/LH, PBDFLCN, PBDF-LCN, PBDFLCN/AP, PBDF-LCN/AP, PBDFLCN/LH, PBDF-LCN/LH, PBDFLCV, PBDF-LCV, PBDFLCV/AP, PBDF-LCV/AP, PBDFLCV/LH, PBDF-LCV/LH, PBDFLDN, PBDF-LDN, PBDFLDN/AP, PBDF-LDN/AP, PBDFLDN/LH, PBDF-LDN/LH, PBDFLDV, PBDF-LDV, PBDFLDV/AP, PBDF-LDV/AP, PBDFLDV/LH, PBDF-LDV/LH, PBDFLEN, PBDF-LEN, PBDFLEN/AP, PBDF-LEN/AP, PBDFLEN/LH, PBDF-LEN/LH, PBDFLEV, PBDF-LEV, PBDFLEV/AP, PBDF-LEV/AP, PBDFLEV/LH, PBDF-LEV/LH, PBDFLGN, PBDF-LGN, PBDFLGN/AP, PBDF-LGN/AP, PBDFLGN/LH, PBDF-LGN/LH, PBDFLGV, PBDF-LGV, PBDFLGV/AP, PBDF-LGV/AP, PBDFLGV/LH, PBDF-LGV/LH, PBDFLKN, PBDF-LKN, PBDFLKN/AP, PBDF-LKN/AP, PBDFLKN/LH, PBDF-LKN/LH, PBDFLKV, PBDF-LKV, PBDFLKV/AP, PBDF-LKV/AP, PBDFLKV/LH, PBDF-LKV/LH, PBDFLNN, PBDF-LNN, PBDFLNN/AP, PBDF-LNN/AP, PBDFLNN/LH, PBDF-LNN/LH, PBDFLNV, PBDF-LNV, PBDFLNV/AP, PBDF-LNV/AP, PBDFLNV/LH, PBDF-LNV/LH, PBDFLPN, PBDF-LPN, PBDFLPN/AP, PBDF-LPN/AP, PBDFLPN/LH, PBDF-LPN/LH, PBDFLPV, PBDF-LPV, PBDFLPV/AP, PBDF-LPV/AP, PBDFLPV/LH, PBDF-LPV/LH, PBDFLQN, PBDF-LQN, PBDFLQN/AP, PBDF-LQN/AP, PBDFLQN/LH, PBDF-LQN/LH, PBDFLQV, PBDF-LQV, PBDFLQV/AP, PBDF-LQV/AP, PBDFLQV/LH, PBDF-LQV/LH, PBDFLWN, PBDF-LWN, PBDFLWN/AP, PBDF-LWN/AP, PBDFLWN/LH, PBDF-LWN/LH, PBDFLWV, PBDF-LWV, PBDFLWV/AP, PBDF-LWV/AP, PBDFLWV/LH, PBDF-LWV/LH, PBDFOAN, PBDF-OAN, PBDFOAV, PBDF-OAV, PBDFOBN, PBDF-OBN, PBDFOBV, PBDF-OBV, PBDFOCN, PBDF-OCN, PBDFOCV, PBDF-OCV, PBDFODN, PBDF-ODN, PBDFODV, PBDF-ODV, PBDFOEN, PBDF-OEN, PBDFOEV, PBDF-OEV, PBDFOGN, PBDF-OGN, PBDFOGV, PBDF-OGV, PBDFOKN, PBDF-OKN, PBDFOKV, PBDF-OKV, PBDFONN, PBDF-ONN, PBDFONV, PBDF-ONV, PBDFOPN, PBDF-OPN, PBDFOPV, PBDF-OPV, PBDFOQN, PBDF-OQN, PBDFOQV, PBDF-OQV, PBDFOWN, PBDF-OWN, PBDFOWV, PBDF-OWV, PBDFWAN, PBDF-WAN, PBDFWAV, PBDF-WAV, PBDFWBN, PBDF-WBN, PBDFWBV, PBDF-WBV, PBDFWCN, PBDF-WCN, PBDFWCV, PBDF-WCV, PBDFWDN, PBDF-WDN, PBDFWDV, PBDF-WDV, PBDFWEN, PBDF-WEN, PBDFWEV, PBDF-WEV, PBDFWGN, PBDF-WGN, PBDFWGV, PBDF-WGV, PBDFWKN, PBDF-WKN, PBDFWKV, PBDF-WKV, PBDFWNN, PBDF-WNN, PBDFWNV, PBDF-WNV, PBDFWPN, PBDF-WPN, PBDFWPV, PBDF-WPV, PBDFWQN, PBDF-WQN, PBDFWQV, PBDF-WQV, PBDFWWN, PBDF-WWN, PBDFWWV, PBDF-WWV