Arch Fender offers higher performance than the conventional V-Type fenders including Super M and Super Arch Fenders. Super Arch Fenders are particularly suitable for small harbor and applications where vessel projections are encountered during berthing. Super arch rubber fenders are tough and reliable, simple and long lasting. Providing trouble-free service for a wide variety of berthing even under the most severe conditions. Super Arch Rubber Fender has the better stability and stronger attachment to the supporting structure than the traditional arch/ v rubber fender.
Super arch rubber fenders also can be bolted with UHMW-PE face pads, combining resilience with low-friction, non-marking properties. This design can reduce the torsion the bottom of the fender dramatically, then prolong the life-span of rubber fender body. The UHMW-PE face pads have various colors, and can be replaced easily.
Arch Fender Arch Fender, Arch Rubber Fender, Arch Marine Fender Qingdao LuHang Marine Airbag and Fender Co., Ltd. , http://www.marinefendersystem.com
Electric 4-way ball valve
Main Parameter
Working Pressure(PN): DIN Pn1.6-6.4MPa,JIS 10K/20K,CL 150/300lb
Body: WCB/CF8/CF8M/CF3/CF3M
Ball: 2Cr13/15CrMo/25Cr2MoV/304/304L/316/316L,float or trunnion
Stem: 2Cr13/15CrMo/25Cr2MoV/304/304L/316/316L
Seal: PTFE/RPTFE/PPL
Port: DN15-DN500,L/L port
Flange: DIN PN16-64,JIS-10K/20K,ANSI-150/300LB,other standard flange available
Standard:Â DIN 2543-2545/DIN 2501,JIS B2073/2083,ASME B16.34
Test: DIN 3230/EN 12266,JIS B2003,API598 Â
Medium: water,oil,steam,liquefied gas
Connection: weld,thread,flange,clamp
Temp.: -40ºC--290ºC
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Technical Parameters
Working environments
Temperature: -30'C~+70'C(can be customized to -45'C~+85'C)
Relatively humidity: 95%(25'C) Pressure: 86kPa~106kPa
Power Supply
Single phase: 220V 50Hz   Three phase:380V 50Hz
Tolerance: Single phase Voltage(-15%/+10%)  Three phase Voltage(±10%) Frequency(±5%), harmonic  content (<5%), Direct Current (±10%)
Insulation resistance
1)Resistance between input terminal and case should be more than 20M .
2)Resistance between input terminal and power supply terminal should be more than 50M . 3)Resistance between power supply terminal and case should be more than 50M .
The motor insulation levelÂ
Level F(Level H is selectable)
Protection level
IP68(underwater 20M\96hours)
Anti-explosion level
EXDÂ IIBT4\EXDÂ IICT4
 On-Off Type
Start frequency
650 times per hour
Designed lifetime
Minimum maintenance-free time:30,000 times
Working form
Short time working type, rated run time will be 15mins(customized to 30mins)
 Regulated Type
Start Frequency
1200 times per hour
Designed lifetime
No less than times
Working form
Intermittent periodic-type, minimum rated load sustained rate is 25%
Basic parameters
Basic error: ≤ ±0.1%
Hysteresis: ≤ 0.5% Dead zone: 0.1%~9.9% continuously adjustable Damping characteristic: undamped
Input and output signal
Analogue input 4-20mADC, input impedance ≤ 250 ;
Analogue output4-20mADC, load resistance ≥ 750 ; Linear error ≤ 0.5%; Supply voltage: 24VDC provided by internal actuator; Actuator with a build-in servo amplifier; Input and output signal channel take optoelectronic  isolationÂ
Passive junction capacity: 250V/5A AC; 30V/5A DC.
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