Hydraulic Counterbalance/Sequence and Check Valve

• Function: Pressure Regulating
• Installation: Tubular
• Drive: Hydraulic
• Type: Pilot-Operated Type
• Pressure: 250bar
• Flow: 50-280L/min
• Model NO.: HCG
• Fluid: Mineral Oil or Phospate Ester
• Temperature Rang: -30-80 Celsius Degree
• Material: Casting iron
• Porting Pattern: ISO 4401-05-04-0-05, Nfpa T3.5.1 R2, ANSI B93-7 D0
• Throttle Control Type: Meter in Control, Meter out Control
• Medium Viscosity Range: 28-500mm2/S
• Weight: 3.7-13.8kg
• Transport Package: Cartons and Pallets
• Specification: 03,06,10
• Trademark: Longli
• Origin: China
• HS Code: 84812010
• Production Capacity: 5000PCS/Month

Product Description

Hydraulic Counterbalance/Sequence and Check Valve

 

They are available with integral Check Valves for use when free reverse flow from secondary port to the primary port is desired. There are various types of valve including Sequence Valve and counterbalance valves, all of which are operated by a pressure rise in the circuit, sensed either internally or remotely.

 

Counterbalance Valve (Internal Pilot-Internal Drain) Used to prevent gravitational falls by generating a pressure on the actuator return side. If primary pressure exceeds the pressure setting, fluid is released to keep the pressure constant.

Sequence and Check Valve(Internal Pilot-External Drain) Used to control the operating sequence of two or more actuators. If primary pressure exceeds the pressure setting, effective fluid is delivered to the secondary side. Reversed flow is free by a check valve.

Sequence and Check Valve (External Pilot-External Drain) Used for the same purpose as for type 2. Operated by external pilot pressure irrespective of primary pressure. Reversed flow is free by a check valve.

Counterbalance Valve(External Pilot-Internal Drain) Used for the same purpose as for type 1. Operated by external pilot pressure irrespective of primary pressure. Reversed flow is free by a check valve.

Model: HCG series
Place of Origin: Shandong,China (Mainland)
Power: Hydraulic
Standard or Nonstandard: Standard
Pressure: Medium Pressure
Structure: Control
Material: Casting
Temperature of Media: Medium Temperature
Media: Oil
Brand Name: Longli
Max. flow rate: 50L/min-280L/min.
Max. work pressure: 250bar

Why Choose Us

1. With 30 years experience of hydraulic components in china.
2. Best manufacturing machinery, quality level, best price, best service.
3. We have very good and comprehensive after-sales service.
4. We have no MOQ for clients and tailor0made to clients request for our huge inventory.

Our Service
Pre-sale service: we provide presales in our first cooperation make clear your situation and give you some advice.
In-sale Service: We will track the production progress and quality, check the exact model and quantity one by one before delivering.
After-sale Service: We will provide a one year free warranty and lifetime maintenance. We will change all questions in 7*24hours if you buy from us.

Packing
Eternal Brand, Neutral or Customer's requires label. 
Neutral carton or same as the Customer's requires, export standard carton.
All cartons should be packed into the pallets more carefully.
All of the productions are inspected carefully one by one by QC before delivery.

Payment term:
T/T 50% as deposit in advance, the balance should be paid before delivery.100% L/C is acceptable. Western Union and PayPal is acceptable.
Transportation: By sea; By air; By truck; By express (DHL,TNT,UPS,FEDEX)
Trading term: FOB,CFR,CIF