Automatic control valves - Pressure reducing - XLC 310/410-ND-H PN 16 | CSA | Philippopoulos s.a.
Automatic control valves - Pressure reducing - XLC 310/410-ND-H PN 16 | CSA | Philippopoulos s.a.

Automatic control valves - Pressure reducing - XLC 310/410-ND-H PN 16 | CSA

CSA XLC 310/410-ND-H PN16

The CSA XLC 310/410-ND-H is an automatic, hydraulically operated globe-type pressure reducing valve designed for water distribution networks. It features dual preset operating setpoints and enables pressure management based on network hydraulic conditions. This configuration is suitable for applications requiring dynamic downstream pressure adjustment to minimize leakage and optimize network operation.

Operating Principle

The valve integrates pressure reduction with a hydraulic switching system between two distinct setpoints. Transition between setpoints is achieved via a dedicated hydraulic control circuit, allowing downstream pressure adaptation according to network demand profiles.

This arrangement is commonly used in areas with significant consumption fluctuations between day and night operation.

Technical Specifications

  • Nominal pressure: PN16
  • Sizes: DN50 to DN400
  • Flanged connections per EN 1092-2
  • Design in accordance with EN 1074
  • Minimum pilot operating pressure: 0.7 bar
  • Operating temperature: up to 70°C
  • Suitable for treated water

Materials of Construction

  • Body and cover: ductile iron GJS 450-10
  • Seat: stainless steel
  • Internal moving parts: stainless steel and ductile iron
  • Hydraulic control circuit: stainless steel
  • Seals: EPDM elastomers
  • Epoxy coating: RAL 5005

Applications

Water Distribution Networks

  • Pressure management zones (DMA)
  • Areas with elevated night-time leakage
  • Networks with high consumption variability

Water Loss Management

  • Night pressure reduction
  • Limiting pipeline stress
  • Control of network burst frequency

Municipal and Regional Networks

  • Pressure sub-zones
  • Networks with telemetry and remote control
  • Non-revenue water (NRW) management installations

Variant Comparison: ND vs ND-H

The ND-H version is used where switching between two pressure setpoints is performed via hydraulic logic, without requiring external electrical equipment or time-based controllers.

FAQ

When is the XLC 310/410-ND-H selected?

When two distinct operating pressures are required and switching is based on network hydraulic criteria.

Typical applications?

Water supply networks aiming to reduce leakage and optimize pressure management during low demand periods.

Key sizing considerations?

  • Maximum and minimum flow rates
  • Upstream and downstream pressures
  • Required day and night pressure levels
  • Cavitation risk
  • Pipe diameter and flow velocity
  • Network control strategy
Standard (Options)
  • DIN
Connection (Options)
  • Flanged
Material (Options)
  • Ductile Cast Iron
Pressure Rating (Options)
  • PN 10
  • PN 16

Datasheet and documents

Description

Pressure reducing hydraulic valve with two set points

The CSA model XLC 310/410-ND-H is a globe pattern hydraulically operated automatic control valve that reduces and stabilizes the downstream pressure to two pre-set and adjustable values, regardless of variation in demands and upstream pressure conditions, usually corresponding to night and day regulation. The valve switches from one pressure to the other according to the flow rate, within an adjustable range.

Product features

• Body and cover in ductile cast iron GJS 450-10.

• Internals in ductile cast iron GJS 450-10 and stainless steel.

• Position indicator in stainless steel.

• Circuitry in stainless steel.

• Unit flow regulator device in stainless steel.

• Seat in stainless steel.

• Painting with fluidized bed technology RAL 5005.

Applications

• A well-planned pressure management program will extend the life of the system increasing safety and reliability. The automatic control valve CSA XLC Model 310/410-ND-H, thanks to high sensitivity pilots, is designed to automatically per form the downstream pressure regulations in two values, both adjustable, where the lower values usually corresponds to night time low consumption requirements.

Standard and connections

• Certified and tested according to EN 1074.

• Flanges size from DN 50 to DN 400 mm, higher on request.

• Flanges standard EN 1092/2, different on request.

Working conditions

• Pressure range: 10-16 bar.

• Minimum working pressure: 0.7 bar acting on the pilot.

• Treated water maximum 70°C, higher temperature on request.

Certifications

Quality e certifications

Quality in its entirety is now an essential requirement for all businesses that aim at gaining and maintaining their position in today's market.

For this reason we have always had the objective of guaranteeing a product managing cycle which, developing a synergy between the various sectors of the company ensures:

  • Quick and precise information.
  • Evaluation of data received and immediate responses.
  • Rigorous control of incoming and outgoing products.

The production cycle, targets a constant improvement of our products, aims at complete customer satisfaction ensures predetermined margins of tolerance establishing production standards so as to guarantee that the semi-finished products reach the next production stage with the required specifications.

All our valves are made of ductile cast iron GJS 450-10 and in absolute compliance with Italian and European standards and are designed to work at a pressure of 25-40 bars. The work is carried out only by means of numerically controlled lathes, mills, horizontal machining units and subsequently examined step-by-step following strict procedures. Internal components of our valves are largely made of stainless steel or other high resistant materials for the maximum prevention of cavitation effects and corrosion.

Painting, pre-treated by sand-blasting grade SA 2,5, is carried out inside a fluidized bed containing epoxy powder, which guarantees maximum surface protection.

All our products are tested under water pressure and certified.

Company policy

CSA deals with the design and production of material for pressure systems for aqueduct, sewage and industrial use and the marketing of all types of valves and solutions for the regulation of pressure systems in the aqueduct, sewerage and industrial sectors.

Mission

Its corporate mission is to be recognized as a structured and leading company for the production of pressure systems for aqueduct, sewage and industrial use.

Our target market consists of around 65% of foreign customers and the remaining 35% of customers in the Italian territory.

The Quality Management System of CSA s.r.l. must guarantee:

  • customer satisfaction through the creation of products according to the required standards and specifications
  • continuous improvement of the effectiveness / efficiency of all the company processes.

For this reason the management of the company together with all the company resources is committed to the continuous improvement of the performance of the company and therefore aimed at managerial, technical and professional growth.

The principles and methodologies of Quality have therefore been an inspiring model in the management and management of the activities of the company, which is constantly engaged in the analysis of the Customer's expectations, to guarantee your maximum satisfaction.

The Quality System is implemented through processes that take place within the company with the collaboration of individual functions and all employees.

Our strengths are:

  1. Technical development of new products suitable for particular applications also at the request of the customer, in addition to a range of standard products on the price list. The development is carried out by our internal Technical Department with attention aimed at complying with sector regulations and national standards;
  2. Assistance to the customer in all phases of order acquisition, order fulfilment and post delivery assistance thanks to commercial and operational personnel able to intervene to solve problems;
  3. Product quality: we guarantee the quality of our products thanks to a careful control of raw materials and selection of qualified suppliers and to the verification of 100% of the products;
  4. Training and periodic training of our staff;
  5. Periodic preventive maintenance of the equipment and calibration of the measuring instruments.

Company Strategies

The company sets the following business strategies for achieving its objectives:

  • Establish contracts with new retailers worldwide to increase the number of customers also in terms of turnover;
  • Development of post-sales assistance service both by telephone and through on-site assistance;
  • Strengthening contacts with the customer through commercial contacts and direct meetings;
  • Careful selection of suppliers through checks on the same and control of the material in acceptance;
  • Warehouse management and production planning in order to meet customer delivery times;
  • Development of new products and obtaining approvals for the marketing of products suitable for contact with water intended for human consumption.

ISO certificates

QNET_9001 Certification    ISO_9001 Certification

Since 1998 all procedures, without exclusion, are certified according to the regulation ISO 9001:2008 by RINA, Registro Italiano Navale.

Standards applied

Quality management

UNI EN ISO 9000:2005

Quality management system - Fundamentals and vocabulary

UNI EN ISO 9001:2015

Quality management system - Requirements

General standards

UNI EN 1563:2012

Founding - Spheroidal graphite cast irons.

UNI EN 545:2010

Ductile iron pipes, fittings, accessories and their joints for water pipelines - Requirements and test methods

UNI 8574-6:1984

Painted products. Test methods. Surface adherence.

UNI EN ISO 2178:1998

Non-magnetic coatings on magnetic substrates - Measurement of coating thickness - Magnetic method

UNI EN 1092-2:1999

Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges

 

Valves

UNI EN 558:2012

Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN and Class designated valves

UNI EN 1074 -1:2001

Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 1: General requirements

UNI EN 12266-1:2012

Industrial valves - Testing of metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements

 

Air valves

UNI EN 1074-4:2002

Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 4: Air valves

 

Control valves

UNI EN 1074-5:2002

Valves for water supply - Fitness for purpose requirements and appropriate verification tests - Part 5: Control valves