NAFFCO NDRF 096 FM Approved Oblique Landing Valve

Overview

The NAFFCO NDRF 096 is an FM Approved oblique landing valve with a 3 inch ASME Class 150 flat-face flanged inlet and a 2½ inch female instantaneous outlet to BS 336, designed to form part of a complete wet riser system for buildings and facilities with more demanding fire risks. NAFFCO states that this FM landing valve range is specifically designed to the FM standard and also conforms to BS 5041 (1987). The body is gunmetal, the maximum working pressure is given as 16 bar, and the datasheet lists a working pressure of 232 psi with a flow of 1100 litres per minute at 7 kg/cm².

The NAFFCO NDRF 096 belongs to a family that also includes the NDRF 096T, NDRT 096, NDRF 113 and NDRT 112, covering oblique and bib nose patterns with flanged or threaded inlets. Seven Star LLC supplies the NAFFCO NDRF 096 and its sister models to contractors and asset owners in Oman, with engineering support in Muscat, for projects where the specification calls for FM approved landing valves rather than BS-only products.

Operating Principle

The landing valve sits at the end of a branch from the wet riser or hydrant main, and the riser pipework is kept charged with water so that it is available immediately. When a fire crew opens the handwheel of the NAFFCO NDRF 096, water flows up through the 3 inch flanged inlet, past the valve seat and out through the angled 2½ inch outlet into the connected hose. The oblique outlet points the hose downwards and away from the wall, which helps crews run out hose quickly from a cabinet or riser cupboard.

As general background, FM Approvals tests fire protection equipment against its own performance standards, and many insurers and international owners in the energy and industrial sectors ask for FM approved components. Because the NAFFCO NDRF 096 is stated to conform to BS 5041 as well, it can serve projects that reference British hydrant standards while also meeting an FM requirement in the owner or insurer specification.

Engineering Design of the NAFFCO NDRF 096

The NAFFCO NDRF 096 has a gunmetal body, which NAFFCO describes as durable and corrosion resistant; the datasheet notes that the range is made from gunmetal or stainless steel. The handwheel at the top of the bonnet operates the valve, and the flange of the valve is attached to the branch of the hydrant post or riser. The blank cap material is offered in ABS plastic or gunmetal, and the standard outlet is a female instantaneous coupling to BS 336, with other couplings available on request.

Across the family the inlet options differ. The NDRF 096 and NDRF 096T both have a 3 inch ASME Class 150 flat-face flanged inlet, but the NDRF 096T has a 2¼ inch male BSP threaded outlet instead of the instantaneous outlet. The NDRT 096 is an oblique valve with a 2½ inch male BSP threaded inlet, while the NDRF 113 and NDRT 112 are bib nose versions with flanged and threaded inlets respectively. Nominal size is DN 2½ inch, and the body test pressure stated is 50 kg/cm².

Key Features

NAFFCO lists the following features for the NAFFCO NDRF 096 FM landing valve range.

• FM Approved, and stated to conform to BS 5041 (1987).
• Body material is gunmetal for durability and corrosion resistance.
• Maximum working pressure of 16 bar is stated in the features list.
• The blank cap is available in ABS plastic or gunmetal.
• The standard outlet is a 2½ inch female instantaneous connection to BS 336, with other couplings on request.
• The NAFFCO NDRF 096 inlet is a 3 inch ASME Class 150 flat-face flange.
• Oblique and bib nose patterns are available with flanged or threaded inlets within the same family.
• Flow of 1100 lpm at 7 kg/cm² is published for the range.

Industrial Applications

FM approved landing valves such as the NAFFCO NDRF 096 are typically chosen for oil and gas facilities, petrochemical plants, power stations, logistics hubs, airports and large industrial buildings, where owners or insurers require FM approved fire protection equipment. In Oman this includes projects in the Sohar industrial port area, the Duqm special economic zone, Salalah free zone and the industrial estates around Muscat, as well as high-value commercial buildings designed to international owner standards.

Seven Star LLC supplies the NAFFCO NDRF 096 and the related NDRF 096T, NDRT 096, NDRF 113 and NDRT 112 models across Oman and the GCC, and helps contractors choose the inlet pattern that matches the riser branch. A typical fire protection scope may also include pipe connections with the Victaulic Style 107N QuickVic coupling, a Kidde WK-890181-000 electric control head on gaseous suppression, and pump sets such as the Grundfos CR vertical multistage pump for jockey or transfer duty.

Technical Specifications

NAFFCO NDRF 096 family data below is taken from the NAFFCO technical datasheet for oblique and bib nose landing valves.

Selection and Installation Notes

The following points are general engineering guidance rather than NAFFCO instructions. Start by confirming whether the project specification requires FM approval, BS 5041 conformity or both, and whether the riser branch is flanged or threaded; this decides between the NDRF and NDRT versions. Flat-face ASME Class 150 flanges should be mated with flat-face flanges and full-face gaskets, so check the branch flange type before ordering the NAFFCO NDRF 096.

Choose the outlet coupling to match the hoses used by the local fire service and the site fire team; the standard BS 336 instantaneous outlet is common in Oman, but the NDRF 096T threaded outlet or other couplings may suit specific facilities. Installation height, cabinet arrangement and testing must follow the approved fire protection design and the authority having jurisdiction.

How to Order

To request a quotation for the NAFFCO NDRF 096 or any model in the family, send Seven Star LLC the model, inlet and outlet requirements, quantity and project details. Our Muscat team can confirm availability and lead time, provide the NAFFCO technical datasheet available for download on this page, and support FM-specified fire protection projects across Oman and the GCC.